PURPOSE: To obtain a nonlinear optical material with the aggregation, crystalliza tion and orientational relaxation reduced in a high content and having a large secondary and tertiary nonlinear optical characteristics by incorporating a specified compd. or its derivative.
CONSTITUTION: One or more kinds of compds. shown by the formula or their derivatives are incorporated. In the formula, (k) and (1) are an integer satisfying (k+1)≥2 and 1≥k≥0, π11 to π1m and π21 to π2m are a π-electron conjugated cyclic compd. consisting of a monocyclic or condensed polycyclic compd., the conjugated couplings X1 and X2 are a couple of atoms or atomic group consisting of O, S, SO, and SO2, the conjugated couplings Y11 to Y1m-1, Z11 to Z1m-1, Y21 to Y2n-1 and Z21 to Z2n-1 are a couple of atoms or atomic group selected from a group consisting of CH, N and N-O, R111 to R1n-1 and R2m-1q to R2n-1q are hydrogen atom or alkyl, R1m1 to R1m- and R2mq to R2nq are hydrogen atom, alkyl or electrondonative group.
HOSODA MASAHIRO
TAI KAZUO
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