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Biocompatible and flexible graphene oxide/upconversion nanoparticle hybrid film for optical pH sensing
Yan L(晏亮); Chang YN(常亚男); Yin WY(尹文艳); Yan, L; Chang, YN; Yin, WY; Liu, XD; Xiao, DB; Xing, GM; Zhao, LN; Gu, ZJ; Zhao, YL;; Liu XD(刘晓东); Xing GM(邢更妹); Zhao LN(赵丽娜); Gu ZJ(谷战军); Zhao YL(赵宇亮)
2014
发表期刊PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷号16期号:4页码:1576-1582
摘要Free-standing optical hybrid film which is composed of positively-charged polyethylenimine-coated NaYF4: Yb, Er nanoparticles and negatively-charged graphene oxide (GO) has been developed to measure pH based on the pH-dependent luminescence quenching effect caused by GO. The isothermal titration calorimetry analyses indicate that the interaction between GO and NaYF4: Yb, Er nanoparticles becomes stronger with increasing pH, leading to a more significant fluorescence quenching of NaYF4: Yb, Er nanoparticles at high pH values. The excellent mechanical properties of the hybrid film endow the thin-film pH sensor with better repeatability and higher stability during the measurements. Quantitatively, the upconversion luminescence intensity of the hybrid film exhibits a linear trend over the pH range of 5.00-8.00. Because of excitation with a 980 nm laser, as expected, the hybrid film sensor is also sensitive to the urine measurements with reduced background absorption. In addition to its good biocompatibility, our free-standing hybrid film sensor would be a promising candidate for biological, medical, and pharmaceutical applications.
学科领域Chemistry; Physics
DOI10.1039/c3cp54317j
收录类别SCI
WOS记录号WOS:000328884900033
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被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225247
专题多学科研究中心
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GB/T 7714
Yan L,Chang YN,Yin WY,et al. Biocompatible and flexible graphene oxide/upconversion nanoparticle hybrid film for optical pH sensing[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(4):1576-1582.
APA 晏亮.,常亚男.,尹文艳.,Yan, L.,Chang, YN.,...&赵宇亮.(2014).Biocompatible and flexible graphene oxide/upconversion nanoparticle hybrid film for optical pH sensing.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(4),1576-1582.
MLA 晏亮,et al."Biocompatible and flexible graphene oxide/upconversion nanoparticle hybrid film for optical pH sensing".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.4(2014):1576-1582.
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