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Title: Photoelectric generation and second-order nonlinear optical characters of the dichromophore dye molecules

Abstract

Centrosymmetric molecules can exhibit strong second-harmonic generation (SHG) by Langmuir-Blodgett (LB) technique. The macroscopic nonlinearity {chi} of the monolayer film reaches 245 pm V{sup {minus}1} for 4,4{prime}-di{l_brace}1-[1-(N,N{prime}-dioctadecaneamino)phenylethylpyridinium bromide]octyl{r_brace}dipyridinium bromide (PMV{sub 8}) and that for 4,4{prime}-di{l_brace}1-[1-(N,N{prime}-dioctadecaneamino)phenylethylpyridinium bromide]propyl{r_brace}dipyridinium bromide (PMV{sub 3}) is 184 pm V{sup {minus}1}. Steady cathodic photocurrent is obtained upon excitation of the dyes incorporated into LB films deposited on an ITO electrode. The observed quantum yield of the photocurrent strongly depends on the applied electrode potential, concentration of the electron acceptor or donor, pH of the electrolyte, and the chemical structure of the dye congeners. The quantum yield reaches 4.73% for PMV{sub 8}, while that for PMV{sub 3} is 3.94%, under favorable conditions.

Authors:
; ; ; ; ; ;  [1]
  1. Peking Univ., Beijing (China)
Publication Date:
OSTI Identifier:
696645
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical
Additional Journal Information:
Journal Volume: 103; Journal Issue: 34; Other Information: PBD: 26 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HARMONIC GENERATION; THIN FILMS; OPTICAL PROPERTIES; NONLINEAR OPTICS; DYES; PHOTOELECTRIC CELLS

Citation Formats

Wu, D.G., Huang, C.H., Huang, Y., Gan, L.B., Yu, A.C., Ying, L.M., and Zhao, X.S. Photoelectric generation and second-order nonlinear optical characters of the dichromophore dye molecules. United States: N. p., 1999. Web. doi:10.1021/jp990606d.
Wu, D.G., Huang, C.H., Huang, Y., Gan, L.B., Yu, A.C., Ying, L.M., & Zhao, X.S. Photoelectric generation and second-order nonlinear optical characters of the dichromophore dye molecules. United States. doi:10.1021/jp990606d.
Wu, D.G., Huang, C.H., Huang, Y., Gan, L.B., Yu, A.C., Ying, L.M., and Zhao, X.S. Thu . "Photoelectric generation and second-order nonlinear optical characters of the dichromophore dye molecules". United States. doi:10.1021/jp990606d.
@article{osti_696645,
title = {Photoelectric generation and second-order nonlinear optical characters of the dichromophore dye molecules},
author = {Wu, D.G. and Huang, C.H. and Huang, Y. and Gan, L.B. and Yu, A.C. and Ying, L.M. and Zhao, X.S.},
abstractNote = {Centrosymmetric molecules can exhibit strong second-harmonic generation (SHG) by Langmuir-Blodgett (LB) technique. The macroscopic nonlinearity {chi} of the monolayer film reaches 245 pm V{sup {minus}1} for 4,4{prime}-di{l_brace}1-[1-(N,N{prime}-dioctadecaneamino)phenylethylpyridinium bromide]octyl{r_brace}dipyridinium bromide (PMV{sub 8}) and that for 4,4{prime}-di{l_brace}1-[1-(N,N{prime}-dioctadecaneamino)phenylethylpyridinium bromide]propyl{r_brace}dipyridinium bromide (PMV{sub 3}) is 184 pm V{sup {minus}1}. Steady cathodic photocurrent is obtained upon excitation of the dyes incorporated into LB films deposited on an ITO electrode. The observed quantum yield of the photocurrent strongly depends on the applied electrode potential, concentration of the electron acceptor or donor, pH of the electrolyte, and the chemical structure of the dye congeners. The quantum yield reaches 4.73% for PMV{sub 8}, while that for PMV{sub 3} is 3.94%, under favorable conditions.},
doi = {10.1021/jp990606d},
journal = {Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical},
number = 34,
volume = 103,
place = {United States},
year = {1999},
month = {8}
}