| Carbon nanotubes (CNTs) are an important discovery in the field of material sciences, and their appearance inspires many scientists interests as well as further enrich the studies on fullerene chemistry. Due to the insolubility of CNTs in common solvents, the relevant researches fall into troubles. Various efforts, therefore, are made to increase the solubility of CNTs. And it is suggested that valuable enlightenment on the properties of CNTs can be got by the subsequent exploring work on synthesis its' derivatives.In this thesis, some important respects of CNTs are reviewed, including their optics and electrics properties, applications, solubility as well as chemical modification techniques etc.. Meanwhile, the quenching effects of amine and alcohol are investigated on CNTs-Aniline charge transfer complex (CNT-An CTC). For the first time a new method is developed to determine water content in acetone. Additionally, some preliminary experiments are finished concerning with chemical modification of CNTs.Chapter 1 reviews the preparation, characteristics, and applications of carbon nanotube (CNT). Herein tips opening, chemical modification , water-solubilization, and chemical luminescence are shown in detail. According to the theories and experimental studies, we will modify CNT by opening tips and produce CNT molecular tweezers, which can recognise molecule through hydrogen bonds and π-π stacking interaction of the aromatic ring. We also predict the way in which CNT molecular tweezers identify molecule and its identification capabilities, questing for the approach that can be used to prepare new type chemical sensors.Chapter 2 Owing to their unique structure and special properties, carbon nanotubes (CNTs) recently have attracted much scientific interest in the field of material. However, the low solubility of CNTs in most organic solvents hinders its wide study and application, and the study on the solubilization has become one of hot focus in CNT science. It shows that the solubility of CNTs can be increased in water or organic solvents by straight dispersion in single solvent, charge transfer process between electron donor and acceptor(CNTs), and wrapeffect of soluble polymers or cylindrical micelle etc.. Chemical functionalization at the end or side-wall of CNTs might play a vital role in improving its dispersion ability, as well as developing new materials with special function group, therefore, it is also really attractive to further investigate more chemical modification methods.Chapter 3 After reflux procedures, carbon nanotube (CNT) and aniline (AN) can form the charge transfer complex (CTC) of CNT-AN. The corresponding fluorescence emission peaks lied at 564nm and 606nm, respectively, with the excitation wavelength of 516nm in the acetone solution. Herein we analyze the quenching effects of various amines on CNT-AN CTC fluorescence in detail. The experimental results showed that amines, with different alkyl, alkyl group number as well as amino group numbers, have distinct effects on the CTC fluorescence. In addition, the quenching mechanism is also discussed in this paper.Chapter 4 Carbon nanotube-aniline charge transfer complex (CNT-AN CTC) is prepared by refluxing the mixture of single-walled or multi-walled CNT (SWNT or MWNT) with aniline. After removing the unreacted aniline under vaccum, the black solid product is obtained. The structural properties of the product are primarily characterized by various spectral techniques. The stock solution of CNT-AN CTC is prepared with acetone. The concentration self-quenching of its own fluorescence is observed. The solvent polarity has remarkable influence on the fluorescence spectra of CNT-AN CTC, and there appear dramatic shifts towards red region with increasing polarity, especially with dielectric constants or formation of H-bound. Fluorescence of SWNT- or MWNT-AN CTC are quenched more remarkably by microamount of water in acetone, and the isoemission point at 591nm indicates that there exists a good chemical equilibrium between th...
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