In order to identify potential candidates as sensors for in vivo EPR oximetry, we carried out a systematic study among commercially available carbon black. A total of 43 carbon blacks were tested. Only two carbon blacks presented a stable, reproducible, and sensitivee response to pO2 for more than 2 months. Therefor, these two carbon blacks should be considered as good candidates to be used as oxygen sensor using in vivo EPR spectroscopy

UV-visible absorption spectrum of pure 2-methyl-5-octadecyl-N,N'-dicyanoquinonediimine (C18MeDCNQI) Langmuir films and that of C18MeDCNQI-CuI mixed Langmuir films indicated the occurrence of charge-transfer(CT) reactions at the air-water interface in the latter case. These Langmuir films were deposited onto solid substrates as Langmuir-Blodgett(LB) films by the horizontal lifting method. Polarized UV-visible-IR absorption spectra and x-ray diffraction patterns recorded for the obtained LB films revealed a drastic structural change induced by the CT reactions: An interdigitated bilayer structure was suggested for the pure films, while a monolayer structure for the CT films. Furthermore, the CT degree of the major component of the mixed LB films was estimated at-1, unlike in the case of Cu-DCNQI crystals, for which the CT degree is-2/3.

Four kinds of reconstituted tobacco sheets were heated in a thermogravimetric analyzer in different atmospheres at the heating rate of 5 ◦C/min. The curves of thermogravimetry (TG), derivative thermogravimetry (DTG) and differential thermal analysis (DTA) of the reconstituted tobacco sheets were measured and compared. The profiles of the evolving product CO2 were also recorded by the thermogravimetric analyzer coupled to a Fourier transform infrared (TG-FTIR) spectrometer. The results of thermal analysis and the profiles of CO2 showed that the existence of O2 could strongly affect the thermal decomposition of the reconstituted tobacco sheets.

A new tetrathiafulvalene(TTF) derivative-4,5-bismethylthio-4',5'-bis(3-picolylthio)-tetrathiafulvalene(BMP-TTF) bearing pyridine groups was found to form stable monolayers at the air/water interface with or without the presence of AgNO3. The monolayers can be transferred onto solid substrates with LB technique. Surface pressure-area isotherms, UV-vis spectrum, FT-IR, X-ray photoelectron spectroscopy, and X-ray diffraction were used to characterize the monolayer formation and the transferred LB films. The room temperature conductivities of the LB films are about-10-7 Scm-1 and after iodine doping. they are incerased to-10-3 Scm-1

描述了含羧基活性官能团菁染料的合成，用红外光谱、紫外可见光谱和核磁共振波谱对其结构进行了表征。研究了这类染料在不同溶剂中的分子吸收光谱和荧光光谱，发现取代基和溶剂对染料的最大吸收波长有不同程度的影响。采用Nicol理论研究了此类化合物的溶剂效应，结果表明：此类化合物最大吸收峰的波数与函数f(n，e)存在良好的线性关系，最大吸收波长总体上随着溶剂折射率的增大发生红移。