Molecular structure of hybrid Triaryl amine/poly vinyl chloride gels
We have recently shown that hybrid materials can be prepared from organogelators and poly vinyl chloride (PVC) thermoreversible gels. Of interest are Tri-aryl amine (TATA) molecules that self-assemble into long fibrils, which produces electrically-conducting networks in appropriate solvents. While PVC is an excellent insulating polymer, it becomes conducting after incorporation of the TATA organogel in tetra chloroethane. In bromobenzene, we have observed a crystalline form that differs from that in the solid state. Due to the very high content of chlorine atoms in tetrachloroethane, we could not study the crystalline structure by X-ray diffraction because of the very high photon absorption. From thermodynamic investigations, it is suspected that the crystalline form in this solvent is also different, and possibly a TATA/solvent molecular compound is formed. We further suspect that the conductivity in this solvent arises from this crystalline form. To overcome the problem of absorption, neutron diffraction is the appropriate tool. Also, by using hydrogenous solvents and deuterated solvents, one can decide whether the crystal structure consists of a TATA/solvent molecular compound.
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GUENET Jean Michel; DEME Bruno and YAO Xiao. (2021). Molecular structure of hybrid Triaryl amine/poly vinyl chloride gels. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2058
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