کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400039 | 1505913 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of acridine orange-doped silica nanoparticles for pH measurement
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation of acridine orange-doped silica nanoparticles for pH measurement Preparation of acridine orange-doped silica nanoparticles for pH measurement](/preview/png/5400039.png)
چکیده انگلیسی
Acridine orange was first encapsulated into silica shell via a facile reverse microemusion method to built core-shell fluorescent nanoparticles. The nanoparticles are all in spherical shape and have a narrow size distribution, and its application as a optical pH sensor has been demonstrated. This novel sensor is based on the pH-dependent fluorescence intensities of acridine orange in different pH value. The fluorescence intensity of acridine orange-doped silica nanoparticles was decreased by increasing pH value. Under optimum conditions, the changes of fluorescence intensity were proportional to the pH value in the range of 8.00-10.90. In addition, the sensor can be easily separated by centrifugation and adds no pollution to the environment compared to the free dyes. Furthermore, the effects of ionic strength and co-existing substances were proved to have little influence on the determination of pH. The sensor has been successfully applied to determine the pH of two artificial samples. Hence, the core-shell fluorescent nanoparticles show potential for practical application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 147, March 2014, Pages 155-158
Journal: Journal of Luminescence - Volume 147, March 2014, Pages 155-158
نویسندگان
Jinshui Liu, Lingjie Zang, Yiru Wang, Guoning Liu,