Tetrathiafulvalene-based nanotweezers-noncovalent binding of carbon nanotubes in aqueous media with charge transfer implications

Romero C, Garcia R, Herranz MA, Ehli C, Ruppert M, Hirsch A, Guldi DM, Martin N (2012)

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Original Authors: Romero-Nieto C., Garcia R., Herranz M.A., Ehli C., Ruppert M., Hirsch A., Guldi D.M., Martin N.

Publisher: American Chemical Society

Book Volume: 134

Pages Range: 9183-9192

Journal Issue: 22

DOI: 10.1021/ja211362z

Abstract

Electron donor-acceptor hybrids based on single wall carbon nanotubes (SWCNT) are one of the most promising functional structures that are currently developed in the emerging areas of energy conversion schemes and molecular electronics. As a suitable electron donor, π-extended tetrathiafulvalene (exTTF) stands out owing to its recognition of SWCNT through π-π stacking and electron donor-acceptor interactions. Herein, we explore the shape and electronic complementarity between different types of carbon nanotubes (CNT) and a tweezers-shaped molecule endowed with two exTTFs in water. The efficient electronic communication between semiconducting SWCNT/multiwall carbon nanotubes (MWCNT), on one hand, and the water-soluble exTTF nanotweezers 8, on the other hand, has been demonstrated in the ground and excited state by using steady-state as well as time-resolved spectroscopies, which were further complemented by microscopy. Importantly, appreciable electronic communication results in the electronic ground state having a shift of electron density, that is, from exTTFs to CNT, and in the electronic excited state having a full separation of electron density, that is oxidized exTTF and reduced CNT. Lifetimes in the range of several hundred picoseconds, which were observed for the corresponding electron transfer products upon light irradiation, tend to be appreciably longer in MWCNT/8 than in SWCNT/8. © 2012 American Chemical Society.

Authors with CRIS profile

Involved external institutions

Universidad Complutense de Madrid (UCM) Spain (ES)

How to cite

APA:

Romero, C., Garcia, R., Herranz, M.A., Ehli, C., Ruppert, M., Hirsch, A.,... Martin, N. (2012). Tetrathiafulvalene-based nanotweezers-noncovalent binding of carbon nanotubes in aqueous media with charge transfer implications. Journal of the American Chemical Society, 134(22), 9183-9192. https://doi.org/10.1021/ja211362z

MLA:

Romero, Carlos, et al. "Tetrathiafulvalene-based nanotweezers-noncovalent binding of carbon nanotubes in aqueous media with charge transfer implications." Journal of the American Chemical Society 134.22 (2012): 9183-9192.

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