Journal ArticleDOI
Photoelectrochemistry in particulate systems. 5. Visible light‐induced polymerization of 1‐vinylpyrene in semiconductor suspensions
Prashant V. Kamat,R. V. Todesco +1 more
TLDR
In this article, a photoelectrochemical polymerization of 1-vinylpyrene has been achieved in a semiconductor photocatalyst suspension under visible light irradiation (λ > 480 nm).Abstract:
Photoelectrochemical polymerization of 1-vinylpyrene has been achieved in a semiconductor photocatalyst suspension under visible light irradiation (λ > 480 nm). Bandgap excitation of CdS, CdSe or Fe2O3 led to the oxidation of 1-vinylpyrene, which initiated the polymerization process. A 25–47% yield of poly(1-vinylpyrene) could be obtained upon irradiation of these semiconductor photocatalyst suspensions with 1-vinylpyrene in acetonitrile. Dependence of the polymer yield on various experimental conditions is described.read more
Citations
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Journal ArticleDOI
Colloidal semiconductors as photocatalysts for solar energy conversion
TL;DR: In this article, photochemical and photophysical processes that directly influence the photocatalytic properties of semiconductor colloids and the factors that limit the charge transfer at the semiconductor/electrolyte interface are discussed.
Journal ArticleDOI
Photoinitiation of buthylmethacrylate polymerization by colloidal semiconductor nanoparticles
TL;DR: In this paper, a free radical mechanism of the butylmethacrylate photopolymerization induced by investigated nanosized semiconductors was inferred based on the kinetic parameters of the process.
Journal ArticleDOI
One- and two-photon induced polymerization of methylmethacrylate using colloidal CdS semiconductor quantum dots.
Nicholas C. Strandwitz,Anzar Khan,Shannon W. Boettcher,Alexander Mikhailovsky,Craig J. Hawker,Thuc-Quyen Nguyen,Galen D. Stucky +6 more
TL;DR: The large TPA cross-sections coupled with modest quantum efficiencies for initiation reveal the unique potential of molecularly passivated QDs as efficient two-photon photosensitizers for polymerization.
Journal ArticleDOI
The Photopolymerization and Characterization of Methyl Methacrylate Initiated by Nanosized Titanium Dioxide
Ceng Dong,Xiuyuan Ni +1 more
TL;DR: In this article, a double species initiation of methyl methacrylate polymerization with nano-TiO2 semiconductors was investigated. And the progress of the polymerization was investigated and the products were characterized using various tools of instrumental analysis such as NMR, TGA, DSC, and FT-Raman spectroscopy.
Patent
Multiphoton photochemical process and articles preparable thereby
TL;DR: In this paper, a process for fabricating an article by exposing a photoreactive composition to light under multiphoton absorption conditions is described, where the light passes through an optical system having a final optical element having a numeric aperture in a range of from 0.65 to 1.25, inclusive.