Synthesis and Solution Self-Assembly Behavior of Porphyrin Tethered by Fullerene C₆₀

Abstract:

This paper focuses on the synthesis, spectroscopic studies and self-assembly behavior of porphyrin phenyl linked fullerene C60 dyad, which included COOH groups in its fullerene unit so as to promote its adsorption onto TiO2. UV-Vis spectrum and steady-state fluorescence spectrum measurement, showed that the self-assembly of this compound in different solvents with different polarities. The results show that the soret absorption peak slightly blue shifted by 5 nm in acetonitrile and 2 nm in tetrahydrofuran, while the soret peaks in toluene solution was the same as in chloroform. Increasing concentration from 1x10-6 mol/L to 2x10-5 mol/L in chloroform resulted into aggregation, also the slight red shifting on cooling from 900C to 100C was observed from a temperature dependant UV-Vis absorption spectra, thus indicates aggregation. All these features may indicate presence of J-type aggregation happening in 4-methylphenyl-H2porhyrin-fullerene C60-COOH. In addition, the fluorescence of 4-methylphenyl-H2Porhyrin-fullerene C60-COOH has been quenched compared to that of pure 4-methylphenyl-H2porhyrin-OH under the same concentration. Therefore, this novel material design may find good application in photoelectric devices.

• Periodical: Advanced Materials Research (Volume 668)
• Pages: 696-700
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.668.696
• Online since: March 2013
• Authors: Wilson Lelei Sitienei, Lodrick Makokha Wangatia, Ting Zeng, Bin Sun, Mei Fang Zhu
• Keywords: Aggregation, Fullerene C₆₀, Porphyrin, Self-Assembly

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