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journal article·2021-08

A Bio‐Inspired Molecular Design Strategy toward 2D Organic Semiconductor Crystals with Superior Integrated Optoelectronic Properties

Yin‐Xiang Li, Xue‐Mei Dong, Meng‐Na Yu, Wei Liu, Yi‐Jie Nie, Jing Zhang, Ling‐Hai Xie, Chun‐Xiang Xu, Ju‐Qing Liu, Wei Huang

Small· Volume 17· Issue 34
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Source abstract

Abstract

Abstract Inspired by the 2D bilayer lipid membranes in nature, a unique supramolecular “push–pull” synergetic strategy toward self‐assembled 2D organic crystals (2DOCs) is proposed in this work, which can effectively suppress the interlayer 3D stacking while maintaining the assembly of the intralayer for 2D growth. For this purpose, a model molecule PF‐Py consisting of a planar supramolecular “attractor” and a nonplanar steric “repellor” is designed for the solution self‐assembly process. Well‐defined 2DOCs including crystal nanosheets and millimeter‐sized crystal films with layered amphiphile‐like packing are obtained, which is analogical to the cell membranes of living organisms. Thanks to the special packing mode, the 2DOCs have fascinating integrated photoelectric property, with high mobility of 7.8 × 10−2 cm2 V−1 s−1, high crystalline state photoluminescence quantum yield of 55%, and superior deep‐blue laser characteristics with a low threshold of 5.51 µJ cm−2. This supramolecular synergetic strategy advances the design of 2D organic semiconductor crystals for high performance optoelectronics.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Luminescence and Fluorescent Materials · 2D Materials and Applications · Supramolecular Self-Assembly in Materials

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

Affiliations

Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China

Centre for Molecular Systems and Organic Devices (CMSOD) State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials(IAM) Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing 210023 China

State Key Laboratory of Bioelectronics School of Biological Sciences and Medical Engineering Southeast University 2 Sipailou Nanjing 210096 P. R. China

Frontiers Science Center for Flexible Electronics (FSCFE) MIIT Key Laboratory of Flexible Electronics (KLoFE) Northwestern Polytechnical University Xi'an 710072 China

Funding

National Natural Science Foundation of China · China Postdoctoral Science Foundation · Postdoctoral Research Foundation of China

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