کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1246188 | 969747 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of a new core–shell Ag@SiO2 nanocomposite and its application for fluorescence enhancement
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation of a new core–shell Ag@SiO2 nanocomposite and its application for fluorescence enhancement Preparation of a new core–shell Ag@SiO2 nanocomposite and its application for fluorescence enhancement](/preview/png/1246188.png)
چکیده انگلیسی
Ag@SiO2 nanoparticles with different shell thicknesses were synthesized via modified Stöber method. Rhodamine B isothiocyanate was covalently bound onto the surface of Ag@SiO2 nanoparticles to form fluorescent core–shell Ag@SiO2 nanocomposites. Effects of shell thickness on the fluorescence enhancement were examined using the corresponding nanobubbles prepared by cyanide etching as a control. The result showed that the fluorescence enhanced as the shell thickness increased till the distance between fluorophore and metal core reached about 75 nm with the optimal enhancement factor of ∼5-folds. Further increasing of fluorophore–metal distance caused a decrease in the enhancement factor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 82, Issue 5, 15 October 2010, Pages 1696–1700
Journal: Talanta - Volume 82, Issue 5, 15 October 2010, Pages 1696–1700
نویسندگان
Liangqia Guo, Anhua Guan, Xiaolin Lin, Chunliang Zhang, Guonan Chen,