✦ LIBER ✦

Coverage homogenity of chemically bonded C18phases for HPLC. Investigation of the changes in the free surface energy of the packings

✍ Scribed by P. Staszczuk; B. Buszewski

Book ID: 112730205
Publisher: Springer
Year: 1988
Tongue: English
Weight: 474 KB
Volume: 25
Category: Article
ISSN: 0009-5893
DOI: 10.1007/bf02311422

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Study on the structure of chemically bon

Study on the structure of chemically bonded C18phase for HPLC

✍ B. Buszewski; Z. Suprynowicz 📂 Article 📅 1987 🏛 Springer 🌐 English ⚖ 526 KB

Influence of the porous silica gel struc

Influence of the porous silica gel structure on the coverage density of a chemically bonded C18 phase for high-performance liquid chromatography

✍ Bogusa̵w Buszewski; Dušan Berek; Ján Garaj; Ivan Novák; Zdzisa̵w Suprynowicz 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 777 KB

In high-performance liquid chromatography (HPLC), silica gels are the most often used supports for chemically bonded stationary phases. The influence of the physical (volume and diameter of pores) and chemical (hydroxyl group concentration) structures of various silica gel supports on blocking effec

Changes in surface free energy for the a

Changes in surface free energy for the adsorption of nitrogen on porous powders of alumina and silica coated with manganese oxides

✍ D. Dollimore; J. Pearce 📂 Article 📅 1980 🏛 Elsevier Science ⚖ 467 KB

Electrophilic and oxidative chemistry of

Electrophilic and oxidative chemistry of pyrene and its non-alternant isomers: theoretical (DFT, GIAO-NMR, NICS) study of protonation carbocations and oxidation dications from pyrene, azupyrene (dicyclopenta[ef,kl]heptalene) and dicyclohepta[ed,gh]pentaleneElectronic supplementary information (ESI) available: Table S1: Electronic energies (E), zero point energies (ZPE) and Gibbs free energies (G) obtained from DFT calculations for the studied molecules and cations at B3LYP/6-31G(d) level. Figs. S1, S8 and S10 and Tables S2?S14: Optimized structures and Cartesian coordinates for 1, 1aH+, 1bH22+, 12+, 2, 2aH+, 2aH22+, 22+, 3, 3cH+, 3eH22+ and 32+. Figs. S2, S3 and S4: Computed 13C NMR chemical shifts and NPA-derived charges for 1aH+, 122+ and 12+. Fig. S5: Experimental 13C NMR chemical shifts for 1aH+ and 12+. Figs. S6, S7, and S12: HOMO?LUMO forms in the oxidation dications. Figs. S9 and S11: Bond-lengths in X-ray derived and computed structures for 2 and 3. See http://www.rsc.org/suppdata/ob/b4/b405009f/

✍ Okazaki, Takao; Laali, Kenneth K. 📂 Article 📅 2004 🏛 Royal Society of Chemistry 🌐 English ⚖ 409 KB