Charge transfer in sapphyrin-fullerene hybrids employing dendritic ensembles

Grimm B, Karnas E, Brettreich M, Ohta K, Hirsch A, Guldi DM, Torres T, Sessler JL (2010)


Publication Type: Journal article, Original article

Publication year: 2010

Journal

Original Authors: Grimm B., Karnas E., Brettreich M., Ohta K., Hirsch A., Guldi D.M., Torres T., Sessler J.L.

Publisher: American Chemical Society

Book Volume: 114

Pages Range: 14134-14139

Journal Issue: 45

DOI: 10.1021/jp906785f

Abstract

A new approach to creating noncovalent charge transfer ensembles is described. It is based on two components that are linked through anion-receptor interactions. The first component is sapphyrin, a pentapyrrolic expanded porphyrin, which is capable of carboxylate anion recognition and more importantly can act as a photodonor when irradiated in the presence of a suitable electron acceptor. The second component is the electron acceptor and consists of one of two different C fullerene cores functionalized with multiple carboxylate anion groups arranged in a dendritic fashion. Depending on the specific choice of the fullerene carboxylate anion dendrimer employed in ensemble construction, 1:1 or 1:2 complexes are formed when the C cores are titrated with sapphyrin. The resulting noncovalent arrays undergo sapphyrin-to-fullerene electron transfer when irradiated with 387 nm light. This gives rise to charge separated states with lifetimes of ca. 470 and 600 ps in the case of the 1:1 and 1:2 sapphyrin-fullerene ensembles, respectively. © 2010 American Chemical Society.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Grimm, B., Karnas, E., Brettreich, M., Ohta, K., Hirsch, A., Guldi, D.M.,... Sessler, J.L. (2010). Charge transfer in sapphyrin-fullerene hybrids employing dendritic ensembles. Journal of Physical Chemistry B, 114(45), 14134-14139. https://dx.doi.org/10.1021/jp906785f

MLA:

Grimm, Bruno, et al. "Charge transfer in sapphyrin-fullerene hybrids employing dendritic ensembles." Journal of Physical Chemistry B 114.45 (2010): 14134-14139.

BibTeX: Download