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Color‐ and Dimension‐Tunable Light‐Harvesting Organic Charge‐Transfer Alloys for Controllable Photon‐Transport Photonics
Author(s) -
Han Xixi,
Lei Yilong,
Liao Qing,
Fu Hongbing
Publication year - 2021
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.202010707
Subject(s) - perylene , materials science , photonics , isotropy , waveguide , optoelectronics , acceptor , anisotropy , photon , optics , fluorescence , physics , condensed matter physics
An electron donor/acceptor pair comprising perylene (Pe) and 9,10‐dicyanoanthracene (DCA) was specifically designed to construct organic charge‐transfer (CT) alloys via weak CT interaction through a solution co‐assembly route. By adjusting the molar ratio between Pe and DCA, we achieve color‐ and dimension‐tunable CT alloy assemblies involving one‐dimensional (1D) (DCA) 1− x (Pe) x (0 ≤ x ≤10 %) microribbons and two‐dimensional (2D) (Pe) 1− y (DCA) y (0 ≤ y ≤5 %) nanosheets as a consequence of energy transfer from DCA or α‐Pe to Pe‐DCA CT complex. Importantly, dimension‐related optical waveguiding performances are also revealed: continuously adjustable optical loss in 1D (DCA) 1− x (Pe) x microribbons and successive conversion from isotropic waveguide to anisotropic waveguide in 2D (Pe) 1− y (DCA) y nanosheets. The present work provides a desired platform for in‐depth investigation of light‐harvesting organic CT alloy assemblies, which show promising applications in miniaturized optoelectronic devices.