Author :
Associate Prof. Qing Zhang
Nanyang Technological University
Director of Centre of Micro-/Nano-electronics (NOVITAS)
Singapore
Associate Prof. Qing Zhang
Nanyang Technological University
Director of Centre of Micro-/Nano-electronics (NOVITAS)
Singapore
"Studies of molecules interactions with nanostructures"
ABSTRACT
The electronic properties of single-walled carbon nanotubes (SWCNTs) which are functionalized with several specific molecules and examine the possible electronic property variations for electronic applications will be first discussed. We confirm that the metallicity of metallic SWCNTs can be largely preserved upon dichlocarbene functionalization ([2+1] cycloaddition) in comparison with the SWCNTs subject to the Prato reaction ([2+3] cycloaddition). These findings support the hypothesis that [2+1] cycloaddition could recover the sp2 hybridization on the sidewall of metallic SWCNTs and preserve the metallicity of metallic SWCNTs.
Then, the influences of water molecules on two-dimensional transition metal dichalcogenides, like MoS2 and WSe2 will be discussed. Our recent finding suggests p-type doping of water molecules to both monolayer MoS2 and WSe2. In addition, water molecules are also found to contribute significantly to the dipole responses of both materials.
BIOGRAPHY
Qing Zhang is a professor in the School of Electrical and Electronic Engineering, Nanyang Technological University (NTU), Singapore. His research interests cover nanomaterials and nano/micro-electronic devices, carbon/silicon based thin films, etc. His attention focuses on carbon nanotube and other 0-D, 1-D and 2-D nanostructure based devices and fundamentals, etc. He and his group members have studied functionalized carbon nanotubes for several types of sensors, including NH3 gas sensors, nitrophenol sensors, organophosphate sensors and glucose sensors, etc. He has published more than 230 peer-review scientific papers in pre-eminent journals and successfully completed 6 big research projects as principal investigator since he joined NTU in 1996. Currently, Qing Zhang is Director of Director of NOVITAS, Nanoelectronics Centre of Excellence in School of Electrical and Electronic Engineering, NTU, in which a wide range of sensors and sensing technologies are under investigations.
The electronic properties of single-walled carbon nanotubes (SWCNTs) which are functionalized with several specific molecules and examine the possible electronic property variations for electronic applications will be first discussed. We confirm that the metallicity of metallic SWCNTs can be largely preserved upon dichlocarbene functionalization ([2+1] cycloaddition) in comparison with the SWCNTs subject to the Prato reaction ([2+3] cycloaddition). These findings support the hypothesis that [2+1] cycloaddition could recover the sp2 hybridization on the sidewall of metallic SWCNTs and preserve the metallicity of metallic SWCNTs.
Then, the influences of water molecules on two-dimensional transition metal dichalcogenides, like MoS2 and WSe2 will be discussed. Our recent finding suggests p-type doping of water molecules to both monolayer MoS2 and WSe2. In addition, water molecules are also found to contribute significantly to the dipole responses of both materials.
BIOGRAPHY
Qing Zhang is a professor in the School of Electrical and Electronic Engineering, Nanyang Technological University (NTU), Singapore. His research interests cover nanomaterials and nano/micro-electronic devices, carbon/silicon based thin films, etc. His attention focuses on carbon nanotube and other 0-D, 1-D and 2-D nanostructure based devices and fundamentals, etc. He and his group members have studied functionalized carbon nanotubes for several types of sensors, including NH3 gas sensors, nitrophenol sensors, organophosphate sensors and glucose sensors, etc. He has published more than 230 peer-review scientific papers in pre-eminent journals and successfully completed 6 big research projects as principal investigator since he joined NTU in 1996. Currently, Qing Zhang is Director of Director of NOVITAS, Nanoelectronics Centre of Excellence in School of Electrical and Electronic Engineering, NTU, in which a wide range of sensors and sensing technologies are under investigations.
