Controlled porous glasses

The activation of the 5 -hydroxy group of synthetic deoxyoligonucleotides on a controlled porous glass support was achieved with CDI to give a 5 -imidazolide, which was subsequently converted with hexamethylenediamine to yield as the carbamate a 5 -aminoalkylated supported deoxynucleotide.t206]... 

Figures 11.1 and 11.2 illustrate mercury porosimetry data of a bimodal size distribution. However, other types of less typical curves are often encountered. For example, samples of controlled porous glass exhibit intrusion-extrusion curves illustrated by Fig. 11.3, in which all the pores are essentially of one radius.

Vardya and Hester used their OEX model in a constrained linear optimi2ation procedure, based on the Box-Complex method which is essentially a constrained simplex minimization technique. The method does not require derivatives of the object function and is not subject to scaling problems. As an example. Fig. 8 shows a de-convolution of a chromatogram of Dextran T-2000 with water as the mobile phase in a controlled porous glass column. The badly fused peaks are successfully deconvoluted. 

Figure 6.3. Fractal plots for the adsorption of organic vapours on the silica gel and a controlled porous glass (after Faiin et al., 1985 and Christensen and Topsoe, 1987) part of Fig. 1, Farin and Avnir, 1989.

Grand Canonical Monte Carlo simulation is used to investigate the properties of water (fluid of most importance) confined in mesoporous Controled Porous Glass (Vycor-like) numerically obtained by the off-lattice method developed by P. Levitz [Adv. Coll. Int. Sci. 76-77 (1998), 71]. We first outline the interaction model and give the adsorption isotherm obtained at 300 K. Good agreement is found with available experimental results. 

Adsorption of Argon and Xenon in Silica Controlled Porous Glass A Grand Canonical Monte-Carlo Study... 

Other chromatographic materials, such as Control Porous Glass (C.P.G, Coming glass or Electro Nucleonics), which can support the very high pressures (more than 100 bars) are perhaps suitable. 

Oligonucleotide encoding was reported by-Nielsen and colleagues [19], who used the construct presented in Fig. 2. a-Amino functionality of the serine residue was used as an attachment point for the growing peptide chain, while the (3-hydroxyl of the side chain was used for the encoding oligonucleotide assembly. Therefore, the tag-to-peptide ratio used in this work was 1 1. Synthesis was carried out on controlled porous glass (CPG) beads. 

Fig. 2.18. The dielectric-loss peak frequency /p versus lOOO/T for bulk PDMS and PDMS confined in controlled porous glass with various average pore sizes as indicated. From Schonhals et al. by permission [147].

Dawidowicz AL, Nazimek D, Pikus S, Skubiszewska J (1984) The influence of boron atoms on the surface of controlled porous glasses on the properties of the carbon deposit obtained by pyrolysis of alcohol. J Anal Appl Pyrolysis 7 53-63 Dawidowicz AL, Pikus S, Nazimek D (1986) Properties of the material surfaces obtained by pyrolysis of alkanols on boron-enriched controlled porous glass. J Anal Appl Pyrolysis 10 59-69... 

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