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Orientation‐Controlled 2D Anisotropic and Isotropic Photon Transport in Co‐crystal Polymorph Microplates
Author(s) -
Liu Yong,
Hu Huiping,
Xu Ling,
Qiu Bing,
Liang Jie,
Ding Fang,
Wang Kang,
Chu Manman,
Zhang Wei,
Ma Ming,
Chen Bo,
Yang Xinzheng,
Zhao Yong Sheng
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201913441
Subject(s) - isotropy , anisotropy , dipole , photon , transition dipole moment , orientation (vector space) , absorption (acoustics) , optics , materials science , crystal (programming language) , molecular physics , condensed matter physics , physics , geometry , quantum mechanics , mathematics , computer science , programming language
Abstract 2D anisotropic transport of photons/electrons is crucial for constructing ultracompact on‐chip circuits. To date, the photons in organic 2D crystals usually exhibit the isotropic propagation, and the anisotropic behaviors have not yet been fully demonstrated. Now, an orientation‐controlled photon–dipole interaction strategy was proposed to rationally realize the anisotropic and isotropic 2D photon transport in two co‐crystal polymorph microplates. The monoclinic microplate adopts a nearly horizontal transition dipole moment (TDM) orientation in 2D plane, exhibiting anisotropic photon–dipole interactions and thus distinct re‐absorption waveguide losses for different 2D directions. By contrast, the triclinic plate with a vertical TDM orientation, shows 2D isotropic photon–dipole interactions and thus the same re‐absorption losses along different directions. Based on this anisotropy, a directional signal outcoupler was designed for the directional transmission of the real signals.