Premium
A Triphenylamine/Bis(terpyridine)Ir III Dyad for the Assembly of Charge‐Separation Constructs with Improved Performances
Author(s) -
Flamigni Lucia,
Ventura Barbara,
Baranoff Etienne,
Collin JeanPaul,
Sauvage JeanPierre
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200700669
Subject(s) - chemistry , triphenylamine , dyad , terpyridine , benzamide , acceptor , triad (sociology) , charge (physics) , photochemistry , stereochemistry , organic chemistry , psychology , social psychology , physics , quantum mechanics , psychoanalysis , metal , condensed matter physics
A new dyad DII‐Ir consisting of a triphenylamine donor and a bis(terpyridine)Ir III acceptor separated by a bridge composed of two benzamide groups has been synthesized. The electrochemical and photophysical properties of the dyad have been compared to those of a corresponding dyad D‐Ir characterized by a bridge connecting the donor and the acceptor consisting of a single benzamide unit. We show that, whereas the charge‐separation steps are still very efficient in the long dyad (≥99 %), charge recombination is slowed by a factor of three with respect to the short dyad. This encourages the use of this dyad in the assembly of a more elaborate array DII‐Ir‐A, expected to overcome the disappointingly low charge‐separation yield of a previously studied D‐Ir‐A short triad. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)