Nonlinear optical organic polymers

Nonlinear optical organic materials such as porphyrins, dyes, and phthalocyanines provide optical limiting properties for photonic devices to control light frequency and intensity in a predictable manner. The optical limit of CNTs composites is saturated at CNTs exceeding 3.8wt% relative to the polymer mass (Chen et al., 2002). Polymer/ CNT composites could also be used to protect human eyes, for example, optical elements, optical sensors, and optical switching (Cao et al., 2002). 

The potential application of organic and polymeric materials, especially glassy polymers, is promising as evidenced by the pertinent material properties. A model nonlinear optical glassy polymer system, combining the large nonlinear susceptibilities of the dopant and favorable optical properties of the host polymer glass, was fabricated and evaluated. The nonlinear optical... 

Recent development of organic nonlinear optical (NLO) polymers has focused on the fabrication of thermally stable NLO materials in which the second order nonlinearity... 

Nalwa, H.S., and S. Miyata, eds. 1997. Nonlinear optics ( organic molecules and polymers. Boca Raton CRC Press. 

Jenekhe, S. A., Chen, W.-C., Lo, S., and Flom, S. R., Large third-order optical nonlinearities in organic polymer superlattices, Appl. Phys. Lett., 57, 126, 1990. 

Nalwa, H. S. Miyata, S., Eds. Nonlinear Optics of Organic Molecules and Polymers 1997, CRC Press Boca Raton, FL. 

Chiang, W. Thompson, M. E. Van Engen, D. Synthesis and Nonlinear Optical Properties of Inorganic Co-ordination Polymers. In Organic Materials for Nonlinear Optics II Hann, R. A., Bloor, D., Eds. Royal Society of Chemistry London, 1991 pp 210-216. 

Aromatic poly(benzothiazole)s are thermally and thermooxidatively stable and have outstanding chemical resistance and third-order nonlinear optical susceptibility. Aromatic poly(benzothiazole)s can be spun into highly-oriented ultrahigh strength and ultrahigh modulus fibers. However, this type of polymer is insoluble in most organic solvents. Therefore, hexafluoroisopropylidene units are introduced in the polymer backbone to obtain soluble or processable aromatic poly(benzothiazole)s. 

P. N. Prasad and D. J. Williams, Introduction to Nonlinear Optical Effects in Organic Molecules and Polymers, Wiley, New York, 1991. 

Polysilanes are cr-conjugated polymers composed of Si-Si skeletons and organic pendant groups. They are insulators with filled intramolecular valence bands and empty intramolecular conduction bands. However, because of strong cr conjugation, they have rather narrow band gaps of less than 4 eV [24,25] and are converted to conductors by photoexcitation or by doping electron donors or acceptors. Recently they have attracted much attention because of their potential utility as one-dimensional conductors, nonlinear optical materials, and electroluminescent materials [26-28]. 

Perry JW (1997) In Nalwa HS, Miyata S (eds) Nonlinear optics of organic molecules and polymers. CRC Press, Boca Raton, p 813... 

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