“推-拉”型偶氮苯功能化聚酯膜的光学相位共轭和光致异构  

Optical phase conjugation and photoisomerization of novel polyester films functionalizied by nitroazobenzene with push pull structures

作　　者：颜星中[1] 魏雄[1] 罗挺 蔡志岗[1] 梁兆熙[1] 余振新[1] 

机构地区：[1]中山大学超快速激光光谱学国家重点实验室

出　　处：《激光技术》1997年第5期272-276,共5页Laser Technology

基　　金：国家教委博士点专项基金;国家自然科学基金

摘　　要：研究了２类以４’（Ｎ，Ｎ二羟乙基）氨基４硝基偶氮苯功能化的聚酯膜的光学相位共轭波的产生和光致异构。解释了聚酯膜产生饱和吸收和聚酯膜以顺式异构体的单线基态到单线激发态与反式异构体的单线基态到单线激发态的两个独立二能级系统通过光致异构耦合构成的四能级系统的响应特征。研究了膜厚、聚酯结构与泵浦光强对相位共轭波产生的影响。The optical phase conjugation and photoisomerization of some films of two kinds of polyesters functionalizied by 4 bis(N,N hydroxyethylene) imino 4 nitroazobenzene have been studied.The photoresponsive mechanism of these films was explained quite well by a model of four level energy system,which was consisting of two pairs of siglet states of trans and cis isomers,respectively.Photoismerization was the main intramolecular relaxtion between both two level energy systems.Investigation on effects of pump intensities,polyester structures and thicknees of films has been also carried out.

关 键 词：光学相位共轭 光致异构 偶氮苯 聚酯膜 

分 类 号：O633.14[理学—高分子化学]