Tus qauv PAPALARDY rau tib neeg cov ntiv tes tseem tsis hloov pauv ntawm ib tus neeg, thiab tus qauv PAPTALLARY rau txhua tus ntiv tes ntawm tib tus neeg kuj sib txawv. Tus qauv papilla papilla ntawm cov ntiv tes yog roedged thiab faib nrog ntau cov hws hws. Tib neeg lub cev tsis tu ncua cov khoom pub rau dej xws li hws thiab oily tshuaj xws li roj. Cov tshuaj no yuav hloov chaw thiab tso nyiaj rau ntawm qhov khoom thaum lawv nkag mus rau hauv kev sib cuag, tsim cov kev xav ntawm cov khoom. Nws yog qhov meej meej vim tias cov cim tshwj xeeb ntawm tes luam tawm, xws li lawv tus kheej kev lees paub tau dhau los ua tus paub tus kheej txij li thaum tus kheej xyoo 19th.
Ntawm qhov kev ua txhaum scene, tshwj tsis yog peb-seem thiab tiaj tus ntiv tes xim, qhov tshwm sim ntawm cov ntiv tes muaj peev xwm siab tshaj plaws. Muaj peev xwm ntiv tes feem ntau yuav tsum tau ua kom pom kev los ntawm lub cev lossis tshuaj lom neeg. Cov kev tsim kho cov ntiv tes nquag tsuas yog suav nrog kev txhim kho kho qhov muag, hmoov av, thiab kev tsim kho tshuaj lom neeg. Ntawm lawv, hmoov txoj kev loj hlob yog nyiam los ntawm cov nyom undroots vim nws cov haujlwm yooj yim thiab tus nqi qis. Txawm li cas los xij, cov kev txwv ntawm hmoov hmoov raws li cov neeg ua txhaum cai, xws li cov khoom sib txawv ntawm cov ntiv tes thiab cov xim tom qab; Qhov loj, cov duab, viscosity, kev sib xyaw ua ke, thiab kev ua tau zoo ntawm hmoov cuam tshuam rau cov rhiab ntawm hmoov zoo; Kev xaiv cov hmoov nplej yog cov hmoov tsis zoo, tshwj xeeb tshaj yog cov khoom siv ntub dej ntawm cov hmoov, uas txo qis kev xaiv ntawm cov hmoov nplej. Nyob rau hauv xyoo tsis ntev los no, tus neeg ua txhaum cai thiab cov neeg ua haujlwm thev naus laus zis tau tshawb nrhiav cov ntaub ntawv tshiab thiab cov txheej txheem hluavtaws, ntawm covTsis tshua muaj ntiaj tebCov ntaub ntawv luminescent tau nyiam cov xim ntawm kev tshawb fawb kev tshawb fawb thiab thev naus laus zis, muaj kev xaiv siab, muaj kev lom zem, thiab cov tshuaj lom tsawg nyob hauv daim ntawv thov ntiv tes. Lub maj mam sau 4f orbitals ntawm tsis tshua muaj lub ntiaj teb uas tau txais nyiaj tag nrho, thiab 5p txheej electron orbitals ntawm tsis tshua muaj lub ntiaj teb uas tsis tau sau. Lub 4f txheej cov hluav taws xob yog thaiv, muab cov txheej txheem 4F lub cim tshwj xeeb hom kev txav. Yog li ntawd, tsis tshua muaj lub ntiaj teb pom zoo li cov tshuaj lom neeg zoo heev uas tsis muaj kev sib tw ntawm cov kev txwv ntawm cov organic. Ntxiv rau,Tsis tshua muaj ntiaj tebCov ntsiab kuj tseem muaj hluav taws xob zoo nkauj thiab cov khoom sib nqus piv piv rau lwm cov khoom. Qhov tshwj xeeb optical cov yam ntxwv ntawmTsis tshua muaj ntiaj tebions, xws li ntev fluorescence zog, muaj ntau lub zog nqus thiab emission zog bands, tau nyiam kev dav dav hauv kev tshawb fawb txog kev tshawb nrhiav ntiv tes.
Nyob ntawm ntauTsis tshua muaj ntiaj tebHais,huab cuayog cov neeg siv cov khoom siv luminescent. Demarcay, proverner ntawmhuab cuaXyoo 1900, thawj piav piav qhia cov kab ntse hauv kev nqus spectrum ntawm EU3 + hauv kev daws teeb meem. Xyoo 1909, Nroog tau piav qhia txog Cathodolumleyescence ntawmGd2o3: EU3 +. Xyoo 1920, Prandtl thawj luam tawm qhov nqus spectra ntawm EU3 +, lees paub DAG cov mare kev soj ntsuam. Cov khoom nqus ntawm EU3 + yog qhia hauv daim duab 1. EU3 + feem ntau yog nyob rau ntawm C2. EU3 + tuaj yeem ua tiav kev hloov pauv ntawm cov hluav taws xob hauv av hauv lub xeev qis tshaj lub luag haujlwm hauv lub teeb pom kev zoo. Nyob rau hauv qhov kev zam ntawm ultraviolet teeb, EU3 + cov khoom pov thawj muaj zog liab photollexescence. Hom photoluminescence no tsis tsuas yog siv rau EU3 + ions doped hauv crystal substrates lossis tsom iav, tab sis kuj ua rau muaj kev sib xyaw nroghuab cuathiab organic ligands. Cov neeg ligands tuaj yeem ua cov kav hlau txais xov los nqus kom nqus tau LumCence thiab hloov pauv lub zog kom muaj zog ntau dua ntawm EU3 + ions. Qhov tseem ceeb tshaj plaws ntawmhuab cuaPuas yog cov hmoov liab liab fluorescentY2O3: EU3 + (yox) yog ib qho tseem ceeb ntawm cov roj fluorescent teeb. Lub teeb liab kev txaus siab ntawm EU3 + tuaj yeem ua tiav tsis yog los ntawm Ultraviolet teeb, tab sis kuj yog los ntawm hluav taws xob, sib dhos lossis kev sib txhuam lossis kev siv tshuab. Vim nws cov nplua nuj luminis force, nws yog cov kev sojntsuam biological nyob rau hauv cov teb ntawm biomedical lossis biological sciences. Nyob rau hauv xyoo tsis ntev los no, nws kuj tau aroused cov kev tshawb fawb txog kev tshawb fawb thiab kev xaiv zoo kom txhim kho cov ntiv tes ntawm cov kev sib txawv, rhiab, thiab kev xaiv ntawm cov ntiv tes ntawm cov ntiv tes ntawm cov ntiv tes.
Daim duab 1 EU3 + nqus spectregram
1, luminescence lub ntsiab lus ntawmTsis tshua muaj ntiaj teb Europiumnyuaj
Cov av hauv av thiab lub xeev zoo siab hluav taws xob teeb tsa ntawmhuab cuaions muaj ob hom 4FN. Vim tias cov nyhuv zoo heev ntawm S thiab D Orbitals nyob ib ncig ntawmhuab cuaions rau 4f orbitals, FF hloov ntawmhuab cuaions ua kom pom cov kab ntse ntse thiab cov fluorescence ntev. Txawm li cas los xij, vim qhov qis photoluminescence efficiencyhuab cuaions txhawm rau txhim kho coeffeticient ntawm cov ultraviolet thiab pom lub teeb thaj chaw. Fluorescence emitted los ntawmhuab cuaCov nyom tsis yog tsuas yog cov kev sib txawv ntawm kev siv cov fluoricence ntau, tab sis kuj tuaj yeem hloov kho fluoricescence siab ntawm cov organic sib txuas ntawm cov cheeb tsam organic nyob rau hauv cov cheeb tsam organic nyob rau hauv cov cheeb tsam organic nyob rau hauv cov cheeb tsam organic nyob rau hauv ultraviolet thiab pom lub teeb thaj chaw. Lub zog ua kom muaj zog xav tau rauhuab cuaIon Photoluminescence yog qhov siab qhov tsis muaj fluoricescence efficiency. Muaj ob lub ntsiab luminescence cov ntsiab lus ntawmTsis tshua muaj ntiaj teb Europiumcomplexes: ib qho yog photoluminescence, uas yuav tsum tau ligand ntawmhuab cuanyuaj; Lwm qhov yog tias cov kav hlau txais xov cov nyhuv tuaj yeem txhim kho cov rhiab ntawmhuab cuaIon LumCence.
Tom qab tau zoo siab los ntawm sab nraud ultraviolet lossis pom lub teeb, lub organic lingand nyob rau hauvTsis tshua muaj ntiaj tebCov kev hloov pauv ntau los ntawm cov av hauv lub xeev S0 rau cov nkauj zoo siab ntawm lub xeev S1. Cov hluav taws xob zoo siab hauv lub xeev tsis ruaj khov thiab rov qab mus rau hauv qhov hluav taws xob tseem ceeb rau nws lub peev xwm ua kom muaj kev lom zem rau lub xeev Ligand, lossis T2 los ntawm tsis yog txhais tau tias; Triple zoo siab rau lub xeev tawm lub zog los ntawm hluav taws xob los tsim cov ligand phosphorescence, lossis hloov lub zog rauHlau Eurabions los ntawm tsis radiative intramolecular hluav taws xob hloov; Tom qab tau zoo siab, cov Europium Ive Evition los ntawm hauv av lub xeev mus rau lub xeev zoo siab, thiabhuab cuaions nyob rau hauv qhov kev hloov siab lub xeev zoo siab, thaum kawg tseem rov qab mus rau hauv av lub xeev, tso lub zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog thiab tsim hluav taws xob. Yog li ntawd, los ntawm kev qhia txog cov organic tsim nyog los cuam tshuam nrogTsis tshua muaj ntiaj tebions thiab sensiticize nruab nrab ntawm cov hlau hluav taws xob hauv kev hloov pauv tsis pub dhau cov lwg me me, muaj rau lub zog ua kom sab nraud tuaj yeem txo. Qhov tshwm sim no yog lub npe hu ua tus kav hlau txais xov ntawm Ligands. Lub zog txheej txheem ntawm lub zog hloov hauv EU3 + cov nyom tau qhia hauv daim duab 2.
Nyob rau hauv tus txheej txheem ntawm lub zog hloov los ntawm triplet zoo siab lub xeev rau lub xeev ligand triplet zoo tshaj lossis xwm txheej nrog lub zog ntawm EU3 + lub xeev zoo siab. Tab sis thaum lub zog triplet ntawm Ligand theem ntawm Ligand qib siab tshaj qhov qis tshaj lub xeev muaj zog ntawm EU3 +, lub zog hloov efficievicior yuav kuj tau txo qis heev. Thaum qhov sib txawv ntawm lub xeev triplet thiab qis tshaj plaws lub xeev EU3 + yog me me, lub fluorescence muaj zog ntawm kev coj ua ntawm lub xeev lingand. β- diketone complexes muaj qhov zoo ntawm uv nqus coefficient, muaj peev xwm sib zog ua kom muaj zog, hloov hluav taws xob zoo liTsis tshua muaj ntiaj tebs, thiab muaj peev xwm muaj nyob rau hauv ob daim ntawv thiab kua ua kua, ua rau lawv cov neeg siv ntau tshaj plaws hauv tebchawsTsis tshua muaj ntiaj tebnyuaj.
Daim Duab 2 Daim Duab Hluav Taws Xob Hluav Taws Xob ntawm Lub Zog Hloov Hauv EU3 + Complex
2.Ynthesis txoj kev ntawmTsis tshua muaj ntiaj teb EuropiumNyuaj
2.1 Kev Kub Siab Rau Cov Hluav Taws Xob-State Synthesis Txoj Kev
Lub siab-kub ua rau txoj kev muaj zog yog ib txoj kev siv ib txwm muaj rau kev npajTsis tshua muaj ntiaj tebLuminescent cov ntaub ntawv, thiab nws tseem dav siv hauv kev lag luam ntau lawm. Qhov kev kub siab-lub xeev hluavtaws hluav taws xob hluav taws xob yog cov tshuaj tiv thaiv kev cuam tshuam hauv cov pej xeem kub nyob rau hauv cov pej xeem siab los ntawm kev thauj cov atoms lossis ions. Lub siab-kub khov kho qauv-theem yog siv los npajTsis tshua muaj ntiaj tebnyuaj. Firstly, cov reactants tau sib xyaw ua feem ua feem, thiab tus nqi tsim nyog tau ntxiv rau ib lub cap rau kom ntseeg tau cov kev sib xyaw kom huv si kom ntseeg tau tias kev sib xyaw ua ke. Tom qab, cov av reactants yog muab tso rau hauv cov cua sov siab rau kev kho kom muaj. Thaum lub sij hawm ua cov txheej txheem kev hloov pauv, oxidation, txo qis, lossis cov roj hauv plab tuaj yeem ua tiav raws li qhov xav tau ntawm cov txheej txheem sim. Tom qab qhov kev kub ntxhov, ib qho kev ua kom muaj cov qauv siv lead ua, thiab tus activator tsis tshua muaj neeg muaj ntxiv rau nws los ua lub chaw luminescence. Lub calcined complex xav tau yauv mus txias, yaug, ziab, rov qab sib tsoo, thiab tshuaj ntsuam ntawm chav sov kom tau cov khoom. Feem ntau, ntau ntau txoj kev sib tsoo thiab cov txheej txheem calcination yog yuav tsum tau ua. Ntau sib tsoo tuaj yeem nrawm cov tshuaj tiv thaiv ceev thiab ua rau cov tshuaj tiv thaiv ua tiav. Qhov no vim tias kev sib tsoo cov txheej txheem nce thaj tsam tiv tauj ntawm cov reatants, ua kom nrawm dua ntawm reactants thiab molecules hauv cov reactants, yog li kev txhim kho cov tshuaj tiv thaiv kev ua tau zoo. Txawm li cas los xij, cov sij hawm laij tawm lub sijhawm sib txawv thiab cov kub yuav muaj kev cuam tshuam rau cov qauv ntawm cov siv lead ua matrix tsim.
Lub zog kub-lub xeev muaj qhov zoo ntawm cov txheej txheem yooj yim, tus nqi qis, thiab siv tshuab luv luv, ua rau nws npaj kev npaj ua ntej. Txawm li cas los xij, lub ntsiab tsis zoo ntawm cov txheej txheem kub-lub xeev yog: Ua ntej, cov khoom siv yuav tsum muaj zog, thiab yog qhov nyuaj los tswj lub tshuab morphotry. Cov khoom morphology tsis ncaj, thiab txawm tias ua rau lub xeev muaj leustal ua kom puas, cuam tshuam rau kev ua kom muaj kev ua tau zoo. Thib ob, kev sib tsoo tsis txaus ua rau nws nyuaj rau cov reactants los sib tov tusyees, thiab cov lus siv lead ua kuj loj. Vim los ntawm phau ntawv lossis tshuab sib tsoo, impurities yog inevitably sib xyaw kom muaj kev sib xyaw ntawm lumicescence, ua rau cov khoom siv qis. Qhov teeb meem thib peb yog qhov tsis ncaj rau txheej txheej thiab qhov ntom ntom ntom ntom thaum lub sijhawm ua ntawv thov. Lai li al. synthesized ib series ntawm SR5 (PO4) 3Cl ib-ntu polychromatic fluorescent hmoov detorers doped nrog EU3 + thiab TB3 Kev Siv Hluav Taws Kub Kub-Lub Xeev. Nyob rau hauv ze-ultraviolet expitation, fluorescent hmoov tuaj yeem qhib qhov tsis xws li Doping cov xim thiab kub ntsig txog xim kub nyob rau hauv lub teeb dawb-emitting-emitting driodes dawb. Kev noj hluav taws xob siab yog qhov teeb meem tseem ceeb hauv synthesis ntawm borophosphaphaphaphat fluorescent hmoov los ntawm kev kub-lub xeev txoj kev. Tam sim no, ntau thiab ntau dua cov kws tshawb fawb tau cog lus los tsim cov matrices ntau los daws cov teeb meem kev siv hluav taws xob siab ntawm cov txheej txheem kub. Xyoo 2015, Humegawa li al. Ua tiav qhov tsawg-kub khov-lub xeev npaj ntawm li2nabp2o8 (lnbp) theem siv cov pawg P1 ntawm lub sijhawm Tricylic thawj zaug. Hauv 2020, ZHU li al. Tshaj tawm qhov tsawg-kub ua rau txoj kev tshiab li2nabp2o8: EU3 phosphor, u +ing energy energy energy energy energy energy energy and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and hab
2.2 co txoj kev nag lossis daus
Co cov txheej txheem nag lossis daus kuj yog cov siv cov khoom siv mos muag "cov qauv siv hluav taws xob rau kev npaj inorganic rare lub ntiaj teb cov khoom. Co cov txheej txheem nag lossis daus cuam tshuam nrog cov neeg siv tshuaj ntsuab, thiab lwm yam, thiab cov khoom siv tshuaj txhuam hniav, thiab cov khoom siv tshuaj txhuam hniav, thiab siv cov khoom siv tshuaj txhuam hniav, Qhov zoo ntawm cov txheej txheem nag los yog kev ua haujlwm yooj yim, kev noj haus luv, kev noj haus qis, thiab cov khoom muaj txiaj ntsig zoo. Nws cov txiaj ntsig zoo tshaj plaws yog tias nws qhov loj me me me yuav ncaj qha rau nanocrystals. Qhov teeb meem ntawm co dej nag los yog: Ua ntej, cov khoom lag luam Prenomenon tau hnyav, uas cuam tshuam rau cov khoom siv luminescent ntawm cov khoom siv fluorescent; Thib ob, cov duab ntawm cov khoom yog tsis meej thiab nyuaj rau kev tswj hwm; Thib peb, muaj qee yam kev cai rau xaiv cov ntaub ntawv raw, thiab cov nag lossis nag lossis nag li li cas, uas tsis haum rau daim ntawv thov ntawm ntau lub tshuab sib xyaw. K. Petcharoen li al. synthesized kheej kheej coerical magnetite siv ammonium hydroxide ua ib tug precipitant thiab tshuaj lom neeg cocipitation txoj kev. Acetic acid thiab oleic acid tau qhia raws li cov neeg nyob ze rau lub sijhawm thaum pib cov nanopartite nanoparticization tau raug tswj hwm hauv thaj tsam 1-40n los ntawm kev hloov ntsuas kub. Lub zoo dispersed magnetite nanoparticles nyob rau hauv aqueous kev daws teeb meem tau los ntawm kev hloov pauv saum npoo, txhim kho lub agglomeration prenomenon ntawm cov me ntsis txoj kev. Keee li al. Piv cov kev cuam tshuam ntawm cov qauv ntawm hydrothermal thiab co los nag lossis daus, cov qauv, thiab qhov loj me ntawm EU-CSH. Lawv tau taw qhia tias cov qauv hydrothericts tsim cov nanoparticles, thaum co co los nag lossis daus cov lus prismatic hais. Piv nrog cov qauv dej nag los daus, cov khoom siv hydrothermal siab dua crystallinity thiab zoo dua posp crystallinity hauv kev npaj ntawm EU-CHS hmoov. JK HAN LI AL AL. Tsim ib hom kev ua dab tsi los nag lossis cov tshuaj uas tsis muaj aqueous nyob ze thiab QU2 Phosyiciency nyob ze spherical nano lossis submicron loj me. DMF tuaj yeem txo cov tshuaj tiv thaiv polymerization thiab ua rau cov kev hloov pauv ntawm lub sijhawm nag lossis daus, pab tiv thaiv kom tsis txhob muaj kev sib cais particle.
2.3 hydrushermal / Kuab thermal synthesis txoj kev
Lub hydothermal txoj kev pib hauv nruab nrab-xyoo pua puv 19 thaum geologist simulated lub mineralization. Thaum ntxov xyoo pua 20, qhov kev tshawb xav tau ntev thiab yog tam sim no yog ib qho ntawm cov lus qhia kev pheej hmoo tshaj plaws. Cov txheej txheem ntawm hydro yog cov dej uas muaj cov roj ntsha uas muaj qhov kub thiab txias dua diffuse mus rau qhov kub tsawg rau recrystallization. Qhov kub thiab txias, lub sijhawm tiv thaiv, lub siab, thiab cov txheej txheem sib txawv, cov qauv, thiab kev loj hlob mus rau cov degrees sib txawv. Qhov nce hauv qhov kub thiab txias tsis tsuas yog ua kom nrawm dua ntawm cov ntaub ntawv raw, tab sis kuj tseem ua tau zoo kev sib tsoo ntawm cov lwg me me los txhawb kev ua lead ua. Cov kev loj hlob sib txawv ntawm txhua lub crystal hauv phua yog qhov tseem ceeb rau cov ntsiab lus crystal, qhov loj me, thiab morphology. Qhov ntev ntawm cov tshuaj tiv thaiv lub sijhawm kuj tseem cuam tshuam cov siv lead ua kev loj hlob, thiab lub sijhawm ntev dua, qhov ntau dua nws yog rau kev loj hlob crystal.
Qhov zoo ntawm hydrothermal txoj kev yog feem ntau yog manifested hauv: Ua tuab, loj party faib, loj tawm los, thiab ntau yam khoom morphology; Qhov thib ob yog tias cov txheej txheem kev ua haujlwm yog qhov yooj yim, tus nqi yog tsawg, thiab lub zog siv zog yog tsawg. Feem ntau ntawm cov kev tawm tsam yog nqa tawm hauv nruab nrab rau qhov chaw kub tsawg, thiab cov tshuaj tiv thaiv yog yooj yim los tswj. Daim ntawv thov ntau yog dav thiab tuaj yeem ua tau raws li kev yuav tsum tau ua ntawm ntau hom khoom; Thib peb, lub siab ntawm ib puag ncig pa paug yog tsawg thiab nws yog tus phooj ywg rau kev noj qab haus huv ntawm cov neeg ua haujlwm. Nws cov teeb meem tseem ceeb yog tias cov tshuaj tiv thaiv ua ntej yog yooj yim cuam tshuam los ntawm ib puag ncig Ph, thiab lub sijhawm, thiab cov khoom muaj cov ntsiab lus oxygen tsawg.
Cov txheej txheem qhib cov txheej txheem siv cov kuab tshuaj los ntawm cov tshuaj tiv thaiv nruab nrab, txuas ntxiv mus rau cov hau kev siv hluav taws xob. Vim tias qhov sib txawv tseem ceeb hauv cov tshuaj thiab cov tshuaj ntawm cov kuab tshuaj yeeb yaj kiab thiab dej, cov qauv, thiab qhov loj me ntawm cov khoom muaj ntau haiv neeg. NallAppan li al. synthesized moox muaju nrog cov morphiscologies sib txawv los ntawm daim ntawv qhia txog lub sijhawm ntawm hydrousermal siv sodium dialkyl sulfate raws li tus neeg noj zaub mov crystal. Dianwen HU li al. synthesized composite cov ntaub ntawv raws li polyoxymolybdenum cobalt (copma) thiab uio-67 lossis muaj cov kab ke los ntawm kev txhim kho synthesis.
2.4 Sol gel txoj kev
Sol gel txoj kev yog ib qho tshuaj lom neeg los npaj cov ntaub ntawv inorganic ua haujlwm, uas yog dav siv nyob rau hauv kev npaj ntawm hlau nanomaterials. Xyoo 1846, Elbelien thawj zaug siv cov qauv no los npaj Sio2, tab sis nws siv tsis tau paub tab. Cov txheej txheem npaj yog feem ntau yog ntxiv rau kev tsis tshua muaj lub ntiaj teb ion ua kom cov tshuaj tiv thaiv kev ua kom tau ua kom cov tshuaj pleev ua kom cov kua muag tau txais cov khoom lag luam kom sov. Cov phosphor tsim los ntawm Sol gel txoj kev muaj zoo morphology thiab cov khoom muaj cov qauv zoo me me, tab sis nws txoj kev vam meej xav tau kev txhim kho. Txoj kev npaj npaj ntawm Sol-gel txoj kev yooj yim thiab yooj yim rau kev ua haujlwm kub yog qhov tsawg, tab sis lub sijhawm ntev, thiab tus nqi ntawm txhua txoj kev kho tau txwv. Gaponenko li al. Npaj amorphous batio3 / sudio2 multitrayer qauv los ntawm centrifugation thiab kev kho cua sov ntsuas nrog cov lus qhia ua kom zoo nkauj ntawm pob khoom siv tshiab ntawm kev nce siab. Xyoo 2007, liu l'S neeg soj ntsuam ua tiav cov fluorescent zoo thiab lub teeb ruaj khov EUL hauv silica raws li nanocomposites thiab doped qhuav gel siv cov txheej txheem sol gel. Hauv kev sib txuas ntawm cov derivatives sib txawv ntawm lub ntiaj teb tsis tshua muaj txiaj ntsig zoo muab cov roj uas zoo tshaj plaws muab cov roj uas muaj zog zoo tshaj plaws ntawm EU3 +.
2.5 microwave synthesis txoj kev
Txoj kev siv hluav taws xob microwave yog cov tshuaj ntsuab tshiab thiab muaj kuab lom-qhia txog kev siv hluav taws xob zoo rau cov khoom siv Nanomaterial Nalthesis, qhia kev txhim kho kev txhim kho zoo. Microwave yog hluav taws xob hluav taws xob nrog nthwv dej ntawm 1nn thiab 1m. Microwave txoj kev yog cov txheej txheem nyob rau hauv uas microscopic cov lus hauv cov khoom pib polarization nyob rau hauv tus ntawm sab nraud Electromagnet lub zog. Raws li cov kev taw qhia ntawm microwave hluav taws xob hloov, cov lus tsa suab thiab npaj ntawm dipoles hloov tsis tu ncua. Lub hysteresis teb cov dipoles, nrog rau kev hloov pauv ntawm lawv tus kheej thermal zog yam tsis muaj kev sib tsoo, kev sib txhuam, ua kom tau cov nyhuv cua sov. Vim yog qhov tseeb tias cua sov microwave tuaj yeem uniformly tag nrho cov tshuaj tiv thaiv kev kawm nrawm, yog li kev txhawb nqa cov khoom siv nrawm nrawm, yog theem me me thiab theem siab purity. Txawm li cas los xij, feem ntau cov ntawv ceeb toom tam sim no siv microwave nqus cov hmoov zoo li cov hmoov carbon thiab Fe3O4, thiab MNO2 kom qhia tawm cov tshuaj tiv thaiv cua sov rau cov tshuaj tiv thaiv. Cov tshuaj uas tau yooj yim nqus los ntawm microwaves thiab tuaj yeem qhib cov reactants lawv tus kheej xav tau kev tshawb nrhiav ntxiv. Line li al. Ua ke ntawm co co daus nag lossis daus nrog lub microwave txoj kev mus squinesize ntshiab spintel limn2o4 nrog ntxig morphology thiab cov khoom zoo.
2.6 kev sib txuas
Txoj kev sib txuas ua ke yog raws li kev ua haujlwm cua sov, uas siv cov khoom siv hluav taws xob ua ke los tsim cov khoom lag luam tom qab daws tau cov tshuaj txhuam hniav. Cov roj tsim los ntawm kev sib txuas ntawm cov organic muaj teeb meem yuav ua kom qeeb qhov tshwm sim qeeb ntawm agglomeration. Piv nrog rau cov txheej txheem cua sov-xeev, nws tau txo cov kev siv hluav taws xob thiab haum rau cov khoom lag luam nrog cov tshuaj tiv thaiv kub tsawg. Txawm li cas los xij, cov tshuaj tiv thaiv kev xav tau ntxiv rau ntawm cov organic sib txuas, uas nce tus nqi. Hom no muaj peev xwm ua tau me me thiab tsis haum rau kev tsim khoom lag luam. Cov khoom lag luam tsim los ntawm cov qauv sib txuas muaj cov txheej txheem me me thiab muaj cov kev ua muaju tsis tiav, uas cuam tshuam rau kev ua tiav Luminescence, uas cuam tshuam rau cov kev ua tiav Luminescence, uas cuam tshuam rau cov khoom siv luminescence, uas cuam tshuam rau kev ua kom tiav ntawm cov muaju. Anning li al. Siv La2O3, B2O3, thiab mg thaum pib cov ntaub ntawv thiab siv ntsev pab cuam tshuam los ntawm cov khw Lab6 los tsim Laudy6 hmoov hauv lub sijhawm luv luv ntawm lub sijhawm.
3. Kev thov ntawmTsis tshua muaj ntiaj teb EuropiumKev tsim kho cov ntiv tes
Hmoov zaub qauv yog ib qho ntawm cov txheej txheem qub tshaj plaws thiab cov phooj ywg ib txwm muaj. Tam sim no, cov hmoov uas ua rau cov ntiv tes sib xyaw tuaj yeem muab faib ua peb pawg, xws li hmoov sib nqus, hmoov thiab pleev hmoov carbon; Hmoov kav hlau, xws li kub hmoov,Nyiaj Hmoov, thiab lwm cov hmoov hlau nrog tus qauv network; Fluorescent hmoov. Txawm li cas los xij, hmoov nplej feem ntau muaj cov teeb meem zoo hauv kev nthuav tawm cov ntiv tes lossis cov ntiv tes qub ntawm cov txiaj ntsig zoo ntawm kev noj qab haus huv ntawm cov neeg siv kev noj qab haus huv. Nyob rau hauv xyoo tsis ntev los no, cov neeg ua txhaum cai thiab cov neeg ua haujlwm thev naus laus zis tau nce ntxiv cov ntaub ntawv ntawm nano fluorescent cov khoom siv. Vim yog lub cim lumination ntawm EU3 + thiab cov ntawv thov thoob plaws ntawmTsis tshua muaj ntiaj tebTshuaj,Tsis tshua muaj ntiaj teb EuropiumCov complexes tsis yog tsuas yog ua kev tshawb fawb hotspot hauv thaj teb kev tshawb fawb, tab sis kuj tseem muab cov tswv yim tshawb fawb dav dav rau cov ntiv tes. Txawm li cas los xij, EU3 + hauv cov kua lossis cov khib nyiab muaj kev ua haujlwm tsis zoo thiab yuav tsum tau ua ke nrog cov teeb pom kev zoo thiab ua kom muaj zog thiab ntau cov fluorescence muaj zog. Tam sim no, cov neeg siv ligand feem ntau suav nrog cov neeg siv ntsev, carboxylic acids, orgrocolecles macrocycular, thiab lwm yam ntawm kev tshawb nrhiav thiab kev thov ntawmTsis tshua muaj ntiaj teb Europiumcomplexes, nws tau pom tias nyob rau hauv cov puag ncig vaum, qhov kev co ntawm kev ua kom sib haum H2O lwg hauvhuab cuaCov complexes tuaj yeem ua rau luminence quenching. Yog li ntawd, txhawm rau ua tiav kev xaiv zoo dua thiab muaj zog nyob rau hauv cov ntiv tes tso tawm, kev siv zog yuav tsum tau kawm kom txhim kho cov thermal thiab tshuab ruaj khov ntawmhuab cuanyuaj.
Xyoo 2007, liu l yog cov pab pawg tshawb fawb yog cov tho kev ntawm kev qhiahuab cuaCov khoom sib txuas rau hauv thaj teb ntawm cov ntaus nkauj tus ncaws pob thawj zaug hauv tsev thiab txawv teb chaws. Qhov fluorescent siab thiab lub teeb ruaj khov EU3 + Hlau ion / sensitizer complexes tau raug siv rau cov khoom siv cov khoom siv kub, suav nrog cov ntawv kub thiab xim ntsuab, nplooj ntsuab. Kev tshawb fawb tau qhia txog kev npaj npaj npaj, UV / VI ceev, fluorcescent cim daim ntawv, thiab cov ntiv tes sib xyaw ua ke EU3 + / Op / Teos nanocomposites.
Hauv 2014, Seung Jin RYU li al. thawj tsim ib qho EU3 + complex ([Eucl2 (Phen) 2 (H2O) 2] ClashionEuropium chloride(Eucl3P3o) thiab 1-10 phenylroline (Phen). Los ntawm ion pauv kev hloov pauv ntawm interlayer sodium ions thiabhuab cuaPiv txwv (EU (Phen) 2) 3 + - Phen) 2) 3 + - Ntuj Montmorillonite) tau txais. Nyob rau hauv kev zoo siab ntawm UV teeb ntawm lub wavelength ntawm 312NM, ob lub compility, tab sis kuj tseem muaj cov kab mob siab xws li ast fitrialone, [EU (Phen) 2] 3 + - Phenhium YauPstone tau zoo dua Luminence kev siv dua [EU (Phen) 2] 3 + - Montmorillonite, thiab cov ntiv tes qhia kev sib txawv thiab muaj zog sib piv nrog rau tom qab. Xyoo 2016, V Sharma li al. synthesized strontium aluminate (srtral2O4: EU2 +, DY3 +) Nano fluorescent hmoov siv kev sib txuas. Cov hmoov yog haum rau cov zaub ntawm cov tshiab thiab qub ntiv tes rau permeable thiab cov ntawv tsis zoo xws li cov ntawv ci dog dig, thiab kho qhov muag. Nws tsis tsuas yog ua kom cov teeb tsa siab zoo siab thiab xaiv tau, tab sis kuj muaj kev muaj zog thiab ntev-tom qab tom qab tus yam ntxwv. Hauv 2018, Wang li al. Npaj? Nanoparticles (ESM-CAS-np) doped nroghuab cua, samar, thiab manganese nrog lub plawv nruab nrab ntawm 30nm. Cov nanoparticles tau encapsulated nrog amphiphilic nigands, tso cai rau lawv kom ua tsis tau zoo hauv dej yam tsis poob lawv cov fluorescence zoo; Co kev hloov kho ntawm ESM-CAS-NPL nto nrog 1-mercaplecthiol thiab 11-mercaplecany daws tau cov tshuaj fluchescelually los ntawm particle hydrolysis nyob rau hauv nano fluorescent hmoov. Qhov no fluorescent hmoov tsis tsuas yog ua rau cov ntiv tes uas muaj peev xwm ua kom pom cov khoom sib dhos kom zoo nkauj, tab sis kuj tseem muaj cov cuab yeej tshawb nrhiav kim tshaj tawm cov khoom siv ternaryhuab cuaCov nyom [EU (M-MA) 3 (O-Phen)] siv ortho, Metho, thiab P-Ligand thiab ortho penanthroline li qhov thib ob li nag lossis daus. Nyob rau hauv 245nm ultraviolet teeb Iradiation, muaj peev xwm ntiv tes ntawm cov khoom xws li plastics thiab cov cim lag luam tuaj yeem pom kom meej meej. Xyoo 2019, Sung Jung Jun Park et al. Synthesized YBO3: LN3 + (Ln = TB) phospors los ntawm kev kho kom tau txais kev kho kom zoo nkauj tom qab kev cuam tshuam. Hauv 2020, prabakaran li al. developed a fluorescent Na [Eu (5,50 DMBP) (phen) 3] · Cl3/D-Dextrose composite, using EuCl3 · 6H20 as the precursor. Na [EU (5,5 '- DMBP) (Phen) tau siv los ua cov qauv phen thiab 5,5' - dmbp) (phen) (phen) los ntawm kev kos duab txoj kev. 3 / d-dextrose complex. Los ntawm kev sim, cov tshuaj sib haum yuav pom kom meej meej cov ntiv tes ntawm cov khoom siv yas, khob dej qab zib thiab ntau dua ruaj khov ua fluorescence. Xyoo 2021, Dan Zhang li Al. ntse tsim thiab synthesized ib tshiab hexanuclear EU3 + complex Eu6 (PPA) 18Ctp-TPYFAST POB ZEB (<50 ℃) thiab tuaj yeem siv rau ntiv tes zaub. Txawm li cas los xij, xav tau kev sim ntxiv los txiav txim siab nws hom tsiaj uas tsim nyog. Hauv 2022, L Brini li al. Ua tiav cov hluav taws xob EU: Y2SN2O7 Fluorescent hmoov los ntawm cov khoom siv los nag muag, uas tuaj yeem tsim cov khoom siv dag zog ntawm ntoo thiab cov khoom siv liab kev zam thiab ci ntsuab fluorescence nyob rau hauv 980nm ze-infrared expitation, ua tiav cov khoom siv ntiv taw ntawm tus qhua. Lub peev xwm tus ntiv tes ntawm cov khoom xws li cov vuas luaj, cov ntaub ntawv yas, thiab cov duab sau ntawv yas, sib piv rau cov kev cuam tshuam zoo siab rau kev cuam tshuam yav dhau los.
4 kev saib xyuas
Nyob rau hauv xyoo tas los, kev tshawb fawb txogTsis tshua muaj ntiaj teb EuropiumCov complexes tau nyiam ntau xim, ua tsaug rau lawv cov khoom siv hluav taws xob zoo heev, muaj txiaj ntsig zoo fluorime, muaj lub zog ua fluorescent, ntau emission zog thiab emission gaps, thiab nqaim nqus peaks. Nrog rau qhov tob tob ntawm cov ntaub ntawv tsis tshua muaj cov ntaub ntawv hauv av, ua liaj ua teb, kev ua liaj ua teb, kev ua liaj ua teb, kev ua liaj ua teb, cov ntaub ntawv hluav taws xob, kev ua liaj ua teb thiab lwm yam. Lub zog kho qhov muag ntawmhuab cuaCov complexes tau zoo heev, thiab lawv daim ntawv thov tau txais maj mam nthuav. Txawm li cas los xij, lawv tsis muaj qhov thaiv hluav taws xob, cov khoom siv kho tshuab, thiab cov txheej txheem yuav txwv lawv cov ntawv thov. Los ntawm cov kev tshawb fawb tam sim no, daim ntawv thov kev tshawb fawb ntawm kho qhov muag ntawmhuab cuacomplexes nyob rau hauv lub tshav teb kev tshawb fawb yuav tsum ua kom pom tseeb rau kev txhim kho cov khoom kho kho ntawmhuab cuacomplexes thiab daws cov teeb meem ntawm fluorescent tog yog nquag mus rau aggregation, tswj kev ruaj ntseg thiab luminence efficient ntawmhuab cuacov kev daws teeb meem hauv cov kua aqueous. Tam sim no, kev nce qib ntawm cov zej zog thiab kev tshawb fawb thiab thev naus laus zis tau tso rau kev npaj cov khoom tshiab. Thaum lub rooj sib tham txog daim ntawv thov kev xav tau, nws yuav tsum kuj ua raws li cov yam ntxwv ntawm diversified tsim thiab tus nqi qis. Yog li ntawd, kev tshawb fawb ntxiv rauhuab cuaCov nyom yog qhov tseem ceeb rau kev txhim kho ntawm Tuam Tshoj tus nplua nuj feem ntau cov peev txheej hauv ntiaj teb thiab kev txhim kho kev ua txhaum kev tshawb fawb thiab thev naus laus zis.
Lub Sijhawm Post: Nov-01-2023