The detection of peroxide explosives（PEs） has attracted considerable attention all over the world in global security owing to their simple preparation,poor chemical stability and easy decomposition.In recent years,g...The detection of peroxide explosives（PEs） has attracted considerable attention all over the world in global security owing to their simple preparation,poor chemical stability and easy decomposition.In recent years,great efforts have been devoted to developing organic fluorescence sensors for detecting the PEs because of their fast response,high sensitivity and high selectivity.In this short review,we firstly discuss the sensing mechanisms for fluorescence based the PEs detection.Next,we reviewed recent progress of PE probes in the nearly 5 years and the design strategies of the material structures to enhance the sensitivity or selectivity,such as conjugated polymers and assembled nanoparticles.展开更多
We report the first use of organic semiconductors （OSCs）-coated PAN nanofibrous mats as highly responsive fluorescence quenching-based chemosensors for 2,4,6-trinitrotoluene （TNT） and H2O2 detection in vapor phase...We report the first use of organic semiconductors （OSCs）-coated PAN nanofibrous mats as highly responsive fluorescence quenching-based chemosensors for 2,4,6-trinitrotoluene （TNT） and H2O2 detection in vapor phase. Conjugated polymers, poly（triphenylaminealt-biphenylene vinylene） （TPA- PBPV）, and small organic molecules, l-horonic-ester pyrene and 1,6-bisboron-ester pyrene, were coated onto the nanofibers fabricated by electrospinning. By introducing the nanofibers structure, a 9-fold fluorescence intensity enhancement and a 14-fold sensitivity enhancement were achieved, which could be attributed to its high area-to-volume ratio, excellent gas permeability, and more importantly, the evanescent-wave effect occurred once the diameters of the fibers were small enough. Since the organic semiconductors coated onto the nanofibrous mats could be replaced by other functional materials, the nanofibers-enhanced detection strategies could be extended to more general domains including chemical and environmental detection.展开更多
基金supported by NSFC(Nos.61325001,21273267,61321492,and 51473182)
文摘The detection of peroxide explosives（PEs） has attracted considerable attention all over the world in global security owing to their simple preparation,poor chemical stability and easy decomposition.In recent years,great efforts have been devoted to developing organic fluorescence sensors for detecting the PEs because of their fast response,high sensitivity and high selectivity.In this short review,we firstly discuss the sensing mechanisms for fluorescence based the PEs detection.Next,we reviewed recent progress of PE probes in the nearly 5 years and the design strategies of the material structures to enhance the sensitivity or selectivity,such as conjugated polymers and assembled nanoparticles.
基金the financial support from the National Natural Science Foundation of China(Nos.51003118, 21273267)the Research Programs from the Ministry of Science and Technology of China(No.2012BAK06B03)+1 种基金the Shanghai Science and Technology Committee(No.11JC1414700)the Open Research Fund of State Key Laboratory of Bioelectronics, Southeast University
文摘We report the first use of organic semiconductors （OSCs）-coated PAN nanofibrous mats as highly responsive fluorescence quenching-based chemosensors for 2,4,6-trinitrotoluene （TNT） and H2O2 detection in vapor phase. Conjugated polymers, poly（triphenylaminealt-biphenylene vinylene） （TPA- PBPV）, and small organic molecules, l-horonic-ester pyrene and 1,6-bisboron-ester pyrene, were coated onto the nanofibers fabricated by electrospinning. By introducing the nanofibers structure, a 9-fold fluorescence intensity enhancement and a 14-fold sensitivity enhancement were achieved, which could be attributed to its high area-to-volume ratio, excellent gas permeability, and more importantly, the evanescent-wave effect occurred once the diameters of the fibers were small enough. Since the organic semiconductors coated onto the nanofibrous mats could be replaced by other functional materials, the nanofibers-enhanced detection strategies could be extended to more general domains including chemical and environmental detection.
