𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Modeling solvation on the chemically modified silica surfaces

✍ Scribed by Bogusław Buszewski; Szymon Bocian; Alicja Nowaczyk

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
301 KB
Volume
33
Category
Article
ISSN
1615-9306

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A detailed molecular‐level description of the retention mechanism in RP‐HPLC is a point of great interest to analytical chemists. For this purpose, the solvent adsorption on the octadecyl stationary‐bonded phase was investigated. Preferential adsorption of solvents from the acetonitrile–water mobile phase was modeled on the silica surface with one, two, three and four organic ligands, which represents a series of non‐end‐capped‐bonded phases with different coverage density of bonded ligands. As a result of the computer simulation, the increase of adsorbed acetonitrile around bonded ligands is observed. The number of water molecules near the modeled surface is observed as well. The results are in agreement with experimental measurement of acetonitrile excess adsorption isotherms on the series of in‐house made stationary‐bonded phase.

📜 SIMILAR VOLUMES

Ion sorption on modified silica surface
Ion sorption on modified silica surface
✍ Gennadii V Kudryavtsev; Dmitrii V Miltchenko; Vladimir V Yagov; Alexei A Lopatki 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 647 KB
Ag+-sensitive ISFET with a chemically mo
Ag+-sensitive ISFET with a chemically modified silica surface
✍ A. Bouazizi; H. Maaref; N. Jaffrezic-Renault 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 272 KB

An Ag+-sensitive ion-selective field effect transistor (ISLET) is prepared by deposition of the copolymer cyanopropyl methyl (lo-12%)-dimethylsiloxane (88~90%) on the silica gate insulator. The corresponding REFET (reference field effect transistor) is prepared by deposition of polymethyl hexyl silo

The electrochemistry of carbon and chemi
The electrochemistry of carbon and chemically-modified carbon surfaces—II
✍ G.W. Murphy; B.B. Arnold 📂 Article 📅 1967 🏛 Elsevier Science 🌐 English ⚖ 927 KB

## Prior concentration-cell experiments with carbon electrodes are reviewed, and the ion responsiveness of several carbon electrodes is evaluated in terms of a newly defined selectivity coefficient. The ion selectivity of the carbon electrode and previously observed potential drifts are interrelat