期刊
RSC ADVANCES
卷 5, 期 27, 页码 21189-21196出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra15615c
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- CSIR, New Delhi
A novel visible light assisted photoredox catalyst system for surface initiated atom transfer radical polymerization (SI-ATRP) is developed for polymer growth on the surface of titania/reduced graphene oxide (TiO2/rGO) nanocomposites using tetrasulfonated copper(II) phthalocyanine (CuPcS) as catalyst at ambient temperature. The synthesized composite was initially treated with 3-aminopropyltrimethoxysilane (APTMS), and then functionalized with 2-bromoisobutyryl bromide (BIBB) moieties, serving as a surface initiator for ATRP. In the present method, TiO2/rGO acted as a photoactive material to reduce Cu(II) to a Cu(I) complex under visible light by a one-electron transfer process as well as a surface for ATRP initiator immobilization and gave polymer linked TiO2/rGO composites. These hybrid materials were found to show high dispersability in organic solvents.
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