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Discrimination of Saturated Alkanes and Relevant Volatile Compounds via Utilization of a Conceptual Fluorescent Sensor Array Based on Organoboron-Containing Polymers

Abstract

This work reports a conceptual sensor array for highly discriminative analysis of 20 clinically and environmentally well concerned volatile small organic molecules (VSOMs), including saturated alkanes and common solvents, in the air at room temperature. For constructing the sensor array, a four coordinated, non-planar mono-boron complex and four relevant polymers are synthesized. Based on the polymers and by using different substrates, 8 fluorescent films have been fabricated. Integration of the films-based sensors results in the sensor array, which demonstrates unprecedented discriminating capability toward the VSOMs. Moreover, for the signal molecule of lung cancer, n-pentane, the response time is less than 1 s, the experimental detection limit is lower than 3.7 ppm, and more than 50 times tests shows no observable degradation. The superior sensing performance is partially ascribed to the tetrahedral structure of the boron centers in the polymers as it may produce molecular channels in the films, which are a necessity for fast and reversible sensing. In addition, polarity of the micro-channels may endow the films additional selectivity towards the analytes. The design as demonstrated provides an effective strategy to improve the sensing performance of fluorescent films to very challenging analytes, such as saturated alkanes.

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Publication details

The article was received on 11 Dec 2017, accepted on 05 Jan 2018 and first published on 05 Jan 2018


Article type: Edge Article
DOI: 10.1039/C7SC05243J
Citation: Chem. Sci., 2018, Accepted Manuscript
  • Open access: Creative Commons BY-NC license
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    Discrimination of Saturated Alkanes and Relevant Volatile Compounds via Utilization of a Conceptual Fluorescent Sensor Array Based on Organoboron-Containing Polymers

    Y. Qi, W. Xu, R. Kang, N. Ding, Y. Wang, G. He and Y. Fang, Chem. Sci., 2018, Accepted Manuscript , DOI: 10.1039/C7SC05243J

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