Artículos de revistas
Two-photon Absorption In Quadrupolar Bis(acceptor)-terminated Chromophores With Electron-rich Bis(heterocycle)vinylene Bridges
Registro en:
Chemistry Of Materials. , v. 19, n. 3, p. 432 - 442, 2007.
8974756
10.1021/cm061681l
2-s2.0-33847217301
Autor
Zheng S.
Leclercq A.
Fu J.
Beverina L.
Padilha L.A.
Zojer E.
Schmidt K.
Barlow S.
Luo J.
Jiang S.-H.
Jen A.K.-Y.
Yi Y.
Shuai Z.
Van Stryland E.W.
Hagan D.J.
Bredas J.-L.
Marder S.R.
Institución
Resumen
Two-photon absorption spectra for a range of bis(acceptor)-substituted bis(dibutoxythienyl)ethene and bis(N-hexylpyrrolyl)ethene chromophores have been recorded using Z-scan and white-light-continuum pump-probe techniques. All the chromophores studied show strong near-infrared two-photon absorption with cross sections in the range of 2400-5900 GM (1 GM = 1 × 10-50 cm 4 s/photon) at photon wavelengths between 1.0 and 1.3 μm; cross sections as high as 10000 GM can be accessed close to the one-photon absorption edge. Quantum-chemical calculations reproduce the experimentally observed variations of the two-photon properties with the chemical structure. © 2007 American Chemical Society. 19 3 432 442 Denk, W., Strickler, J.H., Webb, W.W., (1990) Science, 248, p. 73 So, P.T.C., Dong, C.Y., Masters, B.R., Berland, K.M., (2000) Annu. Rev. Biomed. Eng, 2, p. 399 Fisher, W.G., Partridge Jr., W.P., Dees, C., Wachter, E.A., (1997) Photochem. Photobiol, 66, p. 141 Spangler, C.W., (1999) J. Mater. 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