Improving photocurrent generation: Supramolecularly and covalently functionalized single-wall carbon nanotubes-polymer/porphyrin donor-acceptor nanohybrids

Journal article
(Original article)


Publication Details

Author(s): Rahman A, Troeger A, Sgobba V, Guldi DM, Jux N, Tchoul MN, Ford WT, Mateo-Alonso A, Prato M
Journal: Chemistry - A European Journal
Publisher: Wiley-VCH Verlag
Publication year: 2008
Volume: 14
Journal issue: 29
Pages range: 8837-8846
ISSN: 0947-6539


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.



FAU Authors / FAU Editors

Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Jux, Norbert Prof. Dr.
Interdisziplinäres Zentrum für Molekulare Materialien
Sgobba, Vito Dr.
Lehrstuhl für Physikalische Chemie I
Troeger, Anna
Lehrstuhl für Physikalische Chemie I


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions
Oklahoma State University
Università degli Studi di Trieste


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.

BibTeX: 

Last updated on 2019-17-04 at 14:50