A pillar[5]arene-based and OH− dependent dual-channel supramolecular chemosensor for recyclable CO2 gas detection: High sensitive and selective off-on-off response. (March 2020)

• Record Type: Journal Article
• Authors: Zhu, Wen-Bo; Wei, Tai-bao; Fan, Yan-Qing; Qu, Wen-Juan; Zhu, Wei; Ma, Xiao-Qiang; Yao, Hong; Zhang, You-Ming; Lin, Qi
• Is Part Of: Dyes and pigments. Volume 174(2020)
• Publication Date: 2020-03
• Subjects: Carbon dioxide detection -- Pillar[5]arene -- Chemosensor -- Highly selectivity and sensitive -- Dual-channel detection; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2019.108073
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A novel supramolecular chemosensor (PNG ) was successfully constructed by 5-(3-nitrophenyl)-furfural-functionalized Pillar[5]arene(PN ) and bipyridine salt(G ) via exo-wall π…π interactions. Interestingly, the chemosensor PNG could detect OH − and CO2 with high selectivity, sensitivity and excellent recyclable properties. The fluorescent detection limits of PNG for OH − and CO2 are 2.03 × 10 −8 M and 9.1 × 10 −8 M (2.22 ppm), respectively. The colorimetric detection limits for OH − and CO2 are 3.78 × 10 −8 M and 1.13 × 10 −7 M (2.76 ppm), respectively. This study is simple and effective for OH − and CO2 detection, and provides supramolecular fields with potential practical application in anion and gas detection. Graphical abstract: Image 1 Highlights: Synthesis of a novel arylfurfural functionalized pillar [5]arene (PN ). The PN and G could self-assemble to supramolecular chemosensor PNG by exo-wall π…π interactions. The PNG shows excellent recyclable dual-channel detections for OH − and CO2 . PNG -based sequential detection for OH − and CO2 with high sensitivity and selectivity.