| abstract |
The present invention provides a chromophore having very excellent nonlinear optical activity compared with conventional chromophores and a nonlinear optical element including the chromophore. Among the chromophores comprising a donor moiety D, a π-conjugated bridging moiety B, and an acceptor moiety A, the donor moiety D contains a chromophore substituted with an aryl group substituted by a substituted oxy group, and The chromophore is the nonlinear optical element. |