کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5404316 | 1392776 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fluorescent enhancement effect in heterometallic terbium-lanthanum hybrid molecular materials obtained by functional bridge grafting to silica network
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new monomer, TBBA-APMES, has been synthesized by grafting 3-aminopropyl-methyl-diethoxylsiliane (APMES) to 4-tert-butylbenzoic acid (TBBA) and characterized by H NMR, C NMR and Fourier transform infrared (FT-IR). The monomer acts as a functional ligand for Tb and La ion and as a sol-gel precursor. Luminescent hybrid materials consisting of terbium-lanthanum complex covalently bonded to a silica-based network have been obtained in situ via a sol-gel approach. Through the co-hydrolysis and polycondensation, Tb3+ and La3+ can be introduced in the same molecular hybrids through the chemical Si-O network and fluorescent enhancement is observed. The luminescent behavior has been studied with the different ratios of Tb3+-La3+, suggesting that the luminescence intensities of hybrids can be enhanced obviously by the existence of La3+. The enhanced fluorescence effect may be due to the strengthening of intramolecular energy transfer efficiency by La3+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 118, Issue 2, June 2006, Pages 317-324
Journal: Journal of Luminescence - Volume 118, Issue 2, June 2006, Pages 317-324
نویسندگان
Li-Min Zhao, Bing Yan,