عنوان المقالة:Synthesis, characterization and applications of polysiloxane networks with immobilized pyrogallol ligands
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 13399
نوع النشر
مجلة علمية
المؤلفون بالعربي
Salman M Saadeh, Nizam M El‐Ashgar, Issa M El‐Nahhal, Mohamed M Chehimi, Jocelyne Maquet, Florence Babonneau
الملخص العربي
A porous, solid insoluble polysiloxane-immobilized ligand system bearing pyrogallol active sites of the general formula P[BOND](CH2)3[BOND]NH(CH2)3OC6H3(OH)2 (where P represents [Si[BOND]O]n siloxane network) has been prepared by the reaction of 3-aminopropylpolysiloxane with 1,3-dibromopropane followed by the reaction with pyrogallol. 13C CP-MAS NMR and X-ray photoelectron spectroscopy confirmed that the pyrogallol is chemically bonded to the siloxane backbone. Thermal analysis showed that the ligand system is stable under nitrogen at relatively high temperature. The polysiloxane–pyrogallol ligand system exhibits high potential for the uptake of the metal ions (Fe3+, Co2+, Ni2+ and Cu2+). Complexation of the pyrogallol ligand system for the metal ions at the optimum conditions was found to be in the order Fe3+ > Cu2+ > Ni2+ > Co2+.
تاريخ النشر
01/06/2005
الناشر
Applied organometallic chemistry
رابط DOI
DOI: 10.10
رابط خارجي
http://onlinelibrary.wiley.com/doi/10.1002/aoc.888/full
رجوع