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https://hdl.handle.net/2440/62932
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Type: | Journal article |
Title: | Ruthenium Porphyrin Functionalized Single-Walled Carbon Nanotube Arrays: A Step Toward Light Harvesting Antenna and Multibit Information Storage |
Author: | Yu, J. Mathew, S. Flavel, B. Johnston, M. Shapter, J. |
Citation: | Journal of the American Chemical Society, 2008; 130(27):8788-8796 |
Publisher: | Amer Chemical Soc |
Issue Date: | 2008 |
ISSN: | 0002-7863 1520-5126 |
Statement of Responsibility: | Jingxian Yu, Simon Mathew, Benjamin S. Flavel, Martin R. Johnston and Joe G. Shapter |
Abstract: | Ruthenium porphyrin functionalized single-walled carbon nanotube arrays have been prepared using coordination of the axial position of the metal ion onto 4-aminopyridine preassembled single-walled carbon nanotubes directly anchored to a silicon(100) surface (SWCNTs-Si). The formation of these ruthenium porphyrin functionalized single-walled carbon nanotube array electrodes (RuTPP-SWCNTs-Si) has been monitored using infrared spectroscopy (IR), differential pulse voltammetry (DPV), atomic force microscopy (AFM), laser desorption time-of-flight mass spectroscopy (LDI-TOF-MS), UV-vis spectroscopy, fluorescence spectroscopy, and cyclic voltammetry. Electrochemical results show two successive one-electron reversible redox waves. The surface concentration of the ruthenium porphyrin molecules is 3.44 x 10 (-8) mol cm (-2). Optical results indicate that the immobilization of ruthenium porphyrin enhances the light absorption of SWCNTs-Si surfaces in the visible light region. Moreover mixed assembly of ferrocene/porphyrin onto carbon nanotube arrays has been achieved by altering the ratio of two redox-active species in the deposition solution. These results suggest the ruthenium porphyrin modified electrodes are excellent candidates for molecular memory devices and light harvesting antennae. |
Rights: | Copyright © 2008 American Chemical Society |
DOI: | 10.1021/ja801142k |
Published version: | http://dx.doi.org/10.1021/ja801142k |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
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