Development of fluorescent microgel thermometers based on thermo responsive polymers and their modulation of sensitivity range

被引：133

作者：

Iwai, K ^{[1
]}

Matsumura, Y

Uchiyama, S

de Silva, AP

机构：

[1] Nara Womens Univ, Fac Sci, Dept Chem, Nara 6308506, Japan

[2] Queens Univ Belfast, Sch Chem, Belfast BT9 5AG, Antrim, North Ireland

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2005年 / 15卷 / 27-28期

关键词：

D O I：

10.1039/b502277k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fluorescent molecular thermometers based on thermo-responsive linear polymer molecules such as poly(N-isopropylacrylamide) ( PNIPAM) labelled with a polarity-responsive fluorescent molecule benzofurazan ( BD) are the most sensitive known. Thermo-responsive PNIPAM and some related polymer microgel particles labelled with BD by emulsion polymerization have been prepared and their fluorescence properties in water as fluorescent thermometers studied. All the cross-linked polymer microgel particles dispersed in water fluoresce strongly as soon as each threshold temperature is exceeded. The nine kinds of microgel dispersion developed in this work thoroughly cover the sensitivity range from 18 to 47 degrees C. They are not only more sensitive than the previous fluorescent molecular thermometers based on other principles but also highly reproducible in their behaviour.

引用

页码：2796 / 2800

页数：5

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