Nonlinear optics of conjugated polymers

Sinclair, Michael B.; McBranch, D.; Moses, D.; Heeger, A.J.

doi:10.1016/0379-6779(89)90756-x

Cited by 70 publications

(4 citation statements)

References 10 publications

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“…Polyacetylene [PA, with generic formula (CH) x ] itself was also a very interesting example, especially due to the presence of the two isomeric forms cis and trans . A comparison of χ (3) in the two isomers indicates that the third-order susceptibility of cis -(CH) x is more than 1 order of magnitude smaller than that of trans- (CH) x .…”

Section: Organic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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Section: Organic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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“…Because of this nonresonant origin, the nonlinearity is very fast with subpicosecond response times [120].…”

Section: Nonlinear Optical Propertiesmentioning

confidence: 99%

Processable Conducting Poly(3-Alkylthiopenes)

Gustafsson

Inganäs

Salaneck

et al. 1991

Conjugated Polymers

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ABSTRACf. The poly(3-alkylthiophenes) represent a new generation of conducting polymers, that exhibit both solution and melt processability. These properties open new possibilities for the utilization of conducting polymers in practical applications. Furtheonore, the solubility of these polymers enables the characterization of the physical and chemical structure in greater detail than hitherto have been possible. In this chapter we give a brief review of the synthetic routes to the poly(3-alkylthiophenes) as well as an overview of some of the recent results on the physical and chemical characterization of this class of materials. In this overview we include results on stability properties, transport properties, thermo-and solvatochromism. We also discuss some aspects of the utilization of the poly(3-alkylthiophenes) in applications.

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“…Since the pioneering work of Wegner on the solid-state polymerization of diacetylenes in the late 1960s and early 1970s, polydiacetylene (PDA) chemistry and physics have become an integral part of modern polymer science. − The polymerization reaction of diacetylenes (DAs) has apart from solid-state reactions in single crystals also been applied to organized molecular systems such as model biomembranes, − tubules, and liquid crystals. , In this respect PDAs are one of the most systematically studied groups of materials. The large interest toward PDAs originates from their unique optical, mechanical, and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Polymerization of Modified Diacetylenes in Langmuir Films

et al. 2000

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The polymerization of a series of diacetylene Langmuir monolayers modified in the hydrophobic as well as in the hydrophilic part of the molecule was studied by measuring the kinetic changes of the mean molecular area and UV-vis spectra. The polymerization properties of the monolayers were dependent on the position of the diacetylenic unit and whether an ester or sulfonyl group was introduced in the hydrocarbon chain. The substances containing a sulfonyl group showed the highest polymerization activity. The blueto-red transition usually observed for diacetylenes in Langmuir and Langmuir-Blodgett films due to UV irradiation was not observed, instead the studied substances formed directly a red form polydiacetylene. A first-order consecutive reaction kinetic model with a steady-state approximation was successfully adapted to the experimental results of three of the studied compounds.

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Nonlinear optics of conjugated polymers

Cited by 70 publications

References 10 publications

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Processable Conducting Poly(3-Alkylthiopenes)

Polymerization of Modified Diacetylenes in Langmuir Films

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