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.
(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) , 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) , N,O-bis(trimethylsiliyl)trifluoroacetamide (BSTFA) , BSTFA + trimethylchlorosilane
(TMCS) (10:1) , 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  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.