Organic supernanostructures self-assembled via solution process for explosive detection.
Three different polymorphic crystalline structures, including microbelts and flowerlike supernanostructures, were obtained via a simple solution process by utilizing different solvents from an oligoarene derivative. Explosive chemosensors based on these self-assembled organic crystalline nanostructures were successfully fabricated. The differences in the structures on the microscopic level and in the film morphologies led to dramatic enhancements of the explosive detection speed. With the evolution of structures from the netted 1D microbelts to the flowerlike supernanostructures, the detection speed of the chemosensors for DNT and TNT was improved by more than 700 times. Our discovery demonstrates that the morphology control through self-assembly provides a new platform to utilize organic crystalline microstructures for chemosensors, optoelectronics, biosensors and bioelectronics, and so forth.
Wang
Lei
L
Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, and Key Laboratory of Specially Functional Materials, Ministry of Education, Guangzhou 510640, China.
Zhou
Yan
Y
Yan
Jing
J
Wang
Jian
J
Pei
Jian
J
Cao
Yong
Y
D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D009930:Organic Chemicals / Q000737:chemistry*; D012996:Solutions; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
D009930:Organic Chemicals; D012996:Solutions