|Title||Successful Bifunctional Photoswitching and Electronic Communication of Two Platinum(II) Acetylide Bridged Dithienylethenes|
|Publication Type||Journal Article|
|Year of Publication||2009|
|Authors||Roberts, MN, Carling, C-J, Nagle, JK, Branda, NR, Wolf, MO|
|Journal||JOURNAL OF THE AMERICAN CHEMICAL SOCIETY|
|Date Published||NOV 25|
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.