4.8 Article

Three-State Near-Infrared Electrochromism at the Molecular Scale

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 12, Pages 4058-4061

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b00586

Keywords

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Funding

  1. National Natural Science Foundation of China [91227104, 21271176, 21472196, 21221002]
  2. National Basic Research 973 program of China [2011CB932301]
  3. Ministry of Science and Technology of China [2012YQ120060]
  4. Strategic Priority Research Program of the Chinese Academy of Sciences [XDB 12010400]

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Self-assembled monolayer films of a cyclometalated ruthenium complex with a redox-active amine substituent and three carboxylic acid groups have been prepared on ITO electrode surfaces. The obtained thin films show three-state electrochromic switching with low electrochemical potential inputs and high near-infrared absorbance outputs. Thanks to the long retention time of each oxidation states, these films have been used to demonstrate surface-confined flip-flop memory functions with high ON/OFF ratios at the molecular scale.

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