Tuning electron transfer in supramolecular nano-architectures made of fullerenes and porphyrins

Wang B, Bauroth S, Saha A, Chen M, Clark T, Lu X, Guldi DM (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 11

Pages Range: 10782-10790

Journal Issue: 22

DOI: 10.1039/c9nr02824b

Abstract

The current work focuses on self-assembled nano-architectures in which metal-ligand coordination between a zinc tetraphenyl-porphyrin (ZnP) and a zinc tetrakis(4-((1,3-dithiol-2-ylidene)methyl)phenyl)-porphyrin (ZnP-TDP), as electron donors, and functionalized fullerenes (C60) featuring different conjugated pyridine substituents as electron acceptors have been designed and investigated. Stoichiometric ratios and binding constants were derived from absorption and fluorescence measurements. Important insight into the free-energy change of charge separation and recombination was obtained from differential pulse voltammetry studies. Compelling evidence for energy transfer, charge separation and recombination was obtained from femtosecond and nanosecond transient-absorption measurements in a wide temperature range. Intramolecular energy transfer is found to take place from TDP to ZnP followed by intramolecular charge transfer from ZnP to C60. Semiempirical and density-functional theory calculations were used to help understand the excited-state deactivation mechanisms.

Authors with CRIS profile

Involved external institutions

University of Science and Technology of China (USTC) China (CN) Huazhong University of Science & Technology China (CN)

How to cite

APA:

Wang, B., Bauroth, S., Saha, A., Chen, M., Clark, T., Lu, X., & Guldi, D.M. (2019). Tuning electron transfer in supramolecular nano-architectures made of fullerenes and porphyrins. Nanoscale, 11(22), 10782-10790. https://dx.doi.org/10.1039/c9nr02824b

MLA:

Wang, Bingzhe, et al. "Tuning electron transfer in supramolecular nano-architectures made of fullerenes and porphyrins." Nanoscale 11.22 (2019): 10782-10790.

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