期刊
INORGANIC CHEMISTRY
卷 52, 期 17, 页码 10000-10008出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic401288g
关键词
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资金
- National Natural Science Foundation of China [91227104, 21002104, 21271176, 212210017]
- National Basic Research 973 program of China [2011CB932301]
- Institute of Chemistry, Chinese Academy of Sciences [CMS-PY201230]
Oxidative electropolymerization of cyclometalated bisruthenium complexes [(Nptpy)(2)Ru-2(tppyr)](PF6)(2) and [(Nptpy)(2)Ru-2(tpb)](PF6)(2) produced adherent metal, lopolymeric films on electrode surfaces, where Nptpy is 4'.. (p-N,N-diphenylamino)pheny1-2,2':6',2-terpyridine, tppyr is the 2,7-bisdeprotonated form of 1,3,6,8-tetra(pyrid-2-yI)pyrene, and tpb is the 3,6-bisdeprotonated form of 1,2,4,5tetra(pyrid-2-yl)benzene. The resulting polymers are composed of two types of alternating constituent units: tppyr- or Apb-bridged cyclometalated bisruthenium units and biphenylbridged bis-triarylamine segments. These films exhibited four .well-defined anodic redox couples as a result of the stepwise oxidations of these two units. By manipulating the intervalence charge-transfer transitions of mixed-valent bisrutheniurn and bis-triarylamine units, five-stage near-infrared electrochromism with stepwise color, changes accompanied by good contrast ratio and coloration efficiency has been realized in these films. The film characterization by scanning electronic microscopy and X-ray photoelectron spectroscopy techniques are presented as well.
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