산성 용액의 pH를 감지할 수 있는 형광 센서막
A Fluorescent Sensor Film for Detecting pH of Acidic Solutions
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초록
산성 영역에서 작동하는 고감도 형광 pH 센서막을 제조하기 위하여 실란화된 유리 표면 상에 push-pull 공액 염료 (DCMP)를 공유결합에 의해 고정화하였다. DCMP 유도체(DCMA), 2-hydroxyethyl methacrylate (HEMA)및 triethylene glycol dimethacrylate의 혼합물을 광개시 공중합하여 pH 감응성 형광센서막을 제조하였다. 분광학적 측정 결과, pH 2.0−5.0 사이에서 pH 가 증가함에 따라 센서막의 흡광도가 증가하였으며, 같은 pH 범위에서 pH 증가에 따라 센서막의 형광 세기도 약 50배 정도 증 가하였다. 산성 조건에서 pH 변화에 대한 센서막의 감응은 가역적이고 재현성이 우수하였다. 또한 센서막은 20−50초 사이의 비 교적 짧은 감응 시간과 여러 금속이온 존재에서 수소 이온에 대해 높은 선택성을 나타내었다.
Abstract
A push-pull conjugated dye (DCMP) was covalently immobilized on a silanized glass surface to produce a high sensitivity pH sensor film for operating in the acidic region. A pH-sensitive sensor film was prepared by photo-initiating copolymerization of a modified DCMP (DCMA), 2-hydroxyethyl methacrylate (HEMA) and triethylene glycol dimethacrylate on the silanized glass surface. The absorbance of the sensor film increased with increasing pH between pH 2.0 and 5.0, and the fluorescence intensity of the film also increased about 50 times with increasing pH in the same pH range. The sensor film was reversible and reproducible under acidic conditions. The sensor film showed a relatively short response time between 20−50 seconds and high selectivity for proton in the presence of various metal ions.
참고문헌 (20)
- Qi, J., , Anal. Chem, 87, pp.5897~ (2015)
- Wang, X. Y., , Sens. Actuators B, 234, pp.593~ (2016)
- Li, Z. Z., , Sens. Actuators B, 114, pp.308~ (2006)
- Ge, Y., , Sens. Actuators B, 166-167, pp.480~ (2012)
- Duong, H. D., , Microchem. J., 84, pp.50~ (2006)
- Wencel, D., , Sens. Actuators B, 139, pp.208~ (2009)
- Cajlakovic, M., , Anal. Chim. Acta, 455, pp.207~ (2002)
- Derinkuyu, S., , Anal. Chim. Acta, 588, pp.42~ (2007)
- Nivens, D. A., , Talanta, 58, pp.543~ (2002)
- Hashemi, P., , Sens. Actuators B, 115, pp.49~ (2006)
- Ma, Q. J., , Sens. Actuators B, 166-167, pp.68~ (2012)
- 김대영, "A Sol–Gel-derived Optical Sensor Applicable for Determination of Extremely Low pH Values", Bulletin of the Korean Chemical Society, 36(2), pp.473~478 (2015), 대한화학회[DOI]
- Safavi, A., , Sens. Actuators B, 90, pp.143~ (2003)
- Safavi, A., , Spectrochim. Acta Part A, 66, pp.575~ (2007)
- Hashemi, P., , Sens. Actuators B, 135, pp.112~ (2008)
- 임현구, "A Fluorescent Optode Membrane Covalently Immobilized with a Donor–Acceptor Conjugated Dye for pH Sensing under Extremely Acidic Conditions", Bulletin of the Korean Chemical Society, 40(6), pp.586~589 (2019), 대한화학회[DOI]
- Kim, D. Y., , Sens. Actuators B, 206, pp.508~ (2015)
- Derinkuyu, S., , Anal. Chim. Acta, 588, pp.42~ (2007)
- Cajlakovic, M., , Anal. Chim. Acta, 455, pp.207~ (2002)
- Young Hyun Kim, "Synthesis and pH-sensing Properties of a Push–Pull Conjugated Fluorophore Based on Dicyanomethylene-1,4-dihydropyridine", Bulletin of the Korean Chemical Society, 37(4), pp.494~499 (2016), 대한화학회[DOI]