Disstacking of phthalocyanine in water by poly(ethylene oxide)

被引：28
作者：
Ngai, T
Zhang, GZ
Li, XY
Ng, DKP
Wu, C [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China
[2] Univ Sci & Technol China, Dept Chem Phys, Open Lab Bond Select Chem, Hefei, Anhui, Peoples R China
来源：
LANGMUIR | 2001年 / 17卷 / 05期
关键词：
D O I：
10.1021/la0011937
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
It was found that use of hydrophilic poly(ethylene oxide) (PEO) as a dispersion agent could disstack phthalocyanine IPC) in water and enhance its luminescence quantum yield. A combination of laser light scattering, UV-vis, and fluorescence spectroscopy was used to study the PEO/PC interaction. Our results revealed that, for a given weight concentration, long PEO chains were more effective than shorter ones to disstack PC into individual molecules. The PEO concentration dependence of UV-vis and fluorescence emission spectra showed that one long PEO chain (M-w similar to 10 000 g/mol) is as effective as 25 short PEO chains (M-w similar to 2000 g/mol).
引用
收藏
页码：1381 / 1383
页数：3
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