fulltext.study @t Gmail

Photoinduced charge separation and recombination in solution and in gels of a Pt(II) terpyridyl–naphthalene diimide complex

Paper ID Volume ID Publish Year Pages File Format Full-Text
27309 44015 2009 8 PDF Available
Title
Photoinduced charge separation and recombination in solution and in gels of a Pt(II) terpyridyl–naphthalene diimide complex
Abstract

Light induced electron transfer and subsequent recombination in a covalently linked terpyridyl Pt(II)/naphthalene diimide (ND) donor acceptor complex are discussed. The complex consists of the ND moiety covalently linked to a terpyridine ligand through a tolyl linkage (ND-tpy) with chloride serving as the fourth ligand of the Pt(II) center ([(ND-tpy)PtCl]). Photolysis of the complex in acetonitrile solution results electron transfer from the Pt(II) complex to the ND unit. This is followed by a significant structural change in the oxidized Pt complex/reduced ND that leads to formation of a charge separated species that decays by back electron transfer with a rate constant of 8 × 104 s−1, a much slower recombination rate than other Pt(II) donor/organic acceptor systems. The complex forms gels when concentrated DMSO solutions are heated and allowed to cool slowly. The gels have long tubular structures and the dried gels exhibit long range order of the Pt centers, as evidenced by X-ray powder diffraction. Photolysis of the gels suspended in solution leads to formation of long lived radical ions, formed presumably from self-exchange electron hopping between stacked donor and acceptor moieties in the gels.

Keywords
Intramolecular electron transfer; Platinum complexes; Naphthalene diimide; Gel formation; Charge separation
First Page Preview
Photoinduced charge separation and recombination in solution and in gels of a Pt(II) terpyridyl–naphthalene diimide complex
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 207, Issue 1, 5 September 2009, Pages 86–93
Authors
, , ,
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