عنوان المقالة:Polysiloxane-immobilized triamine ligand system, synthesis and applications
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 13769
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- Issa M El-Nahhal, Basheer A El-Shetary, Kamal AR Salib, Nizam M El-Ashgar, Ahmed M El-Hashash
- الملخص العربي
- The polysiloxane-immobilized triamine ligand system of the formula P-(CH 2 ) 3 NH(CH 2 ) 2 NH(CH 2 ) 2 NH 2 (where P represents the siloxane network) has been prepared via the sol-gel process by hydrolytic polycondensation of (EtO) 4 Si and (MeO) 3 Si(CH 2 ) 3 NH(CH 2 ) 2 NH(CH 2 ) 2 NH 2 . An alternative method was used by the reaction of the iodopolysiloxane P-(CH 2 ) 3 -I and diethylenetriamine in the presence of triethylamine. The immobilized triamine ligand forms metal chelate complexes when treated with aqueous metal(II) ion solutions (Co 2+ , Ni 2+ , and Cu 2+ ). The elemental analysis and FTIR results suggest that this ligand system undergoes a substantial leaching of diethylenetriamine ligand moieties from the siloxane framework.
- تاريخ النشر
- 01/03/2002
- الناشر
- Phosphorus, Sulfur, and Silicon and the Related Elements
- رابط DOI
- http://dx.
- رابط خارجي
- http://www.tandfonline.com/doi/abs/10.1080/10426500210274
- الكلمات المفتاحية
- Metal Uptake, Polysiloxanes, Polysiloxane-immobilized Ligand Systems, Triamine Ligands