PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS

Xue-diao Cai; Ru Huang; Ya-nan Guo

doi:10.1007/s10118-013-1341-5

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PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS

PAPER | Updated：2023-01-03

- PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS
- PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS
- Chinese Journal of Polymer Science 2013年31卷第10期页码：1443-1450
- Affiliations：
  
  Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
- Author bio：
  
  **Xue-diao Cai (蔡雪刁), E-mail: xdcai@snnu.edu.cn
- Funds：
  
  Fundamental Research Funds for the Central Universities, China(GK 200902008)
- DOI：10.1007/s10118-013-1341-5
  中图分类号：
- 收稿：2012-11-02，
  
  修回：2013-01-29，
  
  录用：2013-02-15，
  
  纸质出版：2013-10
- Accepted：
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Xue-diao Cai, Ru Huang, Ya-nan Guo. PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS[J]. Chinese Journal of Polymer Science, 2013,31(10):1443-1450.

Xue-diao Cai, Ru Huang, Ya-nan Guo. PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS[J]. Chinese Journal of Polymer Science, 2013, 31(10): 1443-1450.
Xue-diao Cai, Ru Huang, Ya-nan Guo. PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS[J]. Chinese Journal of Polymer Science, 2013,31(10):1443-1450. DOI： 10.1007/s10118-013-1341-5.

Xue-diao Cai, Ru Huang, Ya-nan Guo. PREPARATION AND CHARACTERIZATION OF HUMIDITY SENSOR BASED ON POLY(3-ALKYL)PYRROLE CONTAINING PHOSPHONIC ACID GROUPS[J]. Chinese Journal of Polymer Science, 2013, 31(10): 1443-1450. DOI： 10.1007/s10118-013-1341-5.

摘要

Abstract

Poly(3-alkyl)pyrroles containing phosphonic acid groups with different alkyl segment lengths were chemical synthesized and the properties were measured by FTIR and UV-Vis spectroscopy. FTIR and UV-Vis results showed that the synthesized polymers were in a low doping level through chemical polymerization. By spin-coating on the surface of substrates

the polymer can be used as a humidity sensor. The change of DC electric current of the polypyrroles varies with the chain length of the alkyl substituents. The capacitance increases with the increase of the humidity and resistance decreases with the increase of humidity. This result is different from that of polypyrrole without alkyl substituents due to the influence of the phosphonic acid group. The sensor showed the resistive-type at high relative humidity

and the capacitivetype at the low relative humidity. The sensor exhibited very fast response to the change of environment humidity.

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