journal article·2023-07

Stoichiometric and Chiral Stacking Tailoring of Dibenzocarbazole Analog–TCNB Charge‐Transfer Cocrystals via Supramolecular Assembly for Variable Optical Behaviors

Shuang Ma, Hua Sun, Jinqiu Chen, Yue Yu, Haolin Lu, Shuai Wang, Jing Zhang, Jianfeng Zhao, Guankui Long, Xue‐Dong Wang

Advanced Optical Materials· Volume 11· Issue 13
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Abstract

Abstract In this paper, three new donor–acceptor complex forms (zBC) containing a helical‐shape dibenzocarbazole analog (DBCz) as the electron donor and 1,2,4,5‐tetracyanobenzene (TCNB) as the electron acceptor via a simple solution‐processing strategy are reported. The beginning components self‐assembled into supramolecular frameworks with glamorous alignment modes and different molar ratios: ≈1:1 P or M‐enantiomer for α‐cocrystal, alternated P/M‐column stacking in mesmeric 2:3 β‐cocrystal, and segregated stacking of γ‐cocrystal. As a result, α‐cocrystal exhibits bright solid‐state red fluorescent, β‐cocrystal shows significant optical waveguide behavior with a low optical loss coefficient of ≈0.018 dB µm−1, and no visual light emission is observed for γ‐cocrystal under ultraviolet radiation. Interestingly, the α‐zBC crystal is not only emissive but also chiroptically active with dissymmetry factor (glum) of 0.004. This study on chiral stacking tailoring paves a way for functional design of organic charge‐transfer complex toward application in high‐performance organic optoelectronics.
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Research context

OpenAlex topics: Luminescence and Fluorescent Materials · Crystallography and molecular interactions · Metal-Organic Frameworks: Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Organic Electronics and Information Displays Nanjing University of Posts & Telecommunications Institute of Advanced Materials (IAM) 9 Wenyuan Road Nanjing 210023 China

Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Joint International Research Laboratory of Carbon‐Based Functional Materials and Devices Soochow University 199 Ren'ai Road Suzhou Jiangsu 215123 China

School of Materials Science and Engineering Smart Sensing Interdisciplinary Science Center Nankai University No.38 Tongyan Road, Jinnan District Tianjin 300350 China

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) @ School of Flexible Electronics (SoFE) Nanjing 210023 China

Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 China

State Key Laboratory of Polymer Materials Engineering Sichuan University Sichuan 610065 China

Funding

National Natural Science Foundation of China · Collaborative Innovation Center of Suzhou Nano Science and Technology

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