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Conformation-dependent photoinduced hydrogen evolution with Co(II)tetraphenylporphyrin–poly(l-glutamate) complex

Paper ID Volume ID Publish Year Pages File Format Full-Text
29264 44143 2007 7 PDF Available
Title
Conformation-dependent photoinduced hydrogen evolution with Co(II)tetraphenylporphyrin–poly(l-glutamate) complex
Abstract

Hydrogen production was performed under visible-light and combined UV/visible-light irradiation by using a system consisting of cobalt(II)tetraphenylporphyrin (CoTPP), methylviologen (MV2+), ethylenediaminetetraacetic acid disodium salt and Pt-loaded poly(l-glutamate) (Poly(Glu)) in aqueous decylammonium chloride (DeAC) solution. CoTPP was solubilized in hydrophobic clusters of DeAC induced by its cooperative binding to Poly(Glu). About 0.15 and 3.5 μmol of hydrogen gas were obtained after irradiation for 3 h using visible-light and combined UV/visible-light, respectively. The rate of hydrogen evolution depended on the change in the conformation of Poly(Glu) induced by the cooperative binding with DeAC. An electron was transferred from CoTPP to MV2+ in the Poly(Glu)–DeAC complex system via the singlet state, finally resulting in the hydrogen evolution.

Keywords
Cobalt(II)tetraphenylporphyrin; Conformation dependence; Hydrogen production; Platinum colloid; Poly(l-glutamate); Cooperative binding
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Conformation-dependent photoinduced hydrogen evolution with Co(II)tetraphenylporphyrin–poly(l-glutamate) complex
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 189, Issues 2–3, 25 June 2007, Pages 198–204
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us