Near-IR Electrochromism in Electrodeposited Thin Films of Cyclometalated Complexes

被引:22
作者
Ionescu, Andreea [1 ]
Aiello, Iolinda [1 ]
La Deda, Massimo [1 ,2 ]
Crispini, Alessandra [1 ,2 ]
Ghedini, Mauro [1 ,2 ]
De Santo, Maria Penelope [2 ,3 ]
Godbert, Nicolas [1 ]
机构
[1] Univ Calabria, LASCAMM CR INSTM, Ctr Eccellenza CEMIF CAL,Unita INSTM Calabria, Dipartimento Chim & Tecnol Chim,MAT INLAB Lab Mat, I-87036 Arcavacata Di Rende, Italy
[2] Univ Calabria, CNR Nanotec, Ist Nanotecnol UOS Cosenza, I-87036 Cosenza, Italy
[3] Univ Calabria, Dipartimento Fis, I-87036 Cosenza, Italy
关键词
cyclometalated metallopolymers; Pd(II) complexes; Pt(II) complexes; Pt-Pt interactions; electropolymerization and electrochromism; ELECTROPOLYMERIZED FILMS; PLATINUM(II) COMPLEXES; CYCLOPLATINATED COMPLEXES; METALLOPOLYMERIC FILMS; PT INTERACTIONS; SOLAR-CELLS; PI-PI; POLYMERS; TRIPHENYLAMINE; DEVICES;
D O I
10.1021/acsami.6b01167
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Homogeneous thin films of controlled thickness obtained from cyclometalated complexes of general formula [(C boolean AND N)M(O boolean AND N)], where M = Pd(II) or Pt(II), H(C boolean AND N) = 2-phenylpyridine and, respectively, 2-thienylpyridine and H(O boolean AND N) = a triphenylamine functionalized Schiff base, have been deposited by oxidative electropolymerization. The films have been electrochemically and morphologically characterized. The metallopolymeric thin films present stable reversible redox behavior and typical cauliflower-like textures in agreement with a nucleation growth electropolymerization mechanism However, the film growth is greatly influenced by the nature complexes to promote the 3D growth. Furthermore, a complete electrodeposited films showing near-IR absorption in the oxidized state, of the metal center, with a higher tendency of the Pt spectroelectrochernical study has been performed on electrodeposited films showing near-IR absorption in the oxidized state, high contrast ratios (up to 65%) and low response times.
引用
收藏
页码:12272 / 12281
页数:10
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