title: Successful bifunctional photoswitching and electronic communication of two platinum(II) acetylide bridged dithienylethenes.
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.
authors.affiliation: Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
authors.forename: Matthew N
authors.initials: MN
authors.lastname: Roberts
authors.forename: Carl-Johan
authors.initials: CJ
authors.lastname: Carling
authors.forename: Jeffrey K
authors.initials: JK
authors.lastname: Nagle
authors.forename: Neil R
authors.initials: NR
authors.lastname: Branda
authors.forename: Michael O
authors.initials: MO
authors.lastname: Wolf