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From Glutathione Capping to a Crosslinked, Phytochelatin‐Like Coating of Quantum Dots
Author(s) -
Zheng Yuangang,
Yang Zichao,
Li Yuqiong,
Ying Jackie Y.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200703237
Subject(s) - materials science , quantum dot , coating , nanoclusters , amine gas treating , nanotechnology , carboxylate , aqueous solution , biocompatible material , metal , chemical engineering , organic chemistry , chemistry , metallurgy , medicine , engineering , biomedical engineering
Coating of quantum dots (QDs), derived from both aqueous synthesis and organometallic routes, with a crosslinked peptide sheath via mimicking phytochelatin‐coated heavy metal nanoclusters in plant cells is reported. This coating greatly improves the stability of QDs, while maintaining their optical properties. Coated QDs contain carboxylate and amine groups for facile conjugation with various bioprobes. They are biocompatible and have an overall size as small as 6 nm.