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2D Organic Photonics: An Asymmetric Optical Waveguide in Self‐Assembled Halogen‐Bonded Cocrystals
Author(s) -
Zhuo MingPeng,
Tao YiChen,
Wang XueDong,
Wu Yuchen,
Chen Shuo,
Liao LiangSheng,
Jiang Lei
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201806149
Subject(s) - materials science , microscale chemistry , planar , waveguide , optoelectronics , photonics , anisotropy , optical anisotropy , nanotechnology , optics , liquid crystal , computer graphics (images) , mathematics , mathematics education , physics , computer science
Anisotropic organic molecular construction and packing are crucial for the optoelectronic properties of organic crystals. Two‐dimensional (2D) organic crystals with regular morphology and good photon confinement are potentially suitable for a chip‐scale planar photonics system. Herein, through the bottom‐up process, 2D halogen‐bonded DPEpe‐F 4 DIB cocrystals were fabricated that exhibit an asymmetric optical waveguide with the optical‐loss coefficients of R Backward =0.0346 dB μm −1 and R Forward =0.0894 dB μm −1 along the [010] crystal direction, which can be attributed to the unidirectional total internal reflection caused by the anisotropic molecular packing mode. Based on this crystal direction‐oriented asymmetric photon transport, these as‐prepared 2D cocrystals have been demonstrated as a microscale optical logic gate with multiple input/out channels, which will offer potential applications as the 2D optical component for the integrated organic photonics.