Novel Zinc Phthalocyanine-Benzoquinone Rigid Dyad and Its Photoinduced Electron Transfer Properties
摘要:
While preparing the first structurally rigid zinc phthalocyanine-benzoquinone (ZnPc-BQ) dyad as a model for photoinduced charge separation mimicking natural photosynthesis, a convenient method is developed for in situ generation of a benzoquinone chromophore in the dyad using an iso-butyryl mask. The dyad has no rotamers and possesses a fixed distance between ZnPc and BQ moieties (center-to-center and edge-to-edge distances are 9.40 and 2.14 angstrom, respectively). The dyad displays unusual electronic perturbation in the ground state, resulting from the interactions between Pc and BQ, and exhibits photoinduced electron transfer with a lifetime of 40 ps of the charged separated states. The steady-state fluorescence and electrochemical behavior of the dyad are evaluated. This study opens a route to subsequent dyads, triads, and complex architectures of electron donor-acceptor arrays with rigid structures and long charge separation states.
Lepage, Annales de Chimie (Cachan, France), 1959, vol. <13> 4, p. 1137,1176
作者:Lepage
DOI:——
日期:——
Novel Zinc Phthalocyanine-Benzoquinone Rigid Dyad and Its Photoinduced Electron Transfer Properties
作者:Chi-Hang Lee、Jiangchang Guo、Lin X. Chen、Braja. K. Mandal
DOI:10.1021/jo801293s
日期:2008.11.7
While preparing the first structurally rigid zinc phthalocyanine-benzoquinone (ZnPc-BQ) dyad as a model for photoinduced charge separation mimicking natural photosynthesis, a convenient method is developed for in situ generation of a benzoquinone chromophore in the dyad using an iso-butyryl mask. The dyad has no rotamers and possesses a fixed distance between ZnPc and BQ moieties (center-to-center and edge-to-edge distances are 9.40 and 2.14 angstrom, respectively). The dyad displays unusual electronic perturbation in the ground state, resulting from the interactions between Pc and BQ, and exhibits photoinduced electron transfer with a lifetime of 40 ps of the charged separated states. The steady-state fluorescence and electrochemical behavior of the dyad are evaluated. This study opens a route to subsequent dyads, triads, and complex architectures of electron donor-acceptor arrays with rigid structures and long charge separation states.
Synthesis, Isolation, and Characterization of Diels–Alder Adducts between 1,4-Dialkoxyanthracenes and Maleic Anhydride
In the Diels–Alderreaction of 1,4-dialkoxyanthracenes and maleicanhydride, which can afford syn- and anti-cycloadducts, the bridgehead methine proton of the cycloadducts has proved to be a useful...