Color‐ and Dimension‐Tunable Light‐Harvesting Organic Charge‐Transfer Alloys for Controllable Photon‐Transport Photonics,Angewandte Chemie International Edition

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Color‐ and Dimension‐Tunable Light‐Harvesting Organic Charge‐Transfer Alloys for Controllable Photon‐Transport Photonics
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-10-18 , DOI: 10.1002/anie.202010707
Xixi Han ₁ , Yilong Lei ₁ , Qing Liao ₂ , Hongbing Fu _{1,

2}

Affiliation

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.

中文翻译：

颜色和尺寸可调的光捕获有机电荷转移合金，用于可控光子传输光子学

专门设计了由comprising和（9,10-二氰基蒽）（DCA）组成的电子给体/受体对，通过溶液共组装路线通过弱CT相互作用来构建有机电荷转移（CT）合金。通过调整Pe和DCA之间的摩尔比，就可以实现涉及一个维（1D）（DCA）color-和尺寸可调的CT合金组件_{1- X}（PE）_X（0≤ X ≤10％）microribbons和双尺寸（2D）（Pe）_{1- y}（DCA）_y（0≤y从DCA或α-Pe到Pe-DCA CT复合物的能量转移的结果是≤5％的纳米片。重要的是，还揭示了尺寸相关的光波导性能：1D（DCA）_{1- x}（Pe）_x微带中的连续可调光损耗，以及2D（Pe）_{1- y}（DCA）_y中从各向同性波导到各向异性波导的连续转换纳米片。本工作为深入研究光收集有机CT合金组件提供了理想的平台，该平台显示了在小型光电设备中的应用前景。

更新日期：2020-10-18

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