Results 71 to 80 of about 86,061 (298)

Crystal structures of two new carbazole derivatives: 12-(4-nitrophenyl)-7-phenylsulfonyl-7H-benzofuro[2,3-b]carbazole and 2-methyl-4-(4-nitrophenyl)-9-phenylsulfonyl-9H-thieno[2,3-b]carbazole

Acta Crystallographica Section E: Crystallographic Communications, 2016
The title compounds, C30H18N2O5S, (I), and C27H18N2O4S2, (II), are carbazole derivatives with a phenylsulfonyl group and a nitrophenyl group attached to the carbazole moiety in identical positions in both molecules.
K. Swaminathan, P. Narayanan, K. Sethusankar, Velu Saravanan, Arasambattu K. Mohanakrishnan   +4 more
doaj   +1 more source

Random laser from engineered nanostructures obtained by surface tension driven lithography

, 2013
The random laser emission from the functionalized thienyl-S,S-dioxide quinquethiophene (T5OCx) in confined patterns with different shapes is demonstrated. Functional patterning of the light emitter organic material in well defined features is obtained by
Barbarella, G., Conti, C., Di Maria, F., Ghofraniha, N., Gigli, G., Viola, I.   +5 more
core   +1 more source

Methyl 2-(4-ferrocenylbenzamido)thiophene-3-carboxylate and ethyl 2-(4-ferrocenylbenzamido)-1,3-thiazole-4-acetate, a unique ferrocen [PDF]

, 2005
The conformations and hydrogen bonding in the thiophene and thiazole title compounds, [Fe(C₅H₅)(C₂₀H₁₄NO₃S)], (I), and [Fe(C₅H₅)(C₁₉H₁₇N₂O₃S)], (II), are discussed.
Alley, Steven, Gallagher, John F., Hooper, Vincent M., Kenny, Peter T.M., Lough, Alan J.   +4 more
core   +1 more source

Iridium-Catalyzed Silylation of Five-Membered Heteroarenes: High Sterically Derived Selectivity from a Pyridyl-Imidazoline Ligand. [PDF]

, 2020
The steric effects of substituents on five-membered rings are less pronounced than those on six-membered rings because of the difference in bond angles. Thus, the regioselectivities of reactions of five-membered heteroarenes that occur with selectivities
Hartwig, John F, Karmel, Caleb, Kharitonova, Elena V, Rubel, Camille Z   +3 more
core   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

Advanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally, Paul L. Burn, Paul E. Shaw   +2 more
wiley   +1 more source

A review on synthetic routes and pharmacological applications of thiophene clubbed benzimidazoles

Discover Chemistry
The heterocyclic moiety benzimidazole holds significant importance as a primary “biolinker” in various synthetic strategies employed for the development of bioactive compounds.
Binitha Sreedharan Daisylet, Selwin Joseyphus Raphael, C. Justin Dhanaraj, Arish Dasan   +3 more
doaj   +1 more source

Precisely tuning the electronic states of organic polymer electrocatalysts via thiophene-based moieties for enhanced oxygen reduction reaction

iScience
Summary: Optimizing molecular structures in oxygen reduction reaction (ORR) is crucial for enhancing catalytic efficiency and stability, particularly with respect to the effective adsorption and conversion of reaction intermediates.
Dongye Li, Binbin Wang, Kunpeng Zheng, Hongni Chen, Yali Xing, Yanzhi Xia, Xiaojing Long   +6 more
doaj   +1 more source

Crystal structures of (5RS)-(Z)-4-[5-(furan-2-yl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl]-4-oxobut-2-enoic acid and (5RS)-(Z)-4-[5-(furan-2-yl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl]-4-oxobut-2-enoic acid

Acta Crystallographica Section E: Crystallographic Communications, 2016
The title compounds, C17H14N2O4 (I) and C15H12N2O4S (II), possess very similar molecular geometries. In both molecules, the central 1,3,5-trisubstituted dihydropyrazole ring adopts an envelope conformation.
Kseniya K. Borisova, Flavien A. A. Toze, Nniyaz Z. Yagafarov, Fedor I. Zubkov, Pavel V. Dorovatovskii, Yan V. Zubavichus, Victor N. Khrustalev   +6 more
doaj   +1 more source

Novel methylotrophic bacteria isolated from the River Thames (London, UK) [PDF]

, 2008
Enrichment and elective culture for methylotrophs from sediment of the River Thames in central London yielded a diversity of pure cultures representing several genera of Gram-negative and Gram-positive bacteria, which were mainly of organisms not ...
Alves, Anesti, Anesti, Arfman, Bamforth, Barrow, Battistuzzi, Beji, Bergey, Bernardet, Bernardet, Borodina, Borodina, Boucher, Brautaset, Brocks, Buonaurio, Cawse, Cercel, Dedysh, Dedysh, Dijkhuizen, Dijkhuizen, Duménil, Frankland, Frankland, Fredericq, Galkin, Ghosh, Ginige, Green, Hartmans, Holt, Hormisch, Jakobsen, Kalyuzhnaya, Kanagawa, Kato, Kato, Kelley, Kelly, Kelly, Kodaka, Levering, Lidstrom, Lidstrom, Loew, McDonald, McDonald, Meganathan, Migula, Mitsui, Moosvi, Moosvi, Nazina, Nercessian, Nesvera, Nishio, Orita, Padden, Radajewski, Radajewski, Reizer, Schaeffer, Schäfer, Smith, Urakami, Wang, Ward, Ward, Warner, Wayne, Whittenbury, Yasueda, Yoon, Yurimoto   +75 more
core   +1 more source

Solvent‐Mediated Reactivity Control of Lewis‐Paired Dopants as a Versatile Strategy for Tunable and Stable Doping of Organic Semiconductors

Advanced Materials, EarlyView.
Solvent‐mediated reactivity control of Lewis‐paired dopants enables highly efficient, finely tunable, and stable doping of organic semiconductors. The optimally doped semiconductor films exhibit superior thermoelectric performance and doping stability, feature delocalized polarons along structurally ordered polymer backbones, and outperform ...
Sang Beom Kim, Eui Hyun Suh, Taek Seong Lee, Andreas W. Erhardt, Iain McCulloch, Jaeyoung Jang   +5 more
wiley   +1 more source