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A Molecular Platform for Multistate Near‐Infrared Electrochromism and Flip‐Flop, Flip‐Flap‐Flop, and Ternary Memory
Author(s) -
Cui BinBin,
Tang JianHong,
Yao Jiannian,
Zhong YuWu
Publication year - 2015
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.201504584
Subject(s) - electrochromism , ternary operation , redox , materials science , absorbance , flip flop , infrared , electrode , electrochemistry , optoelectronics , photochemistry , chemistry , optics , computer science , physics , chromatography , cmos , metallurgy , programming language
A diruthenium complex with a redox‐active amine bridge has been designed, synthesized, and studied by single‐crystal X‐ray analysis and DFT and TDDFT calculations. It shows three well‐separated redox processes with exclusive near‐infrared (NIR) absorbance at each redox state. The electropolymerized film of a related vinyl‐functionalized complex displays multistate NIR electrochromism with low operational potential, good contrast ratio, and long retention time. Flip‐flop, flip‐flap‐flop, and ternary memories have been realized by using the obtained film (ca. 15–20 nm thick) with three electrochemical inputs and three NIR optical outputs that each displays three levels of signal intensity.