01965nas a2200253 4500008004100000022001400041245011400055210006900169260009800238300001200336490000700348520099500355653000601350653005601356653002801412653001401440653002001454100001601474700001801490700002101508700002801529700002301557856013101580 2005 eng d a0959-810300aSynthesis and characterization of aromatic polyamides containing an s-triazine ring with thiophenoxy linkages0 aSynthesis and characterization of aromatic polyamides containing aTHE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLANDbJOHN WILEY & SONS LTDcMAR a569-5750 v543 a

A series of aromatic polyamides containing an s-triazine ring with thiophenoxy linkages was synthesized from two new diacids, namely 2,4-bis-(4-carboxyphenoxy)-6-thiophenoxy-s-triazine and 2,4-bis-(3-carboxyphenoxy)-6-thiophenoxy-s-triazine, and commercially available aromatic diamines by using Yamazaki's phosphorylation reaction. The polyamides were obtained in good yields and were characterized by solubility tests, viscosity measurements, FTIR, H-1 and C-13 NMR spectroscopy, X-ray diffraction studies and thermogravimetric analysis. The polyamides were found to have inherent viscosities in the range of 0.35 to 0.56 dl g(-1) in N,N-dimethylacetamide (DMAc) at 30 +/- 0.1 degreesC. All the polyamides were readily soluble in solvents such as DMAc, N-methyl-2-pyrrolidone (NMP), N,N-dimethylformamide (DMF) and m-cresol. Thermogravimetric analysis of the polyamides indicated no weight loss below 345 degreesC under a nitrogen atmosphere. (C) 2004 Society of Chemical Industry.

10a210a4-bis-(3/4-carboxyphenoxy)-6-thiophenoxy-s-triazine10adirect polycondensation10apolyamide10as-triazine ring1 aPal, R., R.1 aPatil, P., S.1 aSalunkhe, M., M.1 aMaldar, Noormahamad, N.1 aWadgaonkar, P., P. uhttps://library.ncl.res.in/content/synthesis-and-characterization-aromatic-polyamides-containing-s-triazine-ring-thiophenoxy-015484nas a2200205 45000080041000002450110000412100069001512600008002203000012002284900007002405201477800247100002215025700001715047700001915064700001815083700001815101700001715119700001815136856012415154 2021 eng d00aSupercapacitive performance of SILAR grown Mn3O4 nanoclusters: effect of cationic precursor concentration0 aSupercapacitive performance of SILAR grown Mn3O4 nanoclusters ef cAUG a145-1580 v723 a

Herein, we have investigated the effect of cationic precursor (manganese chloride tetrahydrate) concentration on the electrochemical performance of successive ionic layer adsorption and reaction (SILAR)-deposited Mn3O4 thin films. The concentration of the cationic precursor was varied from 0.05 to 0.15 M, and its effect on physicochemical and electrochemical properties was studied. X-ray diffraction and X-ray photoelectron spectroscopy analyses confirmed that Mn3O4 has a tetragonal structure with Mn2+ and Mn3+ oxidation states. SEM micrographs revealed that nanoclusters of Mn3O4 with an average size of ~200 nm were formed. Moreover, transmission electron microscopy analysis revealed that these nanoclusters were formed from tiny square nanoplates with a size of ~40 nm. Electrochemical studies of the synthesized Mn3O4 thin films were recorded in a three-electrode system, which suggests that 0.1 M cationic precursor concentration has a good electrochemical signature with a specific capacitance of 470 F/g at 1 mA/cm2 current density in 1 M Na2SO4 aqueous electrolyte. The cyclic stability offered was appreciable, with capacitive retention of 75% up to 10,000 CV cycles scanned at 100 mV/s. The charge storage kinetics of the SILAR-grown Mn3O4 thin film were investigated. With systematic study we concluded that, the molarity of the cationic precursor plays a vital role in the porosity and microstructure which drastically affects the electrochemical performance.

1 aBeknalkar, S., A.1 aTeli, A., M.1 aHarale, N., S.1 aPatil, D., S.1 aSutar, J., R.1 aShin, J., C.1 aPatil, P., S. uhttps://library.ncl.res.in/content/supercapacitive-performance-silar-grown-mn3o4-nanoclusters-effect-cationic-precursor