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Molecular Design of Synthetic Polypeptides for Nonlinear Optics

Published online by Cambridge University Press:  21 February 2011

T. Ishii ,
T. Wada ,
A. F. Garito ,
H. Sasabe  and
A. Yamada
T. Ishii
Affiliation:
Frontier Research Program (RIKEN) 2–1, Hirosawa, Wako-shi, Saitama 351–01, Japan
T. Wada
Affiliation:
Frontier Research Program (RIKEN) 2–1, Hirosawa, Wako-shi, Saitama 351–01, Japan
A. F. Garito
Affiliation:
Frontier Research Program (RIKEN) 2–1, Hirosawa, Wako-shi, Saitama 351–01, Japan
H. Sasabe
Affiliation:
Frontier Research Program (RIKEN) 2–1, Hirosawa, Wako-shi, Saitama 351–01, Japan
A. Yamada
Affiliation:
Frontier Research Program (RIKEN) 2–1, Hirosawa, Wako-shi, Saitama 351–01, Japan
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Abstract

Second order molecular susceptibilities β of poly(γ – benzyl L–glutamate)(PBLG) and poly(γ – p–nitrobenzyl L–glutamate) (PNBLG) were determined by means of dc-induced second harmonic generation (dc-SHG technique in solutions at a wavelength of 1064nm as 1.5×10–−29 esu and −4.9×10−29 esu, respectively. Among PBLG, PNBLG and nitrobenzene, it was found that only PNBLG has negative value of β. It follows that the effect of nitrophenyl groups in side chains is dominant for β whereas the contribution of carbonyl groups in main chain is dominant for the permanent dipole moment μ in PNBLG.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 175: Symposium S – Multifunctional Materials , 1989 , 129
Copyright
Copyright © Materials Research Society 1990

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