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Covalent Immobilization of a TiW 5 Polyoxometalate on Derivatized Silicon Surfaces
Author(s) -
Errington R. John,
Petkar Sagar S.,
Horrocks Benjamin R.,
Houlton Andrew,
Lie Lars H.,
Patole Samson N.
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200461065
Subject(s) - polyoxometalate , covalent bond , scanning tunneling microscope , silicon , porous silicon , nucleation , materials science , nanotechnology , crystallography , chemistry , optoelectronics , catalysis , organic chemistry
Covalent ties : The polyoxometalate ( n Bu 4 N) 3 [(MeO)TiW 5 O 18 ] is easily anchored to alkanol‐functionalized surfaces of porous and single‐crystal silicon (see picture, polyhedra: polyoxometalate, dark blue: Si surface). Scanning tunneling microscopy reveals the growth of 35–50 nm diameter islands on functionalized Si(111), which suggests that the immobilized polyoxometalates act as nucleation sites for electrostatic aggregation.