%0 Journal Article %A Zalesny, Robert%A %A Loboda, Oleksandr%A %A Iliopoulos, K.%A %A Chatzikyriakos, G.%A %A Couris, Stelios%A %A Rotas, Georgios%A %A Tagmatarchis, Nikos%A %A Avramopoulos, Aggelos%A %A Papadopoulos, Manthos G. %D 2010 %T Linear and nonlinear optical properties of triphenylamine-functionalized C-60: insights from theory and experiment %J Physical Chemistry Chemical Physics %V 12 %@ 1463-9076 %R 10.1039/b917825b %I Royal Society of Chemistry %P 373–381 %N 2 %U https://hdl.handle.net/10442/12543 %X 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. %> Αποθετήριο Ήλιος / ΕΙΕ