| abstract |
PCT No. PCT/JP88/00740 Sec. 371 Date Mar. 17, 1989 Sec. 102(e) Date Mar. 17, 1989 PCT Filed Jul. 22, 1988 PCT Pub. No. WO89/01181 PCT Pub. Date Feb. 9, 1989.A non-linear optical material comprises a derivative of chalcone represented by the following general formulae (I) or (II) of: <IMAGE> (I) <IMAGE> (II) wherein R1 and R2 each represent a halogen atom, a hydroxyl group, an amino group, a dimethylamino group, a nitro group, a cyano group, a phenyl group, an acetyl group, an alkyl group having 1 to 18 carbon atoms or an alkyloxy group having 1 to 22 carbon atoms; n1 and n2 each represent an interger of from 0 to 21; and m1 and m2 each represent an integer of from 0 to 5. |