Disilane-and siloxane-bridged biphenyl and bithiophene derivatives as electron-transporting materials in OLEDs

H Kai, J Ohshita, S Ohara, N Nakayama, A Kunai…

Index: Kai, Hiroyuki; Ohshita, Joji; Ohara, Sayaka; Nakayama, Naohiro; Kunai, Atsutaka; Lee, In-Sook; Kwak, Young-Woo Journal of Organometallic Chemistry, 2008 , vol. 693, # 23 p. 3490 - 3494

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Citation Number: 20

Abstract

Optical, electrochemical, and electron-transporting properties of disilane-and siloxane- bridged biphenyl and bithiophene derivatives were investigated, in comparison with those of the monosilane-bridged analogues (siloles). The UV spectra and cyclic voltammograms indicated that elongation of the silicon bridge suppresses the π-conjugation, in accordance with the results of DFT calculations. The DFT calculations indicated also that the disilane- ...