Jo uP rl ne aa sl eo df oM na ot et r ai ad l jsu sCt hme am r gi si nt rs y C
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process, further resulting in absorption and emission peak red-
shifts. The results of theoretical calculations by Gaussian 09
was consistent with our experimental results, suggesting that
our proposed response mechanism is reasonable.
Jr, Chem. Commun., 2016, 52, 8279.
DOI: 10.1039/C6TC03116A
1 X. Chen, F. Wang, J. Y. Hyun, T. Wei, J. Qiang, X. Ren, I. Shin
and J. Yoon, Chem. Soc. Rev., 2016, 45, 2976.
2 J. Ding, H. Li, C. Wang, J. Yang, Y. Xie, Q. Peng, Q. Li and Z. Li,
ACS Appl. Mater. Interfaces, 2015, 7, 11369.
3 X. He, Y. Zang, T. D. James, J. Li and G. Chen, Chem. Soc. Rev.,
015, 44, 4239.
4 V. S. Lin, W. Chen, M. Xian and C. J. Chang, Chem. Soc. Rev.,
015, 44, 4596.
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Conclusions
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In summary, we have developed a novel AIE fluorophore (DPA-
TPE-Py) based test-strip sensor for ratiometric fluorescence
detection of gaseous nerve agent mimic DCP in a rapid,
sensitive and selective way. The fluorophore exhibits strong
5 P. Li, L. Liu, H. Xiao, W. Zhang, L. Wang and B. Tang, J. Am.
Chem. Soc., 2016, 138, 2893.
6 C. Zhao, X. Zhang, K. Li, S. Zhu, Z. Guo, L. Zhang, F. Wang, Q.
Fei, S. Luo and P. Shi, J. Am. Chem. Soc, 2015, 137, 8490.
emission in the aggregated state, which is conducive to the 17 S. U. Hettiarachchi, B. Prasai and R. L. McCarley, J. Am Chem
Soc, 2014, 136, 7575.
solid test-strip sensing; also it has quite good photostability,
which is in favour of applications in the long term. Moreover,
the handy and portable DPA-TPE-Py loaded solid test strips are
easy to prepare by direct deposition of the probe molecules
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8 M. H. Lee, J. S. Kim and J. L. Sessler, Chem. Soc. Rev., 2015,
44, 4185.
9 H. Zhang, M. Cao, W. Wu, H. Xu, S. Cheng and L. Fan,
Nanoscale, 2015, , 1374.
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onto the filter paper. The pyridine group of DPA-TPE-Py turns 20 L. A. Juárez, A. M. Costero, M. Parra, S. Gil, F. Sancenón and
R. Martínez-Máñez, Chem. Commun., 2015, 51, 1725.
into pyridinium group after reaction with DCP vapor, resulting
in an emission spectral red-shift from 546 nm to 624 nm. The
change in fluorescence of DPA-TPE-Py loaded test strips upon
contact with DCP can be clearly observed by naked eye by the
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1 C. Yu, X. Li, F. Zeng, F. Zheng and S. Wu, Chem. Commun.,
2
013, 49, 403.
2 S. I. Reja, I. A. Khan, V. Bhalla and M. Kumar, Chem. Commun.,
016, 52, 1182.
2
aid of a portable UV lamp. The detection limit is determined to 23 S. Shen, X. Chen, X. Zhang, J. Miao and B. Zhao, J. Mater.
Chem. B, 2015,
4 Y. Wu, J. Wang, F. Zeng, S. Huang, J. Huang, H. Xie, C. Yu and
S. Wu, ACS Appl. Mater. Interfaces, 2016, , 1511.
5 D. Pangeni and E. E. Nesterov, Macromolecules, 2013, 46
266.
3, 919.
be as low as 1.82 ppb. The strategy herein will be helpful for
devising convenient ratiometric fluorescent sensors in solid
state and providing a portable approach for detection of
gaseous nerve agents.
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,
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6 B. Diaz De Grenu, D. Moreno, T. Torroba, A. Berg, J. Gunnars,
T. Nilsson, R. Nyman, M. Persson, J. Pettersson and I. Eklind,
J. Am. Chem. Soc., 2014, 136, 4125.
Acknowledgements
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7 X. Hu, Y. Su, Y. Ma, X. Zhan, H. Zheng and Y. Jiang, Chem.
Commun., 2015, 51, 15118.
8 S. Jo, D. Kim, S. Son, Y. Kim and T. S. Lee, ACS Appl. Mater.
Interfaces, 2014, 6, 1330.
9 X. Zhou, Y. Zeng, L. Chen, X. Wu and J. Yoon, Angew. Chem.,
Int. Ed., 2016, 55, 4729.
We gratefully acknowledge the financial support by the
Science and Technology Planning Project of Guangzhou
(Project No. 201607020015), the National Key Basic Research
Program of China (Project No. 2013CB834702), NSFC
(
Foundation of Guangdong Province (2016A030312002) and
the Fundamental Research Funds for the Central Universities
21574044, 21474031 and 51673066), the Natural Science 30 S. Sarkar and R. Shunmugam, Chem. Commun., 2014, 50
,
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511.
1 W. Xuan, Y. Cao, J. Zhou and W. Wang, Chem. Commun.,
013, 49, 10474.
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(2015ZY013). The authors greatly appreciate the help of Dr.
2 Y. Wu, S. Huang, F. Zeng, J. Wang, C. Yu, J. Huang, H. Xie and
S. Wu, Chem. Commun., 2015, 51, 12791.
Xinyi Cai with theoretical calculations and discussions.
3 J. Wang, Y. Wu, F. Zeng, S. Huang, and S. Wu, Faraday
Discuss., 2016, DOI: 10.1039/C6FD00118A.
4 Z. Song, W. Zhang, M. Jiang, H. H. Sung, R. T. Kwok, H. Nie, I.
D. Williams, B. Liu and B. Z. Tang, Adv. Funct. Mater., 2016,
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