UV-Vis irradiation.The photodegradation of polystyrene films has been investigated in the presence of sensitizers such as benzophenone (BP) and thioxanthone (TX). The phototransformations were studied by infrared and UV-Vis spectroscopy. The results indicate that these photosensitizers accelerate and ...
Ultraviolet and visible (UV-vis) spectra were collected at room temperature with a Shimadzu UV3600 Plus UV-VIS-NIR Spectrophotometer in Analytic Instrumentation Center of College of Chemistry and Molecular Engineering at Peking University. A white standard of BaSO4was used as a reference. ...
Film thickness was calculated by curve fitting the reflection fringe obtained from a UV–vis–near- infrared (IR) spectrometer (Jasco V-670, Jasco Corporation, Hachioji, Japan) equipped with an absolute reflectance measurement unit (ARSN-733). Typical thicknesses were in the range 160–180 nm....
The dispersions were prepared by sonicating MWCNT/PVBC_Et3N mixtures in dimethylformamide for 5min and the quantification of the MWCNTs dispersed was evaluated by UV–vis spectroscopy investigations and thermogravimetric analyses. The investigations demonstrated the realization of MWCNT/PVBC_Et3N sensors ...
作者: Bellamarie Ludwig,Eric S. Tillman 摘要: <IMG src="tgra001" border=0> 关键词: atom transfer radical polymerization (ATRP) reverse atom transfer radical polymerization (RATRP) UV-vis spectroscopy DOI: 10.1002/macp.200500296 年份: 2005 收藏...
The objective of this chapter is to use the spectroscopy techniques such as UV-vis spectroscopy, Fourier-Infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), Raman spectroscopy, electron spin resonance (ESR) for a... S Riyajan 被引量: 1发表: 2013年 Facile Preparation of...
The progress of aminolysis and the subsequent spontaneous oxidation of selenols to diselenides are monitored by UV–vis, gel permeation chromatography (GPC), and NMR characterizations, confirming the cyclic topologies of the resultant polymers (monocyclic or multiblock cyclic polymer). The monoblock ...
The resulting vinyl silica nanoparticles, polystyrene/silica nanoparticles were characterized by means of Fourier transformation infrared spectroscopy, scanning electron microscopy and UV-vis absorption spectroscopy. The results indicated that polystyrene had been successfully grafted onto vinyl silica nanoparticles...
Ultraviolet-visible spectrophotometry (UV-Vis) results of polymer composite film in the range of 200–400 nm indicate the interaction between neighbouring phenyl groups. Structural properties of the composite films were determined by the Fourier transform infrared spectroscopy (FT-IR) and X-ray ...
Room temperature UV–VIS absorption spectra exhibit a shoulder at 412 nm that is consistent with the presence of CdS nanocrystals of ≈2 nm. The role of the polymer on the nanoparticle growth was also discussed.doi:10.1016/j.matlet.2005.05.047F. Antolini...