TY - JOUR ID - 10442/12543 A1 - Zalesny, R. A1 - A1 - Loboda, O. A1 - A1 - Iliopoulos, K. A1 - A1 - Chatzikyriakos, G. A1 - A1 - Couris, S. A1 - A1 - Rotas, G. A1 - A1 - Tagmatarchis, N. A1 - A1 - Avramopoulos, A. A1 - A1 - Papadopoulos, M. G. Y1 - 2010/// T1 - Linear and nonlinear optical properties of triphenylamine-functionalized C-60: insights from theory and experiment JF - Physical Chemistry Chemical Physics VL - 12 IS - 2 SN - 1463-9076 U3 - 10.1039/b917825b PB - Royal Society of Chemistry SP - 373–381EP - UR - https://hdl.handle.net/10442/12543 N2 - In the present study we report on the linear and nonlinear optical properties of C-60-triphenylamine (TPhA) hybrids. The synthesized materials were prepared following the 1,3-dipolar cycloaddition of azomethine ylides onto the skeleton of C-60 forming the TPhA-based monoadduct, equatorial bis-adduct and dumbell C-60. Complementary spectroscopic techniques, such as NMR, MALDI-TOF-MS, and ATR-IR are applied for the structural characterization of the hybrid materials, while intermolecular electronic interactions are investigated by UV-Vis measurements. In all considered cases, C-60 serves as an acceptor while the triphenylamine unit is chosen as a donor. In order to investigate the dependence of the second-order hyperpolarizability on the architecture of the systems (D-A, A-D-A) we use a Z-scan technique employing 532 nm, 35 ps laser pulses. We have found that the total second-order hyperpolarizability of the C-60-TphA-C-60 system is several times larger than that of TPhA-C-60. The results of experimental measurements are supported by quantum-chemical calculations. ER -