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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 6
BKCSDE 31(6)
June 20, 2010

Title	Theoretical Studies on Dicyanoanthracenes as Organic Semiconductor Materials: Reorganization Energy
Author	Young Hee Park, Yun Hi Kim, Soon Ki Kwon, In Sun Koo, Kiyull Yang*
Keywords	Reorganization energy, Hole or electron hopping, Organic thin film transistor, Dicyanoanthracenes, Density functional theory
Abstract	Internal reorganization energy due to the structural relaxation in hole or electron hopping mechanism is one of the measurements of key indices in designing an organic thin film transistor (OTFT) for flexible display devices. In this study, the reorganization energies of dicyanoanthracenes for the hole and electron transfer were estimated by adiabatic potential energy surface and normal mode analysis method in order to examine the effect on the energies for the positional variation of the cyano substituents in the anthracene as a protocol of acenes to design an organic field effect transistor. The reorganization energy for the hole transfer was reduced considerably upon cyanation of anthracene, especially at the 9,10- positions of anthracene, and the origin of the reduction was interpreted in terms of understanding the coupling of vibrational modes to the hole transfer.
Page	1649 - 1656
Full Text	PDF

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