Large Third-Order Optical Nonlinearity of Self-Assembled Porphyrin Oligomers
Journal of the American Chemical Society2001Vol. 124(1), pp. 22–23
Citations Over TimeTop 10% of 2001 papers
Abstract
Third-order nonlinear optical properties of two series of self-assembled porphyrin wires, one being terminated by zinc porphyrin and the other by free base porphyrin, were measured by femtosecond time-resolved optical Kerr effect. The hyperpolarizability values of the latter series were extremely large ranging from 10-30 to 10-29 esu, 10 times larger than the former. The behavior is accounted for by the contribution of terminal free base porphyrin to enhance the molecular polarization by acceptor nature toward central metalloporphyrin array.
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