Optical nonlinearity of conjugated polymers

Sugiyama, Tsunetoshi; Wada, Takehiko; Sasabe, Hiroyuki

doi:10.1016/0379-6779(89)90541-9

Cited by 55 publications

(12 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Typical refractive indices for organic polymers are between 1.3 and 1.7 83) . Isotropic refractive indices around 2.1, found e. g. for poly(thiophene) or aromatic poly-(imide)s [84][85][86] , are extraordinarily high for polymers. The theoretical lower limit of the refractive index of organic polymers has been estimated to be close to 1.29 87) .…”

Section: Nanocomposites With Extreme Refractive Indicesmentioning

confidence: 99%

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Caseri¹

2000

Macromol. Rapid Commun.

536

335

View full text Add to dashboard Cite

Upon transmission of visible light through composites comprising of a transparent polymer matrix with embedded particles, the intensity loss by scattering is substantially reduced for particle diameters below 50–100 nm (nanoparticles, nanosized particles). As a consequence, related materials (nanocomposites) have found particular interest in optical studies. The first part of this article deals with a historical survey on nanoparticles and nanocomposites and the importance of small particle sizes on their optical properties. The second part focuses on results from our laboratory concerning nanocomposites with extremely high or low refractive indices and dichroic nanocomposites and their application in bicolored liquid crystal displays (LCD). The inorganic colloids required for these studies (lead sulfide, iron sulfides, gold, and silver) were prepared in situ in presence of a polymer or isolated as redispersable metal colloids modified at the surface with a self‐assembled monolayer (SAM) of an alkanethiol. The nanocomposites themselves were finally obtained by coprecipitation, spin coating, solvent casting or melt extrusion, with poly(ethylene oxide), gelatin, poly(vinyl alcohol) and polyethylene as matrix polymers.

show abstract

Section: Nanocomposites With Extreme Refractive Indicesmentioning

confidence: 99%

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Caseri¹

2000

Macromol. Rapid Commun.

536

335

View full text Add to dashboard Cite

show abstract

“…However, it has been a longstanding challenge to increase the refractive index of organic polymeric materials, which typically exhibit low values ( n ∼ 1.5–1.6) . While the preparation of high n -polymers or polymer composites has been conducted, these materials typically exhibit high n -values with concomitant optical absorption or exhibit high optical losses. − Hence, there remains a strong need for new polymeric materials that exhibit very high refractive indices ( n > 1.75), low optical losses and possess high IR transparency.…”

mentioning

confidence: 99%

High Refractive Index Copolymers with Improved Thermomechanical Properties via the Inverse Vulcanization of Sulfur and 1,3,5-Triisopropenylbenzene

et al. 2016

View full text Add to dashboard Cite

6. Dynamic rheological frequency analysis of poly(sulfur-r-1,3diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5triisopropenylbenzene) (poly(S-r-TIB)) copolymers 7. Dynamic mechanical Analysis of of poly(sulfur-r-1,3diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5triisopropenylbenzene) (poly(S-r-TIB)) copolymers 8. Time resolved rheological analysis of self-healing properties of poly(sulfur-r-1,3-diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5-triisopropenylbenzene) (poly(S-r-TIB)) 9. Mechanical analysis of poly(sulfur-r-1,3-diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5-triisopropenylbenzene) (poly(S-r-TIB)) copolymers 10. Plot of refractive Index as a function of wavelength for poly(sulfur-r-1,3,5-triisopropenylbenzene) (poly(S-r-TIB)) copolymers 11. FTIR and UV-Vis transmission plots of poly(sulfur-r-1,3,5triisopropenylbenzene) (poly(S-r-TIB)) copolymers 12. Differential scanning calorimetry (DSC) analysis of poly(sulfur-r-1,3diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5triisopropenylbenzene) (poly(S-r-TIB)) copolymers 13. Thermogravimetric analysis (TGA) of poly(sulfur-r-1,3,5triisopropenylbenzene) (poly(S-r-TIB)) and poly(sulfur-r-1,3diisopropenylbenzene) (poly(S-r-DIB))copolymers II) Results and Discussion Section A. Dynamic rheological frequency analysis of poly(sulfur-r-1,3diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5triisopropenylbenzene) (poly(S-r-TIB)) copolymers to determine degree of crosslinked network microstructures B. Time resolved rheological analysis of self-healing properties of poly(sulfur-r-1,3-diisopropenylbenzene) (poly(S-r-DIB)) and poly(sulfur-r-1,3,5-triisopropenylbenzene) (poly(S-r-TIB)) copolymers C. Powder X-Ray Diffraction (XRD) of poly(sulfur-r-TIB) copolymers

show abstract

“…The fundamental (1064 nm) of a Q-switched Nd:YAG laser was converted to 1907 nm and 1543nm by Raman shifting through high pressure hydrogen and methane cells, respectively [10]. The transmitted third harmonics (636 and 514 rim) from the sample films and the reference of a fused silica plate were selected by a monochromator and detected by a photomultiplier tube (PMT).…”

Section: Thg Measurementmentioning

confidence: 99%

Third Order Optical Nonlinearity of Soluble Polythiophenes

et al. 1990

View full text Add to dashboard Cite

Soluble conjugated polymers, poly (3-alkylthiophene)s were prepared by chemically oxidative polymerization. The polymers had no absorption at wavelengths longer than 600 nm, indicating that the polymers were suitable for waveguide structures. Dispersion of refractive index (real and imaginary parts) was calculated from the reflectance data using the Kramers-Kronig relation.The dispersion agreed with the result obtained by ellipsometry. Third order optical nonlinearity, x (3)(-3o); w, w, w), of the polymers was determined by optical third harmonic generation (THG).Enhancement of the X (3) by three photon absorption was observed when a beam of 1.54 Aim was used as a fundamental.Also, light propagation properties were investigated by using slab waveguides of the polymers.

show abstract

Optical nonlinearity of conjugated polymers

Cited by 55 publications

References 9 publications

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

High Refractive Index Copolymers with Improved Thermomechanical Properties via the Inverse Vulcanization of Sulfur and 1,3,5-Triisopropenylbenzene

Third Order Optical Nonlinearity of Soluble Polythiophenes

Contact Info

Product

Resources

About