12094-24-5Relevant articles and documents
Evans, J. B.,Marr, G.
, (1972)
Synthesis, third-order nonlinear optical properties and theoretical analysis of vinylferrocene derivatives
Jia, Jianhong,Cui, Yanhong,Li, Yujin,Sheng, Weijian,Han, Liang,Gao, Jianrong
, p. 273 - 279 (2013/07/19)
A series of vinylferrocene derivatives were synthesized from the reaction of ferrocenecarboxaldehyde, alcohol, and triphenylphosphonium bromide in a one-pot, solid-state reaction. Their third-order nonlinear optical (NLO) properties were evaluated in N,N-dimethylformamide at 800 nm using femtosecond degenerate four-wave mixing. The third-order NLO susceptibilities of the compounds were 2.55-3.78 × 10-13 esu. The second-order hyperpolarizabilities of the molecules were 2.42-3.60 × 10-31 esu. The response times were 51-98 fs. The energy of the Highest Occupied Molecular Orbital (HOMO), the Lowest Unoccupied Molecular Orbital (LUMO), the energy gap of the HOMO and LUMO (Egap), natural charge, and molecular orbitals are performed by the Density Function Theory (DFT). The DFT study showed that the third-order NLO properties were increased with the increasing electron-withdrawing ability in accordance with the decreasing Egap and the increasing charge transfer among the donor, π-bridge, and the acceptor. The experiment and theoretical results show that the vinylferrocene derivatives have potential nonlinear optical applications.
Optical Nonlinearities of Organometallic Structures: Aryl and Vinyl Derivatives of Ferrocene
Ghosal, Saswati,Samoc, Marek,Prasad, Paras N.,Tufariello, Joseph J.
, p. 2847 - 2851 (2007/10/02)
With an objective to understand the nonlinear optical properties of organometallic structures, various aryl and vinyl derivatives of ferrocene were synthesized and their nonlinear optical properties were investigated by using degenerate four-wave mixing.The molecular second hyperpolarizability γ increases strongly with the length of the conjugated ?-electron system.The results show that effective conjugation is determined predominantly by the length of the aryl-vinyl system; the contribution from the ferrocenyl group is less significant.The d-d resonance of the metal in the ferrocene unit does not appear to make an important contribution to optical nonlinearity.The experimental results on ferrocene are compared with those from a recent theoretical study using semiempirical calculations.Although a qualitative agreement with the theoretical result is found, the experimental value of γ determined by our method is about 4 times larger.Possible sources of such discrepancies are discussed.
