Rapid responsible optical CO2 sensor of the combination of colorimetric change of α-naphtholphthalein in poly(trimethylsiliylpropyne) layer and internal reference fluorescent porphyrin in polystyrene layer

Yutaka Amao*, Tasuku Komori, Hiroyuki Nishide

*この研究の対応する著者

研究成果: Article査読

14 被引用数 (Scopus)

抄録

An optical CO2 sensor based on the overlay of the CO2 induced absorbance change of pH indicator dye α-naphtholphthalein in poly(trimethylsiliypropyne) (poly(TMSP))layer with the fluorescence of tetraphenylporphyrin (TPP) in polystyrene layer is developed. The observed luminescence intensity from TPP at 655 nm increased with increasing the CO 2 concentration. The ratio I100/I0 value of the sensing film, where I0 and I100 represent the detected luminescence intensities from a layer exposed to 100% argon and 100% CO 2, respectively, that the sensitivity of the sensor, is estimated to be 10.3. The response and recovery times of the sensing film are less than 3.0 s for switching from argon to CO2, and for switching from CO 2 to argon. The signal changes are fully reversible and no hysteresis is observed during the measurements. The highly sensitive and fast responsible optical CO2 sensor based on fluorescence intensity changes of TPP due to the absorption change of α-naphtholphthalein with CO2 is achieved using poly(TMSP) film.

本文言語English
ページ(範囲)35-41
ページ数7
ジャーナルReactive and Functional Polymers
63
1
DOI
出版ステータスPublished - 2005 4月

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック

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