Thiophene Compounds. XII. On the Fluorescence of Thiophene Compounds.

Liquid Crystalline Compounds in the Thiophene Series, Part 11+ Liquid Crystalline Thiophene Carboxylic Esters

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Investigations of New Low Gap Conjugated Compounds Based on Thiophene-Phenylene as Solar Cells Materials

The research in new organic π-conjugated molecules with specific properties has become one of the most interesting topics in fields of materials chemistry. These materials are promising for optoelectronic device technology such as solar cells. On the other hand, the use of low band gap materials is a viable method for better harvesting of the solar spectrum and increasing its efficiency. The co...

Excited-state dynamics of thiophene substituted betaine pyridinium compounds.

This work deals with the photophysics of novel pyridinium betaine based on 2-pyridin-1-yl-1H-benzimidazole (SBPa) substituted symmetrically by mono- (Th2SBPa) and bi-thiophene fragments (Th4SBPa). The study is based on a combination of steady-state, femtosecond transient absorption spectroscopic measurements supported by PCM-(TD)DFT calculations. It is found that the two step ICT process (S0 → ...

investigations of new low gap conjugated compounds based on thiophene-phenylene as solar cells materials

Synthesis and antitumor activity of some fused heterocyclic compounds based on cyclohepta[b]thiophene derivatives

The reaction of 5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene derivatives 3a,b with acetic anhydride in presence of glacial acetic acid produced the acetamido derivatives 4a,b. Cyclization of the latter compounds gave the annulated products 5a,b. Compounds 3a,b reacted with one of the activated methylene groups of malononitrile (2a) and afforded compounds 7a,b through internal cyclization of the...