Third-order optical nonlinearity of chlorin derivatives
β Scribed by Bhanu P. Singh; R. Vijaya; T. Kundu; K. Kandasamy; P. N. Puntambekar; Shankar J. Shetty; T. S. Srivastava
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 65 KB
- Volume
- 05
- Category
- Article
- ISSN
- 1088-4246
- DOI
- 10.1002/jpp.333
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β¦ Synopsis
Second-order molecular hyperpolarizabilities (Ξ³) of four tetraphenylchlorin derivatives were measured by the Z -scan technique at 784 nm in the off-resonant region and the enhancement in the hyperpolarizabilities of these derivatives in comparison to the regular porphyrins with the same external side-groups is explained on the basis of the difference in their Q-band oscillator strengths.
π SIMILAR VOLUMES
The thirdarder microscopic hyperpolarizability y is calculated for finite bridged polymers of the form A-B-A-B-... using simple model Hamiltonians. Generally, the even-and odd-numbered chains show markedly different behavior, with the addition or subtraction of one chain unit resulting in a predicte
## Abstract Poly(1,4βphenylenevinylene) (PPV) and its derivatives are readily processable and thermally stable polyconjugated polymers. Since PPV contains phenylene units, its structure can be easily altered and modified in the electronic structure. Moreover, PPV and the derivatives are easily prep