| abstract |
The present invention provides a two-photon light-emitting compound represented by formula (1), an optical data recording medium comprising a compound represented by formula (1), a two-photon polymerizable composition comprising a polymerizable monomer or polymerizable oligomer and at least compound represented by formula (1), and a photopolymerization process:n nX 2 —(—CR 4 ═CR 3 —) m —C(═O)—(—CR 1 ═CR 2 —) n —X 1 (1)n wherein X 1 and X 2 may be the same or different and each represent a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom or substituent; some of R 1 , R 2 , R 3 and R 4 may be connected to each other to form at least one ring; and n and m each independently represent an integer of from 1 to 4, with the proviso that when n and m are 2 or more, the plurality of R 1 's, R 2 's, R 3 's, and R 4 's each may be the same or different. |