Syntheses, Characterizations and Properties of Boron Carbonitride Nanotubes/Polyaniline Composites and Boron Nitride Nanotube Arrays

氮化硼纳米管在结构上虽然和碳纳米管非常相似，但是在许多性能方面的表现却不同于甚至优于碳纳米管。例如，氮化硼纳米管具有超强的抗氧化性、高的杨氏模量、高的热导、电绝缘性，这些优良的特性使得氮化硼纳米管在许多领域中有着潜在的应用价值。然而，与碳纳米管相比，氮化硼纳米管虽然近些年来逐渐受到人们的重视，但是很大部分的研究集中在理论计算方面，而制备的研究则大多集中在物理合成方面，氮化硼纳米管的化学合成才刚刚起步。本文从硼碳氮纳米管（氮化硼纳米管的前驱体）的合成与复合、氮化硼纳米管阵列的合成这两大方面展开研究和探索。具体研究成果如下： 以硼酸为硼源、氨气为氮源、碳纳米管为模板，通过高温取代反应成功地制备出...Boron nitride nanotubes (BNNTs) are similar with carbon nanotubes in structure, but, in many performance aspects, BNNTs are different from or even superior to carbon nanotubes. For example, BNNTs have superior oxidation resistance, high Young's modulus, high thermal conductivity, and electrical insulation. These excellent characteristics make BNNTs have potential applications in many fields. There...学位：理学硕士院系专业：化学化工学院化学系_无机化学学号：2052007115097

Composites of Oxidized Boron Carbonitride Nanotubes with Polyaniline: Preparation and Conductivity Studies

通讯作者地址: Huang, RB (通讯作者), Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 2. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 电子邮件地址: [email protected] precursors of boron carbonitride nanotubes with different B/N ratios were synthesized. Oxidation with nitric acid afforded oxidized boron carbonitride nanotubes (o-BCNNTs), with which composites with polyaniline (o-BCNNTs/PANI) were prepared by in situ oxidative polymerization. For one of the o-BCNNTs, composites were synthesized with a varying amount of the nanotube (up to 30 wt %), while for the rest the nanotube content was maintained at 30 wt % in each case. It has been found that the conductivity of the oxidized boron carbonitride nanotubes decreases with an increasing BIN ratio and that of the composites increases with an increasing percentage of the o-BCNNTs.National Natural Science Foundation of China 20721001,20525103 National Basic Research Program of China 2007CB81530

Activation of boron nitride nanotubes and their polymer composites for improving mechanical performance

通讯作者地址: Zhou, SJ (通讯作者),Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 2. Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China 电子邮件地址: [email protected] nitride nanotubes (BNNTs) are inappropriate for further chemical derivatization because of their chemical inertness. We demonstrate covalent activation of chemically inert BNNTs by isophorone diisocyanate (IPDI) to form isocyanate group (NCO)-terminated BNNT precursors with an 'NCO anchor' ready for further functionalization. As identified by Fourier transform infrared spectroscopy, a number of molecules or polymers with -COOH, -OH or -NH(2) groups are readily attached to the activated IPDI-BNNTs. The IPDI-BNNT-involving polymer composites have shown mechanical properties are considerably improved due to the good dispersibility of IPDI-BNNTs in the polymer matrix and the strong interfacial interactions between BNNTs and polymers. The methodology reported here provides a promising method to promote the chemical reactivity of BNNTs and covalently modify polymer nanocomposites with improved mechanical performance.973 Program 2011-CB935901 NSFC 21021061 21031004 21171140 Fundamental Research Funds for the Central Universities 201112101

From Graphene Sheets to Boron Nitride Nanotubes via a Carbon-Thermal Substitution Reaction

通讯作者地址: Xie,SY(通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, 422 Si Ming Rd, Xiamen 361005, Peoples R ChinaNSFC,21031004,21021061,973 Projects 2007CB815301 2011CB93590

An Entrant of Smaller Fullerene: C-56 Captured by Chlorines and Aligned in Linear Chains

A smaller fullerene C-56 (#913) is stabilized, isolated, and crystallographically characterized as C56Cl10. The geometric parameters of C56Cl10 imply the otherwise unstable cage of C-56 can be stabilized by chlorination through releasing its surface strains and maintaining fragmental aromaticity. An unexpected C Cl center dot center dot center dot Cl C short contact, as well as the linear alignment with pearl - necklace-shaped, is revealed in C56Cl10 crystal.NSFC,20525103,20531050,20721001,20425312, 20423002 973 Program,2007C13815301