SELF-ORGANIZATION OF AMPHIPHILIC PORPHYRINS AT THE AIR-WATER-INTERFACE

被引:91
作者
KROON, JM
SUDHOLTER, EJR
SCHENNING, APHJ
NOLTE, RJM
机构
[1] AGR UNIV WAGENINGEN, DEPT ORGAN CHEM, 6703 HB WAGENINGEN, NETHERLANDS
[2] UNIV NIJMEGEN, DEPT ORGAN CHEM, 6525 ED NIJMEGEN, NETHERLANDS
关键词
D O I
10.1021/la00001a037
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The Langmuir-Blodgett film forming properties of a series of pyridyl((hexadecyloxy)phenyl)porphyrins have been examined. Good monolayers of these compounds have been prepared in most cases without the use of matrix molecules and the monolayers are readily transferable to glassy slides. The small mean molecular areas, as obtained from the surface-pressure-area isotherms, indicate a tilted orientation of the porphyrin rings with respect to the water surface. It was found by means of W-vis absorption spectroscopy at the air-water interface and by Brewster angle microscopy that intermolecular interaction between porphyrin rings mutually directs the organization at submonolayer coverage. Upon compression, the self-assembled domains come into close contact without reorganization of the layer structure. It was also demonstrated that porphyrins with three and four aliphatic side chains self-assembled into a highly-ordered arrangement in contrast to the porphyrins with one and two alkyl chains.
引用
收藏
页码:214 / 220
页数:7
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