Synthesis and characterization of poly(benzobisthiazole)s derived from halogenated phthalic acid and isophthalic acid

2002 ◽  
Vol 40 (22) ◽  
pp. 3959-3966 ◽  
Author(s):  
Roli Saxena ◽  
L. D. Kandpal ◽  
G. N. Mathur
RSC Advances ◽  
2020 ◽  
Vol 10 (57) ◽  
pp. 34943-34952
Author(s):  
Bin Zhu ◽  
Guimei Huang ◽  
Yanni He ◽  
Jisheng Xie ◽  
Tao He ◽  
...  

In this work, four novel MOFs [Cd(bipa)]n (1), {[Zn2(bipa)2]·2C2H5OH}n (2), {[Co(bipa)]·C2H5OH}n (3), {[Ni(bipa)2]·2DMA}n (4), (H2bipa = 5-(benzimidazole-1-yl)isophthalic acid) were successfully synthesized under solvothermal conditions.


2014 ◽  
Vol 937 ◽  
pp. 80-85 ◽  
Author(s):  
Haroon A.M. Saeed ◽  
Yassir A. Eltahir ◽  
Yu Min Xia ◽  
Yi Min Wang

Hydroxyl-terminated hyperbranched polyesters (HBPET) with aromatic-aliphatic structure were synthesized by melt polycondensation of isophthalic acid and pentaerythritol via A2+ B4 approach, at three different monomer mole ratios (A2/B4 =1:1, 1.5:1, 2:1, respectively). Fourier transform infrared (FTIR) spectroscopy indicated that the expected HBPET. The degree of branching of the HBPET was estimated to be between 0.39–0.45 by 1H-NMR and 13C-NMR measurement. The thermogravimetric analysis ( TGA ) measurement revealed that HBPET had a 10 % weight-loss at 350°C in N2.


2007 ◽  
Vol 10 (3) ◽  
pp. 257-260 ◽  
Author(s):  
Danilo Hansen Guimarães ◽  
Michel de Meireles Brioude ◽  
Raigens da Paz Fiúza ◽  
Luis Antônio Sanches de Almeida Prado ◽  
Jaime Soares Boaventura ◽  
...  

2008 ◽  
Vol 59 (9) ◽  
Author(s):  
Valentin Raditoiu ◽  
Luminita Wagner ◽  
Alina Raditoiu ◽  
Petrea Ardeleanu ◽  
Viorica Amariutei ◽  
...  

The article presents experimental data regarding some organic compounds as chemical intermediates with phthalic acid structure, precursors for new phthalocyanine compounds as : 4-nitrophthalimide, 4-aminophthalimide, 4-nitrophthalonitrile and 4-aminophthalonitrile, synthesized by chemical transformation of phthalimide by a series of successive reactions as : nitration and reduction, or nitration, amidation, dehydration and reduction. Reaction products were purified and characterized by means of elemental analysis, UV-Vis, fluorescence, IR, 1H-NMR, 13C-NMR spectroscopy, and thermal analysis. Structure-property relationship in the organic compounds is discussed with respect to the nature of the substituents.


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