Layer-by-layer surface modification and patterned electrostatic deposition of quantum dots

被引：120

作者：

Jaffar, S

Nam, KT

Khademhosseini, A

Xing, J

Langer, RS

Belcher, AM ^{[1
]}

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[2] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

[3] MIT, Inst Soldier Nanotechnol, Cambridge, MA 02139 USA

[4] MIT, Div Biol Engn, Cambridge, MA 02139 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 08期

关键词：

D O I：

10.1021/nl0493287

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Modification of ZnS-capped CdSe quantum dot (QD) surfaces with polyelectrolyte coatings and subsequent layer-by-layer deposition to build hierarchical structures are presented. Mercaptoacetic acid (MAA)-treated QDs were sequentially coated with polyallylamine (PAA) and polyvinylsulfonic acid (PVSA) and analyzed using zeta potentials, absorbance spectra, and transmission electron microscopy. The modified QDs were deposited on patterned hyaluronic acid (HA) glass substrates to produce self-assembled heterostructures (QDs-MAA/QDs-PAA/HA/ glass), as revealed by fluorescence and atomic force microscopy.

引用

页码：1421 / 1425

页数：5

共 31 条

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