共价键
剥脱关节
材料科学
多孔性
分析物
荧光
选择性
发光
酰亚胺
纳米颗粒
纳米技术
石墨烯
化学工程
组合化学
化学
有机化学
色谱法
高分子化学
光电子学
催化作用
光学
物理
工程类
复合材料
作者
Gourab Das,Bishnu P. Biswal,Sharath Kandambeth,V. Venkatesh,Gagandeep Kaur,Matthew A. Addicoat,Thomas Heine,Sandeep Verma,Rahul Banerjee
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2015-01-01
卷期号:6 (7): 3931-3939
被引量:503
摘要
Two new imide-based crystalline, porous, and chemically stable covalent organic frameworks (COFs) (TpBDH and TfpBDH) have been successfully synthesized employing solvothermal crystallization route. Furthermore, thin layered covalent organic nanosheets (CONs) were derived from these bulk COFs by the simple liquid phase exfoliation method. These 2D CONs showcase increased luminescence intensity compared to their bulk counterparts (COFs). Notably, TfpBDH-CONs showcase good selectivity and prominent, direct visual detection towards different nitroaromatic analytes over TpBDH-CONs. Quite interestingly, TfpBDH-CONs exhibit a superior "turn-on" detection capability for 2,4,6-trinitrophenol (TNP) in the solid state, but conversely, they also show a "turn-off" detection in the dispersion state. These findings describe a new approach towards developing an efficient, promising fluorescence chemosensor material for both visual and spectroscopic detection of nitroaromatic compounds with very low [10-5 (M)] analyte concentrations.
科研通智能强力驱动
Strongly Powered by AbleSci AI