信息记录材料
信息記錄材料
신식기록재료
INFORMATION RECORDING MATERIALS
2001年
1期
1-7
,共7页
菁染料超增感机理
菁染料超增感機理
정염료초증감궤리
根据“隔离”机理，超增感作用是由于J－聚集态染料与化学增感产物之间的空间分离而减少电子与空穴的复合。“隔离”是基于有机物在(Ag,Au)S中心上的独特吸附。这种独特吸附取决于超增感剂1，3偶极矩上的电荷距离是否与(Ag,Au)S斑中Ag＋(Au＋)和S－2离子之间的距离相符合。“隔离”机理不同于熟知的Gilman“还原”机理，根据本机理可通过不同结构有机物的组合应用使超增感作用获得超加和效应。
根據“隔離”機理，超增感作用是由于J－聚集態染料與化學增感產物之間的空間分離而減少電子與空穴的複閤。“隔離”是基于有機物在(Ag,Au)S中心上的獨特吸附。這種獨特吸附取決于超增感劑1，3偶極矩上的電荷距離是否與(Ag,Au)S斑中Ag＋(Au＋)和S－2離子之間的距離相符閤。“隔離”機理不同于熟知的Gilman“還原”機理，根據本機理可通過不同結構有機物的組閤應用使超增感作用穫得超加和效應。
근거“격리”궤리，초증감작용시유우J－취집태염료여화학증감산물지간적공간분리이감소전자여공혈적복합。“격리”시기우유궤물재(Ag,Au)S중심상적독특흡부。저충독특흡부취결우초증감제1，3우겁구상적전하거리시부여(Ag,Au)S반중Ag＋(Au＋)화S－2리자지간적거리상부합。“격리”궤리불동우숙지적Gilman“환원”궤리，근거본궤리가통과불동결구유궤물적조합응용사초증감작용획득초가화효응。
An isolation mechanism of supersensitization of cyanine dyesJ－aggregates is considered.It consists of decrease of electron－hole recombination due to space separation of the J－aggregates and the products of chemical sensitization .It is concluded that the basis for the isolation mechanism of supersensitization is a specific adsorption of organic compounds on (Ag，Au)S－centers.This adsorption is determined by conformity of distance between charges in 1， 3－dipoles of supersensitizer to distance between Ag＋ (Au＋ )and S2－ions in (Ag，Au)S cluster.The fundamental differences of the isolation mechanism from well known Gilman′ s reduction mechanism allows to realize superadditive supersensitization effect by the use of compositions of organic substances with a various structures.
