Understanding the Charge Transfer at the Interface of Electron Donors and Acceptors: TTF–TCNQ as an Example
Abstract
Charge transfer between an electron donor and an electron acceptor is widely accepted as being independent of their relative configurations if the interaction between them is weak; however, the limit of this concept for an interacting system has not yet been well established. Our study of prototypical electron donor–acceptor molecules, tetrathiafulvalene–tetracyanoquinodimethane, using density functional theory based on an advanced functional, clearly demonstrates that for interacting molecules, their configurational arrangement is as important as their individual electronic properties in the asymptotic limit to determine the charge transfer direction. For the first time, we demonstrate that by changing their relative orientation, one can reverse the charge transfer direction of the pair, causing the molecules to exchange roles as donor and acceptor. In conclusion, our theory has important implications for understanding the interfacial charge-transfer mechanism of hybrid systems and related phenomena.
- Authors:
-
[1];
[1]
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS); Fritz Haber Inst. of the Max Planck Society, Berlin (Germany)
- Univ. of New South Wales, Sydney, NSW (Australia)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1429209
- Grant/Contract Number:
- AC05-00OR22725; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Applied Materials and Interfaces
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 32; Journal ID: ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; density functional theory; hybrid functional; charge transfer; interface phenomena; TTF-TCNQ; electron donor–acceptor molecules
Citation Formats
Park, Changwon, Atalla, Viktor, Smith, Sean, and Yoon, Mina. Understanding the Charge Transfer at the Interface of Electron Donors and Acceptors: TTF–TCNQ as an Example. United States: N. p., 2017.
Web. doi:10.1021/acsami.7b04148.
Park, Changwon, Atalla, Viktor, Smith, Sean, & Yoon, Mina. Understanding the Charge Transfer at the Interface of Electron Donors and Acceptors: TTF–TCNQ as an Example. United States. https://doi.org/10.1021/acsami.7b04148
Park, Changwon, Atalla, Viktor, Smith, Sean, and Yoon, Mina. Fri .
"Understanding the Charge Transfer at the Interface of Electron Donors and Acceptors: TTF–TCNQ as an Example". United States. https://doi.org/10.1021/acsami.7b04148. https://www.osti.gov/servlets/purl/1429209.
@article{osti_1429209,
title = {Understanding the Charge Transfer at the Interface of Electron Donors and Acceptors: TTF–TCNQ as an Example},
author = {Park, Changwon and Atalla, Viktor and Smith, Sean and Yoon, Mina},
abstractNote = {Charge transfer between an electron donor and an electron acceptor is widely accepted as being independent of their relative configurations if the interaction between them is weak; however, the limit of this concept for an interacting system has not yet been well established. Our study of prototypical electron donor–acceptor molecules, tetrathiafulvalene–tetracyanoquinodimethane, using density functional theory based on an advanced functional, clearly demonstrates that for interacting molecules, their configurational arrangement is as important as their individual electronic properties in the asymptotic limit to determine the charge transfer direction. For the first time, we demonstrate that by changing their relative orientation, one can reverse the charge transfer direction of the pair, causing the molecules to exchange roles as donor and acceptor. In conclusion, our theory has important implications for understanding the interfacial charge-transfer mechanism of hybrid systems and related phenomena.},
doi = {10.1021/acsami.7b04148},
journal = {ACS Applied Materials and Interfaces},
number = 32,
volume = 9,
place = {United States},
year = {Fri Jun 16 00:00:00 EDT 2017},
month = {Fri Jun 16 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
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