Volume 61, Issue 45 e202209438
Communication

Chiral-at-Cage Carboranes for Circularly Polarized Luminescence and Aggregation-Induced Electrochemiluminescence

Jingjing Tong

Jingjing Tong

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Yue Cao

Yue Cao

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Yi-Wen Zhang

Yi-Wen Zhang

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Peng Wang

Peng Wang

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Penglong Wang

Penglong Wang

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Xiang-Ji Liao

Xiang-Ji Liao

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Weigang Zhang

Weigang Zhang

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Prof. Yi Wang

Corresponding Author

Prof. Yi Wang

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan, 238200 P. R. China

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Prof. You-Xuan Zheng

Corresponding Author

Prof. You-Xuan Zheng

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan, 238200 P. R. China

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Prof. Jun-Jie Zhu

Prof. Jun-Jie Zhu

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Prof. Yi Pan

Prof. Yi Pan

State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan, 238200 P. R. China

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First published: 14 September 2022
Citations: 29

Graphical Abstract

Two chiral-at-cage carbazole-modified carboranes emit circularly polarized luminescence (CPL) and aggregation-induced electrochemiluminescence (AIECL). The |gPL| factors of (R/S)-Cb1 and (R/S)-Cb2 enantiomers in films reached 7.38×10−3. Significant solvation effect was observed in the fluorescence and CPL of Cb1, while Cb2 showed remarkable AIECL effect with excellent ECL stability and dopamine detection ability.

Abstract

Herein, we report the structures of chiral-at-cage carborane derivatives bearing carbazole chromophores that emit circularly polarized luminescence (CPL) and aggregation-induced electrochemiluminescence (AIECL). By adjusting the substituent positions on the carborane derivatives, two chiral luminescent molecules, Cb1 and Cb2, with different properties were obtained. The photoluminescence dissymmetry factors |gPL| of both (R/S)-Cb1 and (R/S)-Cb2 enantiomers in neat films were as high as 6.24×10−3 and 7.38×10−3, respectively. Cb1 showed a deep blue emission peak at 434 nm in n-pentane. Interestingly, distinct fluorescence and CPL spectra were observed in solvents of different polarities due to the twisted intramolecular charge transfer effect, suggesting its potential use in solvent recognition. Meanwhile, Cb2 exhibited good AIECL property, excellent ECL stability and could be used for determining dopamine concentrations, suggesting its potential applications in biology and diagnosis.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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