Efficient Low Driving Force Charge Separation in an Electron Deficient Zn-Porphyrin-Fullerene Donor-Acceptor Conjugate

Wolf M, Costa JIT, Minameyer M, Drewello T, Tome AC, Guldi DM (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 123

Pages Range: 28093-28099

Journal Issue: 46

DOI: 10.1021/acs.jpcc.9b09790

Abstract

Here, we present a novel conjugate based on a weakly electron-donating Zn(H)-meso-tetrakis(pentafluorophenyl)porphyrin linked to a strongly electron-accepting C-60. From spectroscopic and electrochemical investigations a 1.9 eV high charge-separated state is derived. Transient absorption spectroscopy measurements analyzed by global target analysis confirmed the successful charge separation with a quantum yield of 72% despite an overall small driving force of only 0.2 eV. The charge separated state lifetime is in the nanosecond range. Considering that 90% of the singlet excited state energy is transiently stored in the charge-separated state, we conclude a charge separation energy efficiency of 65%.

Authors with CRIS profile

Involved external institutions

University of Aveiro / Universidade de Aveiro Portugal (PT)

How to cite

APA:

Wolf, M., Costa, J.I.T., Minameyer, M., Drewello, T., Tome, A.C., & Guldi, D.M. (2019). Efficient Low Driving Force Charge Separation in an Electron Deficient Zn-Porphyrin-Fullerene Donor-Acceptor Conjugate. Journal of Physical Chemistry C, 123(46), 28093-28099. https://dx.doi.org/10.1021/acs.jpcc.9b09790

MLA:

Wolf, Maximilian, et al. "Efficient Low Driving Force Charge Separation in an Electron Deficient Zn-Porphyrin-Fullerene Donor-Acceptor Conjugate." Journal of Physical Chemistry C 123.46 (2019): 28093-28099.

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