Reversible loading and unloading of nanoparticles in "Exponentially" growing polyelectrolyte LBL films

被引：79

作者：

Srivastava, Sudhanshu ^{[1
]}

Ball, Vincent ^{[2
]}

Podsiadlo, Paul ^{[1
]}

Lee, Jungwoo ^{[1
]}

Ho, Peter ^{[1
]}

Kotovlt, Nicholas A. ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem Engn Mat Sci & Engn Biomed Engn, Ann Arbor, MI 48109 USA

[2] Univ Strasbourg 1, Fac Chim Dentaire, Inst Natl Sante Rech Med, Unite Mixte Rech 595, F-67085 Strasbourg, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 12期

关键词：

D O I：

10.1021/ja7110288

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The exponentially growing layer-by-layer ILK) films made from poly(diallyldimethylammonium chloride) (PDDA) and poly(acrylic acid) pAA) were used to load and unload the CdTe nanoparticles (NPs). The reversible loading of NPs were investigated through UV-vis studies and further confirmed by confocal microscopy. In addition the LBL films were also compared for the release kinetics for pH 9 and 7 and films capped with (PDDA-pSS)(10) layers. The amount of released particles at pH 9 was found to be at least 2 orders of magnitude higher than those at pH 7 and with (PDDA-PSS)(10) capped layers after 25 K This variation in film response for CdTe-particle release presents a route for studies in which highly swollen exponentially growing LBL films can be loaded with functionalized NPs for biological applications and explored as carriers to hold the Nps inside the films for self-assembly.

引用

页码：3748 / +

页数：3

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