Two-photon Absorption Spectrum In Diazoaromatic Compounds

This Letter studies the degenerate two-photon absorption (2PA) spectra of three diazoaromatic compounds using Z-scan with fs-pulses. The 2PA spectra exhibit resonant enhancement of the nonlinearity as the excitation approaches the linear absorption. The absence of 2PA to the ππ* band is related to the weaker donor/acceptor groups, and lower symmetry of diazoaromatic compounds, in agreement with our semi-empirical calculations. The higher magnitude of the 2PA cross-section, in comparison with single azoaromatics, demonstrates the positive effect of increasing conjugation. The decrease of 2PA cross-section with temperature is attributed to thermally induced torsions, which decreases the effective conjugation of diazoaromatic molecules. © 2008 Elsevier B.V. All rights reserved.4634-6360363Prasad, P.N., Willians, D.J., (1991) Introduction to Nonlinear Optical Effects in Molecules and Polymers, , Wiley Interscience, New YorkKawata, S., Sun, H.B., Tanaka, T., Takada, K., (2001) Nature, 412, p. 697Sun, H.B., Kawata, S., (2004) Advances in Polymer Science: NMR - 3D Analysis - Photopolymerization, , Springer-Verlag, Berlin p. 169Kawata, S., Kawata, Y., (2000) Chem. Rev., 100, p. 1777Mendonca, C.R., (2007) Opt. Commun., 273, p. 435Belfield, K.D., Ren, X., Van Stryland, E.W., Hagan, D.J., Dubikovski, V., Meisak, E.J., (2000) J. Am. Chem. Soc., 122, p. 1217Denk, W., Strickler, J.H., Webb, W.W., (1990) Science, 248, p. 73Kohler, R.H., Cao, J., Zipfel, W.R., Webb, W.W., Hansen, M.R., (1997) Science, 276, p. 2039Bhawalkar, J.D., He, G.S., Prasad, P.N., (1996) Rep. Prog. Phys., 59, p. 1041Herman, B., Wang, X.F., Wodnicki, P., Perisamy, A., Mahajan, N., Berry, G., Gordon, G., (1999) Applied Fluorescence in Chemistry Biology and Medicine, p. 496. , Retting B.S.W., Schrader S., and Seifert H. (Eds), Springer, New YorkZhou, G.Y., Wang, C., Lei, H., Wang, D., Shao, Z.S., Jiang, M.H., (2001) Chin. Phys. Lett., 18, p. 1120Oliveira, S.L., Correa, D.S., Misoguti, L., Constantino, C.J.L., Aroca, R.F., Zilio, S.C., Mendonca, C.R., (2005) Adv. Mater., 17, p. 1890Albota, M., (1998) Science, 281, p. 1653Belfield, K.D., Hagan, D.J., Van Stryland, E.W., Schafer, K.J., Negres, R.A., (1999) Org. Lett., 1, p. 1575Morel, Y., Stephan, O., Andraud, C., Baldeck, P.L., (2001) Synth. Met., 124, p. 237Wang, X.M., Wang, D., Zhou, G.Y., Yu, W.T., Zhou, Y.F., Fang, Q., Jiang, M.H., (2001) J. Mater. Chem., 11, p. 1600Reinhardt, B.A., (1998) Chem. Mater., 10, p. 1863Rochon, P., Gosselin, J., Natansohn, A., Xie, S., (1992) Appl. Phys. Lett., 60, p. 4Jiang, X.L., Li, L., Kumar, J., Kim, D.Y., Shivshankar, V., Tripathy, S.K., (1996) Appl. Phys. Lett., 68, p. 2619Jager, M., (1998) J. Opt. Soc. Am. B-Opt. Phys., 15, p. 781Cherioux, F., Audebert, P., Maillotte, H., Grossard, L., Hernandez, F.E., Lacourt, A., (1997) Chem. Mater., 9, p. 2921De Boni, L., (2002) Chem. Phys. Lett., 361, p. 209Antonov, L., Kamada, K., Ohta, K., Kamounah, F.S., (2003) Phys. Chem. Chem. Phys., 5, p. 1193De Boni, L., Misoguti, L., Zilio, S.C., Mendonca, C.R., (2005) ChemPhysChem, 6, p. 1121Neves, U.M., De Boni, L., Ye, Z.H., Bu, X.R., Mendonca, C.R., (2007) Chem. Phys. Lett., 441, p. 221De Boni, L., Piovesan, E., Misoguti, L., Zilio, S.C., Mendonca, C.R., (2007) J. Phys. Chem. A, 111, p. 6222Sheik-Bahae, M., Said, A.A., Wei, T.H., Hagan, D.J., Van Stryland, E.W., (1990) IEEE J. Quant. Electron., 26, p. 760Correa, D.S., De Boni, L., Misoguti, L., Cohanoschi, I., Hernandez, F.E., Mendonca, C.R., (2007) Opt. Commun., 277, p. 440Franken, P.A., Ward, J.F., (1963) Rev. Mod. Phys., 35, p. 23Orr, B.J., Ward, J.F., (1971) Mol. Phys., 20, p. 513Kamada, K., Ohta, K., Yoichiro, I., Kondo, K., (2003) Chem. Phys. Lett., 372, p. 386Mazumdar, S., Guo, D.D., Dixit, S.N., (1993) Synth. Met., 57, p. 3881Dirk, C.W., Cheng, L.T., Kuzyk, M.G., (1992) Int. J. Quant. Chem., 43, p. 27Birge, R.R., Pierce, B.M., (1979) J. Chem. Phys., 70, p. 165Rumi, M., (2000) J. Am. Chem. Soc., 122, p. 9500Zojer, E., Beljonne, D., Kogej, T., Vogel, H., Marder, S.R., Perry, J.W., Bredas, J.L., (2002) J. Chem. Phys., 116, p. 3646Kogej, T., Beljonne, D., Meyers, F., Perry, J.W., Marder, S.R., Bredas, J.L., (1998) Chem. Phys. Lett., 298, p. 1Andrade, A.A., Yamaki, S.B., Misoguti, L., Zilio, S.C., Atvars, T.D.Z., Oliveira, O.N., Mendonca, C.R., (2004) Opt. Mater., 27, p. 441Day, P.N., Nguyen, K.A., Pachter, R., (2005) J. Phys. Chem. B, 109, p. 1803Bicknell, R.T.M., Davies, D.B., Lawrence, K.G., (1982) J. Chem. Soc.-Faraday Trans. I, 78, p. 159