| abstract |
(57) [Abstract] [Purpose] To provide a polymer material excellent in blue light transmittance and a nonlinear optical material comprising the same. A nonlinear optical material containing a polymer represented by the following general formula (1). General formula (1) In the formula, X represents an oxygen atom, a sulfur atom or NR 5 . R 1 and R 3 may be the same or different and each represents a hydrogen atom or a methyl group, and R 2 represents an alkyl group. R 4 and R 5 represent an alkyl group, an aryl group and a heterocyclic group, and m represents an integer of 2 to 12. p and q And the ratio is 0 to 4. |