Energy and electron transfer are the subject of continuing attention, as key processes in molecular devices for light energy conversion and various electronic/photonic applications. The simplest systems for the study of such processes are D-B-A “dyads”, where donor (D) and acceptor (A) molecular components are connected by an appropriate bridge (B). A large number of inorganic dyads have been studied, where A and D are transition metal complexes, often of the polypyridine family [1,2]. Two features of these inorganic systems make their energy/electron transfer behavior more complex than that of common organic dyads: (i) the complex nature A and D, each comprising metal-localized and ligand-localized electronic subsystems, (ii) the presence of a bridging ligand, that may complicate the picture of B, D, and A as electronically localized subsystems. Because of these complex localization aspects, electronic factors play often very important roles in the behavior of inorganic dyads. Some examples from recent work in the authors’ laboratory will be presented, including (i) energy/electron transfer in dyads with aromatic polyquinoxaline bridges, (ii) energy transfer in isomeric cyclometalated dyads and (ii) long-range electron transfer across oligophenylene bridges. [1] F. Scandola, C. Chiorboli, M. T. Indelli, M. A. Rampi, in: Electron Transfer in Chemistry, V. Balzani, Ed.; Wiley-VCH, Weinheim, 2001. Volume III, Chapter 2.3, p. 337-408. [2] F. Scandola, C. Chiorboli, M. T. Indelli, M. A. Rampi, “Covalently Linked Systems Containing Metal Complexes” in: Electron Transfer in Chemistry, V. Balzani, Ed.; Wiley-VCH, Weinheim, 2001. Volume III, Chapter 2.3, p. 337-408. C. Chiorboli, M. T. Indelli, F. Scandola Top. Curr. Chem. 2005, 257, 63-102
ELECTRONIC EFFECTS IN ENERGY/ELECTRON TRANSFER PROCESSES OF INORGANIC DYADS
CHIORBOLI, Claudio;INDELLI, Maria Teresa;ORLANDI, Michele;RAVAGLIA, Marcella;SCANDOLA, Franco
2007
Abstract
Energy and electron transfer are the subject of continuing attention, as key processes in molecular devices for light energy conversion and various electronic/photonic applications. The simplest systems for the study of such processes are D-B-A “dyads”, where donor (D) and acceptor (A) molecular components are connected by an appropriate bridge (B). A large number of inorganic dyads have been studied, where A and D are transition metal complexes, often of the polypyridine family [1,2]. Two features of these inorganic systems make their energy/electron transfer behavior more complex than that of common organic dyads: (i) the complex nature A and D, each comprising metal-localized and ligand-localized electronic subsystems, (ii) the presence of a bridging ligand, that may complicate the picture of B, D, and A as electronically localized subsystems. Because of these complex localization aspects, electronic factors play often very important roles in the behavior of inorganic dyads. Some examples from recent work in the authors’ laboratory will be presented, including (i) energy/electron transfer in dyads with aromatic polyquinoxaline bridges, (ii) energy transfer in isomeric cyclometalated dyads and (ii) long-range electron transfer across oligophenylene bridges. [1] F. Scandola, C. Chiorboli, M. T. Indelli, M. A. Rampi, in: Electron Transfer in Chemistry, V. Balzani, Ed.; Wiley-VCH, Weinheim, 2001. Volume III, Chapter 2.3, p. 337-408. [2] F. Scandola, C. Chiorboli, M. T. Indelli, M. A. Rampi, “Covalently Linked Systems Containing Metal Complexes” in: Electron Transfer in Chemistry, V. Balzani, Ed.; Wiley-VCH, Weinheim, 2001. Volume III, Chapter 2.3, p. 337-408. C. Chiorboli, M. T. Indelli, F. Scandola Top. Curr. Chem. 2005, 257, 63-102I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
