REDOR determination of the composition of shell cross-linked amphiphilic core-shell nanoparticles and the partitioning of sequestered fluorinated guests

被引：31
作者：
Huang, HY [1 ]
Wooley, KL [1 ]
Schaefer, J [1 ]
机构：
[1] Washington Univ, Dept Chem, St Louis, MO 63130 USA
来源：
MACROMOLECULES | 2001年 / 34卷 / 03期
关键词：
D O I：
10.1021/ma001003z
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Rotational-echo double-resonance (REDOR) C-13{F-19} and N-15{F-19} NMR spectra have been obtained for guest-host complexes of 6-fluorotryptophan and 4-(trifluoromethyl)benzophenone with polymeric amphiphilic nanoparticles, consisting of a polystyrene core covalently attached to a poly(acrylic acid)-co-[N-15]polyacrylamide shell. The REDOR spectra were used both to determine the composition of the nanoparticles and to find the locations of the fluorinated guests. Each guest resides near the core-shell interface of the nanoparticle, with the hydrophobic 4-(trifluoromethyl)benzophenone within the core and the amphiphilic 6-fluorotryptophan within the shell.
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收藏
页码：547 / 551
页数：5
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