Hexamethyldisilathiane

So, Jeung‐Ho; Boudjouk, Philip; Hong, Harry H.; Weber, William P.

doi:10.1002/9780470132609.ch11

Cited by 28 publications

(17 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stable isotope-labeled sodium sulfide (Na 2 36 S) was synthesized according to the literature 47 . Briefly, the 36-sulfur powder, sodium, naphthalene, and tetrahydrofuran (THF) were mixed and then refluxed for 12 h; at that time, the color of the mixture changed from yellow to white.…”

Section: Methodsmentioning

confidence: 99%

New method for quantification of gasotransmitter hydrogen sulfide in biological matrices by LC-MS/MS

Tan

Jin

Sun

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Hydrogen sulfide exists widely in mammalian tissues and plays a vital role in physiological and pathophysiological processes. However, striking differences with orders of magnitude were observed for the detected hydrogen sulfide concentrations in biological matrices among different measurements in literature, which lead to the uncertainty for examination the biological relevance of hydrogen sulfide. Here, we developed and validated a liquid chromatography- mass spectrometry (LC-MS/MS) method for the determination of hydrogen sulfide in various biological matrices by determination of a derivative of hydrogen sulfide and monobromobimane named sulfide dibimane (SDB). 36S-labeled SDB was synthesized and validated for using as an internal standard. This method has been successfully used to measure hydrogen sulfide levels in a broad range of biological matrices, such as blood, plasma, tissues, cells, and enzymes, across different species. Moreover, a novel mode that hydrogen sulfide could loosely and non-covalently bind to human serum protein (HSA) and hemoglobin (HB) was revealed by using the developed method.

show abstract

Section: Methodsmentioning

confidence: 99%

New method for quantification of gasotransmitter hydrogen sulfide in biological matrices by LC-MS/MS

Tan

Jin

Sun

et al. 2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Me 3 Si-S-SiMe 3 is very labile, undergoing rapid degradation simply in the presence of water (vapor) to form H 2 S and Me 3 SiOH. 27 By contrast, the hydrolysis of silicone-based thio ethers was much less facile. Alcoholysis of 3 (Fig.…”

Section: Reduction Of Used Automotive Rubbersmentioning

confidence: 99%

Dissolving used rubber tires

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The thiol starting material, initially protected as a silyl sulfide SiS , was recovered after deprotection. While a report suggests that the hydrolysis of Si–S bonds should be very facile, based on observations with Me 3 SiSSiMe 3 , [ 25 ] we found it was necessary to hydrolyze the SiS products in water/isopropanol (IPA) [ 13,26 ] to regenerate the thiol; the byproduct linear tetrasiloxane, which is perceived to be safer in use than related cyclic tetrasiloxanes, was removed by evaporation (Figure 1C and Figure S5, Supporting Information). The 1 H NMR spectra of the recovered oils were identical to the thiopropyl silicone starting materials (Figure S9, Supporting Information).…”

Section: Figurementioning

confidence: 99%

Reversible Redox Crosslinking of Thiopropylsilicones

Zheng

Brook

2020

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Most silicone elastomers are thermosets. As a response to the new paradigm of polymer recyclability, the development of silicone elastomers that can be reversibly and repeatedly cured and uncrosslinked using redox conditions is reported. Thiopropyl‐modified silicones are oxidized to elastomers with disulfide crosslinks using the organosoluble oxidant PhI(OAc)2. As with any elastomer, mechanical properties can be tuned by varying crosslink density. Thermal stabilities in air show that the products are comparable to traditional silicone thermosets, with degradation only starting over 300 °C. Uncrosslinking back to the same thiopropyl‐modified silicones involves reductive S–S bridge cleavage using a Piers–Rubinsztajn reaction with hydrosilanes catalyzed by B(C6F5)3; HSiMe2OSiMe3 is identified as a convenient reducing agent. The initially formed silicone‐(CH2)3S‐SiMe2OSiMe3 products need deprotection with water in isopropanol/water to completely regenerate the thiopropylsilicones. This oxidation/reduction crosslinking/uncrosslinking cycle is practiced thrice, with a yield of 89% per cycle, with essentially no change in the Young's moduli of the elastomers, or 1H NMR spectra of the uncrosslinked fluids after reduction. Further oxidation of disulfide groups on the elastomer surface permanently and significantly improved water wettability.

show abstract

Hexamethyldisilathiane

Cited by 28 publications

References 15 publications

New method for quantification of gasotransmitter hydrogen sulfide in biological matrices by LC-MS/MS

New method for quantification of gasotransmitter hydrogen sulfide in biological matrices by LC-MS/MS

Dissolving used rubber tires

Reversible Redox Crosslinking of Thiopropylsilicones

Contact Info

Product

Resources

About