Jump to main content
Jump to site search


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

Abstract

The current work focuses on self-assembled 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 poly(p-phenylene)s 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.

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Apr 2019, accepted on 15 May 2019 and first published on 16 May 2019


Article type: Paper
DOI: 10.1039/C9NR02824B
Nanoscale, 2019, Accepted Manuscript

  •   Request permissions

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

    B. Wang, S. Bauroth, A. Saha, M. Chen, T. Clark, X. Lu and D. M. Guldi, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR02824B

Search articles by author

Spotlight

Advertisements