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20231226060437.0 |
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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c03299
|2 doi
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|a pubmed24n1178.xml
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|a (DE-627)NLM353626988
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|a (NLM)36856700
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Liu, Qiufen
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Enhanced Luminescence of Dye-Decorated ZIF-8 Composite Films via Controllable D-A Interactions for White Light Emission
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1 |
|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 14.03.2023
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|a Date Revised 14.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Metal-organic frameworks (MOFs) constructed by metal ions/clusters and organic linkers are used to encapsulate fluorescent guest species with aggregation-caused quenching (ACQ) effects to enhance fluorescence properties due to their porous structures and high specific surface areas. However, there would be a problem of matching between MOF pores and guest molecules' sizes. In this paper, amorphous ZIF-8 was modified by carboxyl functional groups (H3BTC-ZIF-8) via introducing the 1,2,4-benzenetricarbonic acid (H3BTC) ligand into the ZIF-8 sol system. Moreover, H3BTC-ZIF-8 was used for the loading of organic fluorescent dyes rhodamine 6G (R6G) and coumarin 151 (C151) to prepare R6G/C151/H3BTC-ZIF-8 composite films. A white-light-emitting composite film (R6G/C151/H3BTC-ZIF-8) with CIE coordinates of (0.323, 0.347) was successfully prepared by compounding fluorescent dyes (R6G and C151) with H3BTC-modified ZIF-8, whose photoluminescence quantum yield (PLQY) can reach 64.0%. It was higher than the PLQY of the composite films prepared by crystalline ZIF-8 (40.2%) or amorphous ZIF-8 without H3BTC (48.0%) compounded with the same concentrations of dyes. The fluorescence enhancement was probably attributed to an increased amount of active sites of H3BTC-modified ZIF-8 interacting with dyes C151 and R6G. This can form hydrogen bonds between H3BTC-ZIF-8 and C151, and weak electron donor-acceptor (D-A) interactions between H3BTC-ZIF-8 and R6G molecules, respectively, thus enhancing the interactions between dyes and ZIF-8 and reducing the ACQ effect existing between dye molecules. Therefore, this strategy could provide an important guidance to develop white-light-emissive materials
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|a Journal Article
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1 |
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|a Chen, Xuelei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Jiahao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Liming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a He, Guanjie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tian, Shouqin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Xiujian
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 39(2023), 10 vom: 14. März, Seite 3656-3667
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:39
|g year:2023
|g number:10
|g day:14
|g month:03
|g pages:3656-3667
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.2c03299
|3 Volltext
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|a AR
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|d 39
|j 2023
|e 10
|b 14
|c 03
|h 3656-3667
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