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Title: Electron transfer beyond the static picture: A TDDFT/TD-ZINDO study of a pentacene dimer

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4729047· OSTI ID:1386642

We use time-dependent density functional theory and time-dependent ZINDO (a semi-empirical method) to study transfer of an extra electron between a pair of pentacene molecules. A measure of the electronic transfer integral is computed in a dynamic picture via the vertical excitation energy from a delocalized anionic ground state. With increasing dimer separation, this dynamical measurement of charge transfer is shown to be significantly larger than the commonly used static approximation (i.e., LUMO+1–LUMO of the neutral dimer, or HOMO–LUMO of the charged dimer), up to an order of magnitude higher at 6 Å. These results offer a word of caution for calculations involving large separations, as in organic photovoltaics, where care must be taken when using a static picture to model charge transfer.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Molecularly Engineered Energy Materials (MEEM)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
SC0001342
OSTI ID:
1386642
Journal Information:
Journal of Chemical Physics, Vol. 137, Issue 22; Related Information: MEEM partners with University of California, Los Angeles (lead); University of California, Berkeley; Eastern Washington University; University of Kansas; National Renewable Energy Laboratory; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English

References (34)

Generalized Gradient Approximation Made Simple journal October 1996
New coupled-cluster methods with singles, doubles, and noniterative triples for high accuracy calculations of excited electronic states journal January 2004
Electron transfer with TD-Split, a linear response time-dependent method journal November 2011
Real-time linear response for time-dependent density-functional theory journal November 2004
Electron Transport in Molecular Wire Junctions journal May 2003
Electron transfers in chemistry and biology journal August 1985
Time-dependent local-density approximation in real time journal August 1996
Self-Consistent-Field X α Cluster Method for Polyatomic Molecules and Solids journal February 1972
Applications of the random phase approximation with the INDO/S Hamiltonian: UVVIS spectra of free base porphin journal December 1990
Modeling Fast Electron Dynamics with Real-Time Time-Dependent Density Functional Theory: Application to Small Molecules and Chromophores journal April 2011
Intramolecular Long-Distance Electron Transfer in Organic Molecules journal April 1988
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films journal October 1991
Charge Transport Properties in Discotic Liquid Crystals:  A Quantum-Chemical Insight into Structure−Property Relationships journal March 2004
Electron tunneling in solid-state electron-transfer reactions journal February 1987
Molecular Recognition and Conductance in Crown Ethers journal November 2003
Time-Dependent Theory of the Rate of Photo-induced Electron Transfer journal September 2011
Accurate spin-dependent electron liquid correlation energies for local spin density calculations: a critical analysis journal August 1980
Efficient Degradation of Toxic Organic Pollutants with Ni 2 O 3 /TiO 2 - x B x under Visible Irradiation journal April 2004
Nonadiabatic Molecular Dynamics Simulation of Light-Induced Electron Transfer from an Anchored Molecular Electron Donor to a Semiconductor Acceptor journal August 2002
Time-dependent density functional theory for radicals journal March 1999
octopus: a tool for the application of time-dependent density functional theory journal September 2006
Generalization of the Mulliken-Hush treatment for the calculation of electron transfer matrix elements journal January 1996
Extracting electron transfer coupling elements from constrained density functional theory journal October 2006
Ehrenfest dynamics with a time-dependent density-functional-theory calculation of lifetimes and resonant widths of charge-transfer states of Li + near an aluminum cluster surface journal August 2009
Reliable Prediction of Charge Transfer Excitations in Molecular Complexes Using Time-Dependent Density Functional Theory journal March 2009
Charge-Transfer and Energy-Transfer Processes in π-Conjugated Oligomers and Polymers:  A Molecular Picture journal November 2004
The influence of initial conditions on charge transfer dynamics journal January 2009
Time-Dependent Density Functional Response Theory for Molecules book November 1995
NWChem: A comprehensive and scalable open-source solution for large scale molecular simulations journal September 2010
Coupled-cluster theory in quantum chemistry journal February 2007
Ab Initio Calculation of Vibrational Absorption and Circular Dichroism Spectra Using Density Functional Force Fields journal November 1994
Electron transport in molecular junctions journal December 2006
A time-dependent semiempirical approach to determining excited states journal June 2010
The Electronic Couplings in Electron Transfer and Excitation Energy Transfer journal April 2009