| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an organic material which efficiently absorbs two photons. <P>SOLUTION: The azo compound performs the non-resonance two-photon absorption. For example, the compound is a metal azochelate compound expressed by formula (1). In formula (1), A<SB>1</SB>represents a residue which forms a five-member or six-member heterocycle together with the carbon atom or the nitrogen atom coupled with A<SB>1</SB>, X represents a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom, Y represents an alkyl group having at least two fluorine atoms substituted, and each of R<SB>21</SB>and R<SB>22</SB>represents a hydrogen atom, an alkyl group or a residue forming a ring of R<SB>21</SB>and R<SB>22</SB>. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
