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Functionalized Gold Nanoparticles Mimic Catalytic Activity of a Polysiloxane‐Synthesizing Enzyme
Author(s) -
Kisailus D.,
Najarian M.,
Weaver J. C.,
Morse D. E.
Publication year - 2005
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.200401109
Subject(s) - materials science , catalysis , alkoxide , template , nanoparticle , sponge , monolayer , colloidal gold , nucleophile , grafting , nanotechnology , siloxane , self assembled monolayer , surface modification , silicon , chemical engineering , combinatorial chemistry , organic chemistry , chemistry , polymer , botany , engineering , metallurgy , composite material , biology
A synthetic analogue of a naturally occurring enzyme has been produced by grafting appropriate nucleophilic and hydrogen‐bonding functionalities to gold nanoparticles via self‐assembled monolayers (see Figure and cover). The synthetic analogue mimics silicatein proteins, which act as both catalysts and templates for formation of silica needles in a marine sponge, converting silicon alkoxide precursors to silica at low temperatures and near‐neutral pH.