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Chinese Journal of Polymer Science

, Volume 36, Issue 12, pp 1321–1327 | Cite as

CO2-responsive Polymeric Fluorescent Sensor with Ultrafast Response

  • Yun Wang
  • Meng Huo
  • Min Zeng
  • Lei Liu
  • Qi-Quan Ye
  • Xi Chen
  • Dan Li
  • Liao Peng
  • Jin-Ying Yuan
Article
  • 36 Downloads

Abstract

Abstract Response speed is one of the most important evaluation criteria for CO2 sensors. In this work, we report an ultrafast CO2 fluorescent sensor based on poly[oligo(ethylene glycol) methyl ether methacrylate]-b-poly[N,N-diethylaminoethyl methacrylate-r-4-(2-methylacryloyloxyethylamino)-7-nitro-2,1,3-benzoxadiazole] [POEGMA-b-P(DEAEMA-r-NBDMA)], in which DEAEMA units act as the CO2-responsive segment and 4-nitrobenzo-2-oxa-1,3-diazole (NBD) is the chromophore. The micelles composed of this copolymer could disassemble in 2 s upon CO2 bubbling, accompanying with enhanced fluorescence emission with bathochromic shift. Furthermore, the quantum yield of the NBD chromophore increases with both the CO2 aeration time and the NBD content. Thus we attribute the fluorescent enhancement to the inhibition of the photo-induced electron transfer between unprotonated tertiary amine groups and NBD fluorophores. The sensor is durable although it is based on “soft” materials. These micellar sensors could be facilely recycled by alternative CO2/Ar purging for at least 5 times, indicating good reversibility.

Keywords

CO2-responsive polymer Fluorescent sensor Ultrafast response 

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Notes

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 51573086 and 21374058) and the Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) (No. sklpme2014-4-26).

Supplementary material

10118_2018_2167_MOESM1_ESM.pdf (1.2 mb)
CO2-responsive Polymeric Fluorescent Sensor with Ultrafast Response

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Copyright information

© Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Yun Wang
    • 1
  • Meng Huo
    • 1
  • Min Zeng
    • 1
  • Lei Liu
    • 1
  • Qi-Quan Ye
    • 1
  • Xi Chen
    • 1
  • Dan Li
    • 1
  • Liao Peng
    • 1
  • Jin-Ying Yuan
    • 1
  1. 1.Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of ChemistryTsinghua UniversityBeijingChina

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