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Tunable Smart Surface of Gold Nanoparticles Achieved by Light‐Controlled Molecular Recognition Effection
Author(s) -
Luo Chunhua,
Zuo Fang,
Zheng Zhaohui,
Cheng Xu,
Ding Xiaobin,
Peng Yuxing
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700555
Subject(s) - azobenzene , colloidal gold , materials science , nanoparticle , nanotechnology , cyclodextrin , chemical engineering , smart polymer , polymer chemistry , chemistry , polymer , composite material , organic chemistry , engineering
Thermosensitive poly( N ‐isopropylacrylamide) (PNIPAm)‐coated gold nanoparticles (AuNPs) were prepared by self‐assembly of the azobenzene‐terminated PNIPAm on the surface of the α ‐cyclodextrin ( α ‐CD)‐capped AuNPs via the host–guest molecular recognition between α ‐CD and azobenzene. Reversible attachment–detachment of azobenzene‐terminated PNIPAm on the surface of α ‐CD‐capped AuNPs was achieved when subjected to visible and UV light irradiation alternately, which endowed thermosensitive AuNPs with tunable smart properties.