Aggregation - an interesting phenomenon in polymethine dyes

被引:0
|
作者
Schedler, U. [1 ]
Ziemer, B. [1 ]
Bendig, J. [1 ]
Harder, T. [1 ]
机构
[1] Humboldt-Univ, Berlin, Germany
来源
Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals | 1994年 / 248卷
关键词
Agglomeration - Chemical modification - Glass - Molecular crystals - Molecular structure - Organic compounds - Reflection high energy electron diffraction - Surface treatment - Thin films - X ray analysis;
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学科分类号
摘要
Bisdimethylamino-tri- (BDT), -penta- (BDP), -hepta- (BDH), and nonamethines (BDN) on surfaces were investigated with regard to detect absorption bands caused by aggregation. The experiments prove that the aggregation tendency increases with prolonging the chain length. A new method preparing non-aggregated and aggregated layers of heptamethines on surfaces of glass was used. X-ray results and RHEED measurements were compared. We think that a `thin layer modification' is formed.
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页码:13 / 19
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