Volume 63, Issue 49 e202407596
Research Article

Loading Dyes into Chiral Cd/Zn-Metal–Organic Frameworks for Efficient Full-Color Circularly Polarized Luminescence

Dr. Hua-Qing Yin

Dr. Hua-Qing Yin

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

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Jia Chen

Jia Chen

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

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Yu-Wei Xue

Yu-Wei Xue

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

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Jing Ren

Jing Ren

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

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Xin-Hui Wang

Xin-Hui Wang

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

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Heng-Rui Fan

Heng-Rui Fan

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

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Shu-Yan Wei

Shu-Yan Wei

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

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Bo Sun

Bo Sun

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

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Prof. Zhi-Ming Zhang

Corresponding Author

Prof. Zhi-Ming Zhang

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

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First published: 04 October 2024
Citations: 3

Graphical Abstract

The sizes of chiral MOFs can be controlled from sub-20 μm to over 7 mm by tuning the types and additional amounts of organic dyes. The full-color circularly polarized luminescence MOFs are synthesized by different dyes encapsulation, which are further assembled into a white CPL light-emitting diode.

Abstract

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.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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