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A Bio‐Inspired Molecular Design Strategy toward 2D Organic Semiconductor Crystals with Superior Integrated Optoelectronic Properties
Author(s) -
Li YinXiang,
Dong XueMei,
Yu MengNa,
Liu Wei,
Nie YiJie,
Zhang Jing,
Xie LingHai,
Xu ChunXiang,
Liu JuQing,
Huang Wei
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202102060
Subject(s) - stacking , materials science , supramolecular chemistry , photoluminescence , semiconductor , nanotechnology , crystal (programming language) , self assembly , crystal engineering , membrane , organic semiconductor , bilayer , optoelectronics , crystallography , crystal structure , chemistry , organic chemistry , biochemistry , computer science , programming language
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 cm 2 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.