The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential s...The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.展开更多
Molecular precursors phthalimidomethyl phthalic acid and phthalimidomethyl phthalonitrile were synthesized for the first time and both were able to condensation to form tetra phthalimidomethyl phthalocyanine zinc thro...Molecular precursors phthalimidomethyl phthalic acid and phthalimidomethyl phthalonitrile were synthesized for the first time and both were able to condensation to form tetra phthalimidomethyl phthalocyanine zinc through “ammomium molybdate method” and “DBU method ”respectively. The precursors and title compounds were characterized by element analysis, IR, UV/Vis as well as NMR. The two synthesis methods were compared, the result indicated that using the phthalimidomethyl phthalic acid as precursor through the former method, the product was an isomer with C4h symmetry, while using phthalimidomethyl phthalonitrile as precursor through the latter method, the products were a mixture of different isomers.展开更多
文摘The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.
文摘Molecular precursors phthalimidomethyl phthalic acid and phthalimidomethyl phthalonitrile were synthesized for the first time and both were able to condensation to form tetra phthalimidomethyl phthalocyanine zinc through “ammomium molybdate method” and “DBU method ”respectively. The precursors and title compounds were characterized by element analysis, IR, UV/Vis as well as NMR. The two synthesis methods were compared, the result indicated that using the phthalimidomethyl phthalic acid as precursor through the former method, the product was an isomer with C4h symmetry, while using phthalimidomethyl phthalonitrile as precursor through the latter method, the products were a mixture of different isomers.
