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Crystalline‐State Solvent: Metal‐Organic Frameworks as a Platform for Intercepting Aggregation‐Caused Quenching.
- Source :
-
Chinese Journal of Chemistry . Mar2022, Vol. 40 Issue 5, p589-596. 8p. - Publication Year :
- 2022
-
Abstract
- Comprehensive Summary: The sequestration of organic luminescent molecules (OLMs) within cage‐based metal‐organic frameworks (MOFs) as a dispersion platform has been developed to impede aggregation‐caused quenching (ACQ). The homogenous encapsulation of distinct luminescent guests of different sizes and emissive behaviors in the cage structure of a MOF resulted in high fluorescent quantum yields of 44.8% for DAPI@NKU‐110 (DAPI = 4',6‐diamidino‐2‐phenylindole), 65.4% for TPPA@NKU‐110 (TPPA = tris(4‐(pyridin‐4‐ yl)phenyl)amine), 31.3% for R6G@NKU‐110 (R6G = Rhodamine 6G), and 58.3% for PY@NKU‐110 (PY = Pyronin Y), attributable to the confinement effect caused by the rigid cages of NKU‐110. More significantly, a positive correlation of the encapsulated quantity of OLMs with their concentration in the in‐situ solvothermal reaction was unveiled by spectral analysis and utilized to facilely fabricate a white‐light‐emitting crystal material TPPA+R6G@NKU‐110. This material features a large crystal size on the millimeter‐scale, broadband white emission, ideal CIE coordinates (0.33, 0.34), and a high quantum yield (49.1%) when excited at 365 nm. Moreover, such a strategy can be easily generalized to an abundance of other cage‐based MOFs and a plentiful volume of OLMs for the future development of colorful, high performance luminescent materials. [ABSTRACT FROM AUTHOR]
- Subjects :
- *METAL-organic frameworks
*SOLVENTS
Subjects
Details
- Language :
- English
- ISSN :
- 1001604X
- Volume :
- 40
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Chinese Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 154862913
- Full Text :
- https://doi.org/10.1002/cjoc.202100712