Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/175414
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Curutchet Barat, Carles E. | - |
dc.contributor.author | Voityuk, Alexander A. | - |
dc.date.accessioned | 2021-03-19T10:49:59Z | - |
dc.date.available | 2021-03-19T10:49:59Z | - |
dc.date.issued | 2012-10-25 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.uri | http://hdl.handle.net/2445/175414 | - |
dc.description.abstract | The possibility to optimize optoelectronic devices, such as organic light-emitting diodes or solar cells, by exploiting the special characteristics of triplet electronic states and their migration ability is attracting increased attention. In this study, we analyze how an intervening solvent modifies the distance dependence of triplet electronic energy transfer (TEET) processes by combining molecular dynamics simulations with quantum chemical calculations of the transfer matrix elements using the Fragment Excitation Difference (FED) method. We determine the β parameter characterizing the exponential distance decay of TEET rates in a stacked perylene dimer in water, chloroform, and benzene solutions. Our results indicate that the solvent dependence of β (βvacuum = 5.14 Å-1 > βwater = 3.77 Å-1 > βchloroform = 3.61 Å-1 > βbenzene = 3.44 Å-1) can be rationalized adopting the McConnell model of superexchange, where smaller triplet energy differences between the donor and the solvent lead to smaller β constants. We also estimate the decay of hole transfer (HT) and excess electron transfer (EET) processes in the system using the Fragment Charge Difference (FCD) method and find that βTEET can be reasonably well approximated by the sum of βEET and βHT constants. | - |
dc.format.extent | 7 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Chemical Society | - |
dc.relation.isformatof | Versió postprint del document publicat a: http://dx.doi.org/10.1021/jp306280y | - |
dc.relation.ispartof | Journal of Physical Chemistry C, 2012, vol. 116, num. 42, p. 22179-22185 | - |
dc.rights | (c) American Chemical Society , 2012 | - |
dc.source | Articles publicats en revistes (Farmàcia, Tecnologia Farmacèutica i Fisicoquímica) | - |
dc.subject.classification | Dinàmica molecular | - |
dc.subject.classification | Transferència d'energia | - |
dc.subject.classification | Dissolvents | - |
dc.subject.classification | Química quàntica | - |
dc.subject.other | Molecular dynamics | - |
dc.subject.other | Energy transfer | - |
dc.subject.other | Solvents | - |
dc.subject.other | Quantum chemistry | - |
dc.title | Distance dependence of triplet energy transfer in water and organic solvents: A QM/MD study | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 618917 | - |
dc.date.updated | 2021-03-19T10:49:59Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Farmàcia, Tecnologia Farmacèutica i Fisicoquímica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
618917.pdf | 4.03 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.