Surface-Structured Molecular Sensor for the Optical Detection of Acidity
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- 作者：Alberto Martí ; nez-Otero ; Emilia Evangelio ; Ramon Alibé ; s ; José ; Luis Bourdelande ; Daniel Ruiz-Molina ; Fé ; lix Busqué ; Jordi Hernando
- 刊名：Langmuir
- 出版年：2008
- 出版时间：April 1, 2008
- 年：2008
- 卷：24
- 期：7
- 页码：2963 - 2966
- 全文大小：361K
- 年卷期：v.24,no.7(April 1, 2008)
- ISSN：1520-5827
文摘
In this letter, we report on the development of a surface molecular sensor for the detection of acidity. Lithographicallycontrolled wetting deposition has been applied to form the nanostructure of a new fluorescent compound with threeprotonation states featuring different optical properties on a glass substrate. Atomic force microscopy demonstratesthe functionalization of the surface with ordered arrays of the sensor molecules. The fluorescence properties of theresulting nanopattern at different pH values have been investigated by confocal fluorescene microsopy, thus revealingthe fast, sensitive, reversible response of the prepared nanosensor to gas flows of varying acidity.