ORMOCHALCs: organically modified chalcogenide polymers for infrared optics

Boyd, Darryl A.; Baker, Colin; Myers, Jason D.; Nguyen, Vinh; Drake, Gryphon; McClain, Collin; Kung, Frederic H.; Bowman, S. R.; Kim, W.; Sanghera, Jasbinder S.

doi:10.1039/c6cc08307b

Cited by 56 publications

(55 citation statements)

References 16 publications

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“…There is interest in the opticalp roperties of sulfur polymers due to their high transmission to infrared light, allowing thermal imaging applications, as well as their high refractive index. [5,6,36] For both of these applications,w hilen ot always necessary,ag reater degree of transparency in the visible light range may be beneficial. By doping DCPD into the sulfur-terpinolenep olymer it was possible to improvet he physicalp roperties to allow use (10 wt.…”

Section: Resultsmentioning

confidence: 99%

Crosslinker Copolymerization for Property Control in Inverse Vulcanization

Smith

Green

Petcher

et al. 2019

Chemistry A European J

105

117

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Sulfur is an underused by-product of the petrochemicals industry.R ecent research into inverse vulcanization has shown how this excesss ulfur can be transformed into functional polymers, by stabilization with organic crosslinkers. For these interesting new materials to realize their potential for applications,m ore understanding and control of their physical properties is needed. Here we report four new terpolymers prepared from sulfur and two distinct alkene monomers that can be predictively tuned in glass transition, molecular weight, solubility,m echanical properties, and color.

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Section: Resultsmentioning

confidence: 99%

Crosslinker Copolymerization for Property Control in Inverse Vulcanization

Smith

Green

Petcher

et al. 2019

Chemistry A European J

105

117

View full text Add to dashboard Cite

show abstract

“…The inverse vulcanization allowed repurposing of sulfur, a multi‐million‐ton side product of oil and natural gas refining, to form polymeric materials . These materials have been shown to be inexpensive and useful in applications such as infrared optics, catalysis, Li‐sulfur batteries, pollutant remediation, antibacterial surfaces, templates, healable materials, fertilizers, adhesives, or as insulators . With the aid of catalysts or the so‐called dynamic covalent polymerization, the monomer (i.e.…”

Section: Introductionmentioning

confidence: 99%

Inverse Vulcanization of Styrylethyltrimethoxysilane–Coated Surfaces, Particles, and Crosslinked Materials

et al. 2020

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Sulfur as a side product of natural gas and oil refining is an underused resource. Converting landfilled sulfur waste into materials merges the ecological imperative of resource efficiency with economic considerations. A strategy to convert sulfur into polymeric materials is the inverse vulcanization reaction of sulfur with alkenes. However, the materials formed are of limited applicability, because they need to be cured at high temperatures (> 130 8C) for many hours. Herein, we report the reaction of elemental sulfur with styrylethyltrimethoxysilane. Marrying the inverse vulcanization and silane chemistry yielded high sulfur content polysilanes, which could be cured via room temperature polycondensation to obtain coated surfaces, particles, and crosslinked materials. The polycondensation was triggered by hydrolysis of poly(sulfur-r-styrylethyltrimethoxysilane) (poly(S n-r-StyTMS) under mild conditions (HCl, pH 4). For the first time, an inverse vulcanization polymer could be conveniently coated and mildly cured via post-polycondensation. Silica microparticles coated with the high sulfur content polymer could improve their Hg 2+ ion remediation capability.

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“…The development of methods for converting elemental sulfur into ac opolymer with organic linking groups offers new opportunities for the use of the excess of elemental sulfur produced in the oil refining and natural gas purification processes. [1][2][3] Through this chemical conversion, the materialb ecomes soluble in av ariety of organic solvents and therefore offers opportunities for facile fabrication of thin film materials with potential applicationsi nb atteries, [1,3,4] infrareds ensors [3,5] and solar cells. [6,7] The processing of elemental sulfur into ac opolymer with ab ackboneo fs ulfur-sulfur bonds andc ross-linking with organic molecules was termed "inverse vulcanization".…”

Section: Introductionmentioning

confidence: 99%

Electronic Structure Characterization of Cross‐Linked Sulfur Polymers

et al. 2018

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Cross-linked polymers of elemental sulfur are of potential interest for electronic applications as they enable facile thin-film processing of an abundant and inexpensive starting material. Here, we characterize the electronic structure of a cross-linked sulfur/diisopropenyl benzene (DIB) polymer by a combination of soft and hard X-ray photoelectron spectroscopy (SOXPES and HAXPES). Two different approaches for enhancing the conductivity of the polymer are compared: the addition of selenium in the polymer synthesis and the addition of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) during film preparation. For the former, we observe the incorporation of Se into the polymer structure resulting in a changed valence-band structure. For the latter, a Fermi level shift in agreement with p-type doping of the polymer is observed and also the formation of a surface layer consisting mostly of TFSI anions.

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ORMOCHALCs: organically modified chalcogenide polymers for infrared optics

Cited by 56 publications

References 16 publications

Crosslinker Copolymerization for Property Control in Inverse Vulcanization

Crosslinker Copolymerization for Property Control in Inverse Vulcanization

Inverse Vulcanization of Styrylethyltrimethoxysilane–Coated Surfaces, Particles, and Crosslinked Materials

Electronic Structure Characterization of Cross‐Linked Sulfur Polymers

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