COLORIMETRIC DETECTION OF CARBENICILLIN USING CATIONIC POLYTHIOPHENE DERIVATIVES

Gui-ying Liu; Min-huan Lan; Wei-min Liu; Jia-sheng Wu; Jie-chao Ge; Hong-yan Zhang

doi:10.1007/s10118-013-1355-z

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COLORIMETRIC DETECTION OF CARBENICILLIN USING CATIONIC POLYTHIOPHENE DERIVATIVES

PAPER | Updated：2023-01-03

- COLORIMETRIC DETECTION OF CARBENICILLIN USING CATIONIC POLYTHIOPHENE DERIVATIVES
- Chinese Journal of Polymer Science Vol. 31, Issue 11, Pages: 1484-1490(2013)
- Affiliations：
  
  a.Department of Pediatrics, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
  b.Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Author bio：
  
  † Both authors contributed equally to this paper.
  **Wei-min Liu (刘卫敏), E-mail: wmliu@mail.ipc.ac.cn
- Funds：
- DOI：10.1007/s10118-013-1355-z
  CLC：
- Received：01 July 2013，
  
  Revised：2013-07-15，
  
  Accepted：22 July 2013，
  
  Published：2013-11
- Accepted：
Scan QR Code
Gui-ying Liu, Min-huan Lan, Wei-min Liu, et al. COLORIMETRIC DETECTION OF CARBENICILLIN USING CATIONIC POLYTHIOPHENE DERIVATIVES[J]. Chinese Journal of Polymer Science, 2013, 31(11): 1484-1490.
DOI：

Gui-ying Liu, Min-huan Lan, Wei-min Liu, et al. COLORIMETRIC DETECTION OF CARBENICILLIN USING CATIONIC POLYTHIOPHENE DERIVATIVES[J]. Chinese Journal of Polymer Science, 2013, 31(11): 1484-1490. DOI： 10.1007/s10118-013-1355-z.

摘要

Abstract

A water-soluble

polythiophene-based colorimetric sensor was designed for selective and sensitive detection of carbenicillin in HEPES buffer solution. Quaternized quinine was linked to thiophene through bis-functionality benzyl group

which can interact with carbenicillin

via

electrostatic interaction and geometric match effect. The sensor exhibited a colorimetric signal change upon the addition of carbenicillin because of the formation of more nonplanar structures. However

the addition of other beta-lactam antibiotics or dicarboxylic acids into the sensor solution caused no obvious changes in absorbance intensity ratio. This result may be attributed to the cavity formed by the semi-rigid framework of PTQ2

which is suitable for the special binding with carbenicillin. This novel sensor can effectively distinguish carbenicillin from other beta-lactam antibiotics and has a wide linear range response in HEPES buffer solution. Linear calibration curves are obtained with 0 to 18 μmol/L of HEPES buffer solution

with a limit of detection of 0.54 μmol/L.

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