Assembly of polythiophenes on responsive polymer microgels for the highly selective detection of ammonia gas

Chang, Aiping; Peng, Yahui; Li, Zezhou; Yu, Xiang; Hong, Kunlun; Zhou, Shuiqin; Wu, Weitai

doi:10.1039/C5PY02014J

Title: Assembly of polythiophenes on responsive polymer microgels for the highly selective detection of ammonia gas

Journal Article · Tue Apr 05 00:00:00 EDT 2016 · Polymer Chemistry

DOI:https://doi.org/10.1039/C5PY02014J· OSTI ID:1261288

Chang, Aiping ^[1]; Peng, Yahui ^[1]; Li, Zezhou ^[1]; Yu, Xiang ^[2]; Hong, Kunlun ^[3]; Zhou, Shuiqin ^[4]; Wu, Weitai ^[1]

Xiamen Univ. (China). State Key Lab. for Physical Chemistry of Solid Surfaces. Collaborative Innovation Center of Chemistry for Energy Materials. The Key Lab. for Chemical Biology of Fujian Province. Dept. of Chemistry
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
The City Univ. of New York, Staten Island (United States). Dept. of Chemistry and The Center for Engineered Polymeric Materials of College of Staten Island

For this study, a class of smart composite materials based on the assembly of conjugated polymers on responsive polymer microgels has been prepared. We have chosen poly(3-((2-(2-methoxyethoxy)ethoxy)methyl)-thiophene) as the model conjugated polymer and an ammonia-responsive microgel of phenoxazinium-functionalized poly(N-isopropylacrylamide-co-propargyl acrylate) as the model template. Under this design, the composite materials can combine the electrical conductivity of the conjugated polymers and the ammonia recognisability of the ammonia-responsive polymer microgels; the cooperation of these properties allows the reversible control of electrical conductivity by ammonia gas. Those composite materials can not only adapt to ammonia gas, but also convert changes in the concentration of ammonia into conductance, allowing the electrical detection of ammonia gas with high selectivity. This makes the composite materials different from the conductive polymer platforms reported previously, which may also respond to non-ammonia gases and the response induced by non-ammonia gases is close to that induced by ammonia gas. Using these composite materials as sensing materials for the electrical detection of ammonia gas, the detection limit can reach as low as 1.1 ppb. Finally, these features enable their use for the electrical detection of ammonia in breath.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Foundation of China; Natural Science Foundation for Distinguished Young Scholars of Fujian Province (China); University of Ministry of Education of China; CUNY Advanced Science Research Center (ASRC) (United States)

Grant/Contract Number:: AC05-00OR22725; 91227120; 21274118; 21574107; 20923004; 2014J06006; NCET-13-0506; J1310024

OSTI ID:: 1261288

Journal Information:: Polymer Chemistry, Vol. 7, Issue 18; ISSN 1759-9954

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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