Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5395258 | Computational and Theoretical Chemistry | 2011 | 6 Pages |
Abstract
DFT B3LYP/6-31Gâ method was used to calculate the equilibrium geometries and electron structures of a series of trinaphthylamine-centered pseudo octupolar molecules; ZINDO/SOS method was used to calculate the one-photon absorption(OPA) and two-photon absorption(TPA) properties. The calculated results show that 3(4-pyridinylvinyl)- trinaphthylamine (TN-3PY) has better OPA and TPA properties than 3(4-pyridinylvinyl)-triphenylamine (TP-3PY) because of the stronger electron-donating property of trinaphthylamine relative to triphenylamine. The TPA cross-sections of 2-benzoxazolyl (BZO) ended molecules are all larger about 1000Â GM than those of 4-pyridinyl (PY) ended ones; however their transparencies are not better than those of PY-ended molecules. When N atom in trinaphthylamine is replaced by B or Al, the octupolar molecules obtained do not show better TPA properties because B and Al have electron-accepting properties.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Zhao-Di Yang, Guiling Zhang, Ji-Kang Feng, Ai-Min Ren,