Preparation of novel core-shell silica particles for pH sensing using ratiometric fluorescence approach - Details

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Abstract：

Core-shell　silica　particles　encapsulating　two　luminescent　dyes　with　different　emission　wavelengths　were　prepared　for　ratiometric　fluorescence　sensing　of　pH.　The　composite　core-shell　structure　particles　contained　a　polyacrylonitrile　(PAN)　core　surrounding　a　silica　shell.　Fluorescein　isothiocyanate　(FITC)　encapsulated　in　the　silica　shell　was　taken　as　an　indicator,　Fluorescence　emission　from　Ru(dpp)　3(ClO　4)　2　immobilized　in　PAN　core　was　used　as　a　reference　light.　The　ratiometric　fluorescence　signal　from　the　core-shell　silica　particles　were　found　with　a　linear　range　from　pH　5.80　to　7.50　(R　2　=　0.997).　In　addition,　the　morphology　of　the　core-shell　silica　particles,　the　effects　of　temperature　and　co-existing　substances　were　investigated.　The　core-shell　silica　particles　were　successfully　applied　to　determination　of　pH　value　in　water　and　urine　samples.　©　2012　The　Royal　Society　of　Chemistry.

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[ 1 ] [Ye, T.-X.]Department of Chemistry, Fuzhou University, Ministry of Education, Fuzhou 350002, China
[ 2 ] [Ye, T.-X.]College of Pharmacy, Fujian Medical University, Fuzhou 350004, China
[ 3 ] [Du, Y.-Y.]Department of Chemistry, Fuzhou University, Ministry of Education, Fuzhou 350002, China
[ 4 ] [He, C.-Y.]Department of Chemistry, Fuzhou University, Ministry of Education, Fuzhou 350002, China
[ 5 ] [Qiu, B.]Department of Chemistry, Fuzhou University, Ministry of Education, Fuzhou 350002, China
[ 6 ] [Wang, Y.-R.]State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
[ 7 ] [Chen, X.]State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China

Reprint 's Address：

[Chen, X.]State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China

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xichen@xmu.edu.cn

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Source ：

Analytical Methods

ISSN： 1759-9660

Year： 2012

Issue： 4

Volume： 4

Page： 1001-1004

1 . 8 5 5

JCR@2012

2 . 7 0 0

JCR@2023

JCR Journal Grade：2

CAS Journal Grade：3

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WoS CC Cited Count：

SCOPUS Cited Count： 9

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 2

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