Time resolved excitation dynamics in emeraldine base

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00444776" target="_blank" >RIV/61389013:_____/15:00444776 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.chemphys.2014.12.010" target="_blank" >http://dx.doi.org/10.1016/j.chemphys.2014.12.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemphys.2014.12.010" target="_blank" >10.1016/j.chemphys.2014.12.010</a>

Result language
angličtina
Original language name
Time resolved excitation dynamics in emeraldine base
Original language description
Using femtosecond pump?probe transient absorption spectroscopy (wavelengths 330?800 nm), we observed and explained excited state, charge transfer and polaron state dynamics in emeraldine base form of polyaniline in dimethyl sulfoxide solution. The excited state created by a pump pulse (700 nm) in the quinoid absorption Q-band loses its initial symmetry by subsequent energy transition to a charge transfer state within 50 fs. The hot charge transfer state either recombines non-radiatively into the groundstate with decay time constant 0.55 ps or transfers into a relaxed state corresponding to the relaxed phenyl geometry during ca 2.1 ps. This relaxed state shows a prolonged lifetime of about 6.5 ps before its recombination to the ground state. However, asmall amount of long-lived polarons with lifetime of about 2 ns in air and with lifetime longer than 6 ns in the solution bubbled with dry N2 was detected.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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