Experimental and theoretical study of near-infrared absorbing naphthoquinone methide dyes with a nonplanar geometry

…, K Yoshida, M Adachi, S Nakamura…

Index: Kubo, Yuji; Yoshida, Katsuhira; Adachi, Masafumi; Nakamura, Shinichiro; Maeda, Shuichi Journal of the American Chemical Society, 1991 , vol. 113, # 8 p. 2868 - 2873

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Citation Number: 41

Abstract

Abstract: The bathochromic shift of the near-infrared absorption spectra of naphthoquinone methide dyes has been observed as a function of increased steric hindrance between the quinone imine and aniline segments. This novel shift that results from the loss of planarity has been examined by means of semiempirical INDO/S and AMI models. Based on the configuration interaction (CI) analysis, the observed transitions in both the near-infrared ...