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Successful Bifunctional Photoswitching and Electronic Communication of Two Platinum(II) Acetylide Bridged Dithienylethenes

TitleSuccessful Bifunctional Photoswitching and Electronic Communication of Two Platinum(II) Acetylide Bridged Dithienylethenes
Publication TypeJournal Article
Year of Publication2009
AuthorsRoberts, MN, Carling, C-J, Nagle, JK, Branda, NR, Wolf, MO
JournalJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume131
Pagination16644+
Date PublishedNOV 25
ISSN0002-7863
Abstract

Coordinating two dithienylethenes to a platinum center results in the reversible ring closure of both photochromic units in a model for a photoresponsive pi-conjugated polymer. This system demonstrates how metal-sensitized photochemistry, from a triplet excited state, circumvents the problems associated with other multicomponent photochromic systems, where significant electronic interactions in the ground state and singlet excited state prevent full photoswitching. Changes in charge-transfer behavior based upon conversion of both dithienylethenes to their ring-closed forms illustrate how photomodulation of conductivity through a conjugated polymer might be achieved using Pt-bis(acetylide)s.

DOI10.1021/ja907434x