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They performed a chemical treatment in the aerogels by vapor deposition of trimethylchlorosilane. The aerogels presented an adsorption capacity ranging from 11 to 22 g x [g.sup.-1] for motor oil and organic solvents such as chloroform, for example.
The solutions were evaporated to dryness, derivatized with 500 [micro]L of a 1:3:9 (v/v/v) trimethylchlorosilane : hexamethyldisilazane : pyridine solution, and analyzed by GC.
Trimethylchlorosilane (TMCS) * Commonly used as a catalyst
So far, organic silicon monomers, such as tetramethylorthosilicate (TMOS), tetraethyl orthosilicate (TEOS), and polyethoxydisiloxane (PEDS), are generally selected as precursors [4, 7, 8] and the trimethylchlorosilane (TMCS) [9,10], hexamethyldisiloxane (HMDSO) [11], and hexamethyldisilazane (HMDS) [7, 9,12] were used for silylating silica gels, and aerogels were dried under ambient pressure conditions.
Hence, N-methyl-N-(tert-butyldimethylsilyl)trifluoroacetamide (MTB STFA) [24], N,O-bis(trimethylsiliyl)trifluoroacetamide (BSTFA) [27], BSTFA + trimethylchlorosilane (TMCS) (10:1) [29], BSTFA+TMCS (99:1) [13, 21, 30] have been used as silylating reagents while trimethyloxonium tetrafluoroborate has been used as a methylating agent [25, 26].
To provide 2D nanomold with good antisticking surface properties, an antiadhesive layer was deposited using trimethylchlorosilane. Finally, the 2D PET nanochannels with dimensions of around 80 nm in width, 250 nm in depth and 4 mm in length, shown in Fig.
ASG standard was purchased from Matreya (USA), while those of GABA, oryzanol, and phenolics and streptozotocin (STZ), Tris-EDTA (TE) buffer solution, N,O-bis(trimethylsilyl)trifluoroacetamide with 1% trimethylchlorosilane (BSTFA + 1% TMCS), RPMI 1640 medium, fetal bovine serum, and antibiotic were purchased from Sigma-Aldrich.
Bis(trimethylsilyl)trifluoroacetamide (BSTFA), trimethylchlorosilane (TMCS) and pyridine were used as silylation reagents.
Trimethylsilane was prepared according to the procedure in the literature [27] from trimethylchlorosilane by reduction with LiAl[H.sub.4].
In some of these reported methods, silica particles are produced by passing sodium silicate through ion-exchange resin and subsequent surface modification using trimethylchlorosilane, after exchanging the aqueous solution with organic solvent.
N, O-bis(trimethyl)silyltrifluoroacetamide, BSTFA, (150[micro]l) containing 1% trimethylchlorosilane (TMC) were added to each tube and heated at 60[degrees]C for 30 minutes.
Electrodes were silanized in batches of five by selectively exposing the ion-selective barrel to saturated trimethylchlorosilane (Pierce, Rockford, IL) vapor at room temperature for 1 min and baking them in a 250 [degrees]C oven for 1 h.