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Loading Dyes into Chiral Cd/Zn-Metal–Organic Frameworks for Efficient Full-Color Circularly Polarized Luminescence
被引:0
|作者:
Yin, Hua-Qing
[1
]
Chen, Jia
[1
]
Xue, Yu-Wei
[1
]
Ren, Jing
[1
]
Wang, Xin-Hui
[1
]
Fan, Heng-Rui
[1
]
Wei, Shu-Yan
[1
]
Sun, Bo
[1
]
Zhang, Zhi-Ming
[1
]
机构:
[1] Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin,300384, China
关键词:
Host-guest chemistry of chiral metal-organic frameworks (MOFs) has endowed them with circularly polarized luminescence (CPL), it is still limited for MOFs to systematically tune full-color CPL emissions and sizes. This work directionally assembles the chiral ligands, metal sites and organic dyes to prepare a series of crystalline enantiomeric D/L-Cd/Zn-n MOFs (n=1~5, representing the adding amount of dyes), where D/L-Cd/Zn with the formula of Cd2(D/L–Cam)2(TPyPE) and Zn2(D/L–Cam)2(TPyPE) (D/L-Cam=D/L-camphoric acid, TPyPE=4,4’,4’’,4’’’-(1,2-henediidenetetra-4,1-phenylene)tetrakis[pyridine]) were used as the chiral platforms. The framework-dye-enabled emission and through-space chirality transfer facilitate D/L-Cd/Zn-n bright full-color CPL activity. The ideal yellow CPL of D-Cd-5 and D-Zn-4, with |glum| as 4.9 × 10−3 and 1.3×10−3 and relatively high photoluminescence quantum yield of 40.79 % and 45.40 %, are further assembled into a white CPL light-emitting diode. The crystal sizes of D/L-Cd/Zn-n were found to be strongly correlated to the types and additional amounts of organic dyes, that the positive organic dyes allow for the preparation of > 7 mm bulks and negative dyes account for sub-20 μm particles. This work opens a new avenue to fabricate full-color emissive CPL composites and provides a potentially universal method for controlling the size of optical platforms. © 2024 Wiley-VCH GmbH;
D O I:
10.1002/anie.202407596
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