Oxidative enhancement of the χ(3) values of solutions of cis-Mo(CO)4L2 (L=PPh3, AsPh3, PPh2Np) complexes as measured by DFWM

Sun, Wei‐Yin; Byeon, Clare Chisu; McKerns, Michael; Lawson, Christopher M.; Dunn, J.; Hariharasarma, Maheswaran; Gray, Gary M.

doi:10.1016/s0925-3467(98)00017-2

Cited by 5 publications

(1 citation statement)

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“…This approach has the added advantage that substitution of the polythiophene by a metal complex may modify the optoelectronic properties of polythiophene. We and others have demonstrated that polythiophene groups may be incorporated into transition metal complexes via functionalization of the polythiophenes with phosphines followed by coordination of the phosphine groups to the transition metals. − ,− We have recently used this approach to prepare both oligomeric complexes with phosphine-substituted bithiophenes and monomeric complexes with similar ligands that were models for the corners and edges in the oligomers . The complexes exhibited high solubilities, but the bithiophene groups contained too few thiophenes to exhibit interesting optoelectronic properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Transition Metal Systems Containing Phosphino-Oligothiophene Ligands for Nonlinear Optical Materials

Myrex¹,

Gray²,

Spivey³

et al. 2006

Organometallics

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Polythiophenes exhibit interesting third-order nonlinear optical properties but poor solubilities. Incorporating polythiophenes into transition metal complexes should yield readily soluble materials, and the transition metal substituent may alter third-order nonlinear optical properties of the polythiophene. In this paper, we report the synthesis and characterization of 2-diphenylphosphinothianaphthene, A, and its trans-PdCl 2 L 2 , B, and cis-PtCl 2 L 2 , C, analogues. Additionally 2-diphenylphoshino-5:2′,5′:2′′-terthiophene, D, its trans-PdCl 2 L 2 complex, E, both first prepared by Wolf, 25 the previously unprepared cis-PtCl 2 L 2 analogue, F, and the oxide of A, G, were prepared and investigated for nonlinear optical (NLO) behavior. No appreciable third-order NLO behavior was observed for A, D, or G. However both E and F exhibited nonlinear refraction, as shown by Z-scan measurements, and nonlinear absorption. The nonlinear absorption was significantly stronger for E, indicating that the metal center has a significant affect on nonlinear absorption. This is the first reported observation of this type of nonlinear behavior in metalphosphinothiophene systems.

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