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Covalent Attachment of Gold Nanoparticles to Surfaces and Polymeric Substrates Using UV Light
Author(s) -
Roth Peter J.,
Theato Patrick
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200485
Subject(s) - benzophenone , covalent bond , polymer chemistry , chemistry , polymer , photochemistry , colloidal gold , nanoparticle , condensation polymer , polycarbonate , microparticle , materials science , organic chemistry , chemical engineering , nanotechnology , engineering
Abstract Uniform benzophenone‐covered AuNP (Bph‐AuNP) were prepared in a two‐phase ethyl acetate/water reduction of auric acid employing a benzophenone‐functionalized disulfide. Upon UV irradiation, the benzophenone carbonyl bond was excited allowing for insertion into a nearby C–H bond and thus a covalent attachment of the AuNP onto a substrate exhibiting C–H bonds. Using this technique, polycarbonate–gold core–shell particles were easily obtained, providing a simple synthetic pathway toward AuNP hybrids with polycondensation polymers. Bph‐AuNP were also covalently attached to alkylated silica microspheres or cellulose paper. UV irradiation through a photo mask enabled a photolithographic surface patterning.