Improving photocurrent generation: Supramolecularly and covalently functionalized single-wall carbon nanotubes-polymer/porphyrin donor-acceptor nanohybrids
Rahman A, Troeger A, Sgobba V, Guldi DM, Jux N, Tchoul MN, Ford WT, Mateo-Alonso A, Prato M (2008)
Publication Type: Journal article, Original article
Publication year: 2008
Journal
Original Authors: Rahman G.M.Aminur, Troeger A., Sgobba V., Guldi D.M., Jux N., Tchoul M.N., Ford W.T., Mateo-Alonso A., Prato M.
Publisher: Wiley-VCH Verlag
Book Volume: 14
Pages Range: 8837-8846
Journal Issue: 29
Abstract
Novel nanohybrids based on covalently and noncovalently functionalized single-wall carbon nanotubes (SWNTs) have been prepared and assembled for the construction of photoactive electrodes. Polymer-grafted SWNTs were synthesized by free-radical polymerization of (vinylbenzyl)trimethylammonium chloride. Poly[(vinylbenzyl)trimethylammonium chloride] (PVBTA) was also noncovalently wrapped around SWNTs to form stable, positively charged SWNT/PVBTA suspensions in water. Versatile donor-acceptor nanohybrids were prepared by using the electrostatic/van der Waals interactions between covalent SWNT-PVBTA and/or noncovalent SWNT/PVBTA and porphyrins (HP and/or ZnP ). Several spectroscopic, microscopic, transient, and photoelectrochemical measurements were taken to characterize the resulting supramolecular complexes. Photoexcitation of the nanohybrids afforded long-lived radical ion pairs with lifetimes as long as 2.2 us. In the final part, photoactive electrodes were constructed by using a layer-by-layer technique on an indium tin oxide covered glass support. Photocurrent measurements gave remarkable internal photon-to-current efficiencies of 3.81 and 9.90% for the covalent ZnP-/SWNT-PVBTA and noncovalent ZnP /SWNT/PVBTA complex, respectively, when a potential of 0.5 V was applied. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
Authors with CRIS profile
Anna Troeger
Lehrstuhl für Physikalische Chemie I
Vito Sgobba
Lehrstuhl für Physikalische Chemie I
Dirk Michael Guldi
Lehrstuhl für Physikalische Chemie I
Norbert Jux
Interdisziplinäres Zentrum für Molekulare Materialien
Additional Organisation(s)
Involved external institutions
United States (USA) (US)
Italy (IT)How to cite
APA:
Rahman, A., Troeger, A., Sgobba, V., Guldi, D.M., Jux, N., Tchoul, M.N.,... Prato, M. (2008). Improving photocurrent generation: Supramolecularly and covalently functionalized single-wall carbon nanotubes-polymer/porphyrin donor-acceptor nanohybrids. Chemistry - A European Journal, 14(29), 8837-8846. https://dx.doi.org/10.1002/chem.200801018
MLA:
Rahman, Aminur, et al. "Improving photocurrent generation: Supramolecularly and covalently functionalized single-wall carbon nanotubes-polymer/porphyrin donor-acceptor nanohybrids." Chemistry - A European Journal 14.29 (2008): 8837-8846.
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