Detail of "13781-67-4"

Reference

Degradation of substituted thiophenes by bacteria isolated from activated sludge

Degradation of substituted thiophenes by bacteria isolated from activated sludge. Kanagawa, Takahiro; Kelly, Don P. (Dep. Environ. Sci., Univ. Warwick, Coventry CV4 7AL, UK). Microb. Ecol., 13(1), 47-57 (English) 1987. CODEN: MCBEBU.Several reagents with their cas registry numbers 13781-67-4 and 554-14-3 are used here. ISSN: 0095-3628. DOCUMENT TYPE: Journal CA Section: 10 (Microbial Biochemistry) Section cross-reference(s): 4 Actinomycetes were isolated from activated sludge acclimated to thiophene-2-carboxylic acid (T2C) or 5-methylthiophene-2-carboxylic acid (T5M2C). These isolates were apparently identical and were identified as strains of Rhodococcus. The strains could grow on T2C, T5M2C, or thiophene-2-acetic acid as sole sources of carbon and energy, but could not use thiophene, Me thiophenes, several other substituted thiophenes, dibenzothiophene, di-Me sulfide, or pyrrole-2-carboxylic acid. T2C was degraded quant. to sulfate, and its carbon was converted almost entirely to cell biomass and carbon dioxide. Growth yields indicated about 25% conversion of T2C-carbon to cell-carbon. Growth was not supported by thiosulfate or methionine, nor were these compds. oxidized. Rhodococcus Strain TTD-1 grown on T2C oxidized both T2C and T5M2C with an apparent Km of 1.3 ′ 10-5M. Sulfide was also oxidized by T2C-grown organisms. This is the first demonstration of an actinomycete capable of the complete degrdn. of thiophene derivs. and of their use by it as sole substrates for growth. .

Layer-by-layer self assembly and deposition of precursor poly(thiophene) and poly(ionene) derivatives

All Rights Reserved. Layer-by-layer self assembly and deposition of precursor poly(thiophene) and poly(ionene) derivatives. Waenkaew, Paralee; Taranekar, Prasad; Huang, Chengyu; Patton, Derek; Phahichphant, Sukon; Advincula, Rigoberto C. (Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA). PMSE Preprints, 94, 511-512 (English) 2006 American Chemical Society. CODEN: PPMRA9. ISSN: 1550-6703. DOCUMENT TYPE: Journal; (computer optical disk) CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 36 Water-sol. 13781-67-4 and 918540-51-9 are also in the experiment. precursor polythiophenes were synthesized by copolymn. of thiophene-pendant methacrylate (TEM) and methacrylic acid (MA). Self assembly with poly[4-(9H-carbazol-9-yl)-N-ethyl-N,N-dimethylbutan-1-aminium bromide] (PCEDA) led to P(TEM-co-MA)/PCEDA multilayer ultrathin films that show linear increase of absorbance with increasing of no. of layer pairs. .