The book starts with an overview of the single molecule/particle catalysis by introducing concisely the history of some typical study methods for single molecule/particle nanocatalysis (Chapter 1), showing the origins of all kinds of techniques for the detection of some weak signals. Then, there are individual discussions based on different detection tools. Firstly, the physical/mathematical b…
Abstract. Vertically aligned CNT films were grown on polycrystalline b-SiC wafers by the surface decomposition method. Their frictional behaviours were investigated by AFM at the nanometer scales. Compared with DLC film and silicon wafers, they demonstrate an extremely low friction coefficient at the nanometer scale about 0.03–0.04. The effect of the surface topography on the friction co…
Abstract. PAA/gelatin nanoparticles, with interpolymer complexes of gelatin and polyacrylic acid (PAA) as the cores and gelatin as the shells, were prepared via facile polymerization of AA on gelatin template. The morphology change of the nanoparticles during the reaction was traced by a combined use of dynamic light scattering (DLS) and atomic force microscopy (AFM) techniques, which revea…
Abstract. A simple method of changing pre-treatment temperature in the course of film formation was used to tune the surface structures of PVA membranes. Surface structure and property of the resulting membranes were characterized by X-ray photoelectron spectroscopy (XPS), sum frequency generation (SFG) vibrational spectroscopy, and contact angle measurements. The results show that PVA have…
Abstract. In this work, we fabricated the composites containing multi-walled carbon nanotubes (MWNTs) and 4- methoxyphenyl-40-propylbenzoate (MPPB), a monotropic nematic liquid crystal (LC), via ultrasonication. The nematic phase and thermal stability of the resultant MWNTs/MPPB nanocomposites were investigated by polarized optical microscopy (POM) and thermogravimetric analyzer (TGA) respe…
Hexagonal B-NaYF4 was synthesized as capped bipyramidal microdisks solvothermally from yttria (Y2O3), sodium fluoride and ammonium hydrogen fluoride. The microdisks are bound by up to eighteen faces; six {202j3} facets on both the top and bottom of the disk and six radial {101j0} facets around its central band. The overall morphology and particle size can be modified through change of tempe…
Fluorous linker-facilitated synthesis integrates the characteristics of solution-phase reactions and phase-tag-based separation. It has advantages of favorable homogeneous reaction kinetics, broad synthetic scope, easy monitoring of the reaction process, and compatibility with other synthetic and separation technologies. Complementary to the polymer linkers for solid-phase synthesis, the fluoro…
Plant steroid hormones, brassinosteroids (BRs), play essential roles in modulating cell elongation, vascular differentiation, senescence and stress responses. BRs signal through plasma membrane-localized receptor and other components to modulate the BES1/BZR1 (BRI1-EMS SUPPRESSOR 1/BRASSINAZOLE RESISTANT 1) family of transcription factors that modulate thousands of target genes. Arabodopsis …
To investigate the effects of multiple environmental conditions on greenhouse gas (CO2, N2O, CH4) fluxes, we transferred three soil monoliths from Masson pine forest (PF) or coniferous and broadleaved mixed forest (MF) at Jigongshan to corresponding forest type at Dinghushan. Greenhouse gas fluxes at the in situ (Jigongshan), transported and ambient (Dinghushan) soil monoliths were measured usi…