| abstract |
Provided is an organic nonlinear optical material having a high light emission efficiency, which has a large two-photon absorption cross-section, is likely to cause two-photon absorption, has a large Stokes shift, and can efficiently extract fluorescence generated by two-photon excitation. . An organic nonlinear optical material containing a compound represented by the following general formula (I) as at least a part of a constituent component. (Ar 2 ) m -Ar 1- (Ar 3 ) n (I) [In General Formula (I), Ar 1 represents a divalent heterocyclic group represented by the following General Formula (II), and Ar 2 and Ar 3 may each independently have a substituent. A heterocyclic group having aromaticity or an aromatic hydrocarbon ring group, m and n each represent an integer of 1 to 4, and when m and / or n is 2 or more, each of Ar 2 and / or Ar 2 is 2 or more 3 may be the same as or different from each other, and Ar 2 and Ar 1 , and Ar 1 and Ar 3 are bonded together in a state in which a conjugated system is connected. Embedded image (In general formula (II), ring A and ring Z represent a ring condensed by sharing two carbon atoms, and each may have a substituent.)] [Selection figure] None |