Academic literature on the topic 'Thiophens'

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Journal articles on the topic "Thiophens"

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Kirret, O., and L. Lahe. "VERGLEICH VON INFRAROTSPEKTREN DES 2D-THIOPHENS UND DES THIOPHENS MIT DEN RAMANSPEKTREN DES THIOPHENS." Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry 34, no. 2 (1985): 154. http://dx.doi.org/10.3176/chem.1985.2.13.

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Beyer, H., S. Melde, and K. Dittrich. "Hydrazine des Thiophens und Oxazols." Zeitschrift für Chemie 1, no. 6 (2010): 191. http://dx.doi.org/10.1002/zfch.19610010612.

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Zander, Maximilian. "Zur Photolumineszenz von Benzologen des Thiophens." Zeitschrift für Naturforschung A 40, no. 5 (1985): 497–502. http://dx.doi.org/10.1515/zna-1985-0514.

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Fluorescence and phosphorescence spectra, fluorescence and phosphorescence quantum yields and phosphorescence lifetimes of the benzologues I -V of thiophene have been measured in ethanol at 77 K. By comparing the energies of the lowest triplet states of the molecules with those of corresponding hydrocarbons it is concluded that the sulphur atoms act like substituents and are not equivalent to aromatic double bonds. The rate of the radiationless deactivation of the lowest triplet state depends on the energy gap Δ E(T1 - S0) in accordance with the Siebrand relation. An unexpected small intraannu
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Margl, Lilla, Andreas Tei, István Gyurján, and Michael Wink. "GLC and GLC-MS Analysis of Thiophene Derivatives in Plants and in in vitro Cultures of Tagetes patula L. (Asteraceae)." Zeitschrift für Naturforschung C 57, no. 1-2 (2002): 63–71. http://dx.doi.org/10.1515/znc-2002-1-211.

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The occurrence of thiophenic compounds in diverse plant organs and in in vitro root-, callus- and cell suspension cultures of Tagetes patula cv. Carmen was investigated using capillary GLC and GLC-MS. The separation of thiophenes by capillary GLC and the group specific MS fragmentation with the typical sulfur isotope peaks allowed the unequivocal assignment of individual thiophenes in complex mixtures, even when occurring in traces and in the presence of different geometrical isomers. The extracts of Tagetes patula cv. Carmen contained the following 8 thiophene compounds: 5-(3-buten-1-ynyl)-2,
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Liu, Wei, Xin Yu, Yahui Li, and Chunxiang Kuang. "Palladium-catalyzed oxidative CH/CH cross-coupling of pyridine N-oxides with five-membered heterocycles." Chem. Commun. 50, no. 66 (2014): 9291–94. http://dx.doi.org/10.1039/c4cc04129a.

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Using Ag<sub>2</sub>CO<sub>3</sub> as an additive, we developed the Pd-catalyzed intermolecular C–H/C–H cross-coupling of pyridine N-oxides with five-membered heterocycles such as 1-benzyl-1,2,3-triazoles, thiophens and furans.
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Fabian, Jüurgen. "Die π-Elektronenstruktur des 2-Dimethylamino-thiophens". Zeitschrift für Chemie 8, № 7 (2010): 274–75. http://dx.doi.org/10.1002/zfch.19680080727.

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Irgashev, Roman A., and Nikita A. Kazin. "Synthesis of Thieno[3,2-b]thiophenes from 2,5-Dicarbonyl 3-Nitrothiophenes via Nucleophilic Aromatic Substitution of the Nitro Group with Thiolates." Organics 5, no. 4 (2024): 507–19. http://dx.doi.org/10.3390/org5040027.

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In this study, we developed an efficient strategy for constructing thieno[3,2-b]thiophene molecules from 3-nitrothiophenes, containing carbonyl fragments at the C-2 and C-5 atoms, by nucleophilic aromatic substitution of the nitro group in these substrates. It was shown that the reaction of 3-nitrothiophene-2,5-dicarboxylates with thiophenols, thioglycolates and 2-mercaptoacetone in the presence of K2CO3 proceeds rapidly via nucleophilic displacement of the nitro group with the formation of 3-sulfenylthiophene-2,5-dicarboxylates. Further treatment of the resulting thiophene-2,5-dicarboxylates,
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Duc, Dau Xuan. "Recent Progress in the Synthesis of Benzo[b]thiophene." Current Organic Chemistry 24, no. 19 (2020): 2256–71. http://dx.doi.org/10.2174/1385272824999200820151545.

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: Benzo[b]thiophenes are aromatic heterocyclic compounds containing benzene and thiophene rings. This class of heterocycles is present in a large number of natural and non-natural compounds. Benzo[b]thiophene derivatives have a broad range of applications in medicinal chemistry such as antimicrobial, anticancer, antioxidant, anti-HIV and antiinflammatory activities. The use of benzo[b]thiophene derivatives in other fields has also been reported. Various benzo[b]thiophenes compounds have been employed as organic photoelectric materials, while several benzo[b]thiophenes have been used as organic
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Kalpesh, Thaker, T. Chovatia P., Vyas Dipen, and S. Joshi H. "Synthesis and pharmacological evaluation of 2-(3' ,5' -dichlorobenzo[b]thiophen-2' -yl)-5-aryl-1,3,4-oxadiazoles and 2-arylsulfonylhydrazinocarbonyl- 3,5-dichlorobenzo[b ]thiophenes." Journal of Indian Chemical Society Vol. 82, Nov 2005 (2005): 1009–10. https://doi.org/10.5281/zenodo.5824940.

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Department of Chemistry, Saurashtra University, Rajkot-360 005, India <em>E-mail</em> : drhsjoshi@yahoo.com Fax: 91-281-2578512 <em>Manuscript received 16 February 2005, revised 23 June 2005, accepted 18 July 2005</em> 2-(3&#39;,5&#39;-Dichlnrobenzo[<em>b</em>]thiophen-2&#39;-yl)-5-aryl&middot;1,3,4-oxadiazoles (2a-1) were obtained from the 2-hydrazino carobonyl-3,5-dichlorobenzo[<em>b</em>]thiophene (1) by the reaction with different arylsulfonyl chlorides afforded the corresponding 2-arylsulfonylhydrazinocarbony 1-3,5-dichlorobenzo[<em>b</em>]thiophenes (3a&middot;1). The structures of newly
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Boyd, Derek R., Narain D. Sharma, Paul J. Stevenson, Patrick Hoering, Christopher C. R. Allen, and Patrick M. Dansette. "Monooxygenase- and Dioxygenase-Catalyzed Oxidative Dearomatization of Thiophenes by Sulfoxidation, cis-Dihydroxylation and Epoxidation." International Journal of Molecular Sciences 23, no. 2 (2022): 909. http://dx.doi.org/10.3390/ijms23020909.

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Enzymatic oxidations of thiophenes, including thiophene-containing drugs, are important for biodesulfurization of crude oil and drug metabolism of mono- and poly-cyclic thiophenes. Thiophene oxidative dearomatization pathways involve reactive metabolites, whose detection is important in the pharmaceutical industry, and are catalyzed by monooxygenase (sulfoxidation, epoxidation) and dioxygenase (sulfoxidation, dihydroxylation) enzymes. Sulfoxide and epoxide metabolites of thiophene substrates are often unstable, and, while cis-dihydrodiol metabolites are more stable, significant challenges are
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Dissertations / Theses on the topic "Thiophens"

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Höhne, Susanne. "Untersuchungen zur kationischen Polymerisation von Vinylmonomeren des Furans und Thiophens." Doctoral thesis, Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200501585.

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In der vorliegenden Arbeit wurde die kationische Polymerisation der heterocyclischen Monomere 2-Vinylfuran, 5-Methyl-2-vinylfuran und 2-Vinylthiophen in der Gegenwart silikatischer Partikel untersucht. Produkte dieser Reaktion sind Polymer/SiO2-Hybridpartikel und lösliche Polymere. Zu ihrer Untersuchung wurden NMR-spektroskopische Verfahren, IR-, UV/Vis-, MALDI TOF-Spektroskopie, Elementaranalyse und GPC angewandt. Damit gelang es, die Struktur der Polymere weitgehend aufzuklären. Der Einfluß der Reaktionsbedingungen auf die Ergebnisse der kationischen Oberflächenpolymerisation wurde untersuch
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Heying, Melanie Jean. "Photogenerated reactive intermediates from thiophene ylides thiophenes, oxenes and carbenes, oh my /." [Ames, Iowa : Iowa State University], 2008.

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Jiang, Tingming. "Adsorption of chalcogen-based aromatic organic molecules on metal and dielectric surfaces by self-assembly and molecular beam expitaxy." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS581.

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Dans cette thèse, on a étudié la formation de monocouches auto-assemblées de différentes molécules de chalcogénure et de films minces de semiconducteurs organiques. Leurs caractéristiques électroniques et structurelles ont été étudiées principalement par la spectroscopie de photoélectron à rayons X à base de rayonnement synchrotron, la spectroscopie d’adsorption de rayons X à proximité de seuil, la microscopie à force atomique et la diffraction d'électrons à faible énergie. En outre, les caractéristiques d'adsorption du sélénium et du soufre ont été étudiées comme complément à l'étude des adso
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Mahmoud, Ahmed B. Abdelwahab. "Synthesis and reactivity of 3-acetyl-2-aminothiophenes." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0318/document.

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Un intérêt grandissant pour le système thiéno[2,3-b] pyridine est apparu ces trois dernières décennies. De nombreux chercheurs ont présentés des composés basés sur ce système comme traitement possible de l'anxiété et de la dépression, comme bactéricide, contre l'inflammation et la leishmania, la malaria et les maladies auto-immunes. Les ortho-amino acyl thiophènes sont des produits de départ possible pour synthétiser ces motifs. L'accès à ce type de composés sera la première étape de ce travail. Nous décrivons ici la première synthèse de 3-acétyl-2-aminothiophènes en utilisant la réaction à 3
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Ahmed, Maqsood. "Ultra high resolution crystallography of small molecules and proteins." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0024/document.

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La cristallographie des rayons-X à ultra-haute résolution permet d'analyser la distribution de charge des molécules et d'étudier les interactions intermoléculaires avec précision. Des études structurales de plusieurs composés à base de thiophène ont été menées à bien, et le phénomène de désordre a été discuté. Des analyses expérimentales et théoriques de la densité de charge de deux molécules importantes ont été réalisées en utilisant le modèle d'atome multipolaire. Un nouveau modèle d'atomes virtuels est également testé : il permet le calcul rapide des propriétés électrostatiques. La liaison
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Skrzypski, Jonathan. "Nouveaux oxydes nanostructurés pour la désulfuration : cinétique et mécanismes d'interaction avec le sulfure d'hydrogène et le thiophène." Thesis, Dijon, 2011. http://www.theses.fr/2011DIJOS035.

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Ce travail de thèse s’inscrit dans le contexte de la désulfuration par absorption des gaz utilisables dans des technologies émergentes comme les piles à combustible ou le procédé Fischer-Tropsch. Cette purification peut être réalisée à des températures modérées (200-300°C) sans régénération d'échantillon. L’absence de traitements à haute température permet d'envisager l'utilisation des solides nanostructurés qui devraient montrer naturellement une réactivité élevée. En fonction du schéma précis du procédé, on pourra être amené à éliminer des molécules de nature différente : H2S ou des molécule
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Thomas, Mary Solly. "Complexes of thiophene derivatives as potential metallomesogens." Thesis, Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-12072006-171634.

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Neau, Elisabeth. "Oxydation hépatique des dérivés du thiophène : enzymes impliquées et réactions biomimétiques." Paris 5, 1989. https://hal.archives-ouvertes.fr/tel-01529447v2.

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Begouin, Agathe. "Réalisation de couplages pallado-catalysés en série thiophénique : synthèse de composés biologiquement actifs." Thesis, Metz, 2007. http://www.theses.fr/2007METZ020S/document.

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La N-arylation d'amines primaires et secondaires par couplages C-N palladocatalysés de Buchwald- Hartwig est une méthode efficace de synthèse d'arylamines. Jusqu'à présent, la synthèse d'arylamines en série thiophénique n'avait été que peu décrite. Nous nous sommes ainsi intéressés à la réactivité de dérivés substitués des 2- et 3-bromothiophènes dans les couplages C-N palladocatalysés. Par la suite, nous avons également étudié la réactivité d'aminothiophènes dans ces mêmes réactions de couplage. Un grand nombre d'arylamines a ainsi pu être synthétisé. La synthèse de thiénopyrimidinones a auss
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Uhrich, Christian. "Strategien zur Optimierung organischer Solarzellen: Dotierte Transportschichten und neuartige Oligothiophene mit reduzierter Bandlücke." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1209113927393-76737.

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Organische Solarzellen besitzen das Potential für leichte und zugleich flexible photovoltaische Anwendungen, die kostengünstig hergestellt werden können und damit einen Beitrag zur Verminderung der Emission von Kohlendioxid, Methan und Stickoxiden leisten können. Zur Herstellung von organischen Solarzellen werden nur geringe Mengen der organischen Materialien benötigt und die Prozessierung findet bei vergleichsweise geringen Temperaturen statt, was die Abscheidung auf z. B. Plastikfolie ermöglicht. Man unterscheidet drei Arten von organischen Solarzellen. Erstens, Solarzellen bestehend aus kle
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Books on the topic "Thiophens"

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Joule, John A., ed. Thiophenes. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-07824-3.

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1928-, Gronowitz Salo, ed. Thiophene and its derivatives. Wiley, 1985.

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1928-, Gronowitz Salo, ed. Thiophene and its derivatives. Wiley, 1992.

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1928-, Gronowitz Salo, ed. Thiophene and its derivatives. Wiley, 1986.

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1928-, Gronowitz Salo, ed. Thiophene and its derivatives. Wiley, 1986.

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Salo, Gronowitz, ed. Thiophene and its derivatives. Wiley, 1985.

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Perepichka, Igor F., and Dmitrii F. Perepichka, eds. Handbook of Thiophene-Based Materials. John Wiley & Sons, Ltd, 2009. http://dx.doi.org/10.1002/9780470745533.

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F, Perepichka Dmitrii, ed. Handbook of thiophene-based materials. Wiley, 2009.

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Schiefer, Daniel. Thiophen-basierte konjugierte Polymere für optoelektronische Anwendungen. Universität, 2016.

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Vinton, Steven John. Surface specific characterisation of thiophene-generic adsorption systems. University of Manchester, 1996.

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Book chapters on the topic "Thiophens"

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Benders, P. H., D. N. Reinhoudt, and W. P. Trompenaars. "Cycloaddition Reactions of Thiophenes, Thiophene 1-Oxides, and 1,1-Dioxides." In Chemistry of Heterocyclic Compounds: A Series Of Monographs. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470187234.ch10.

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Joule, John Arthur. "Thiophenes." In Topics in Heterocyclic Chemistry. Springer International Publishing, 2014. http://dx.doi.org/10.1007/7081_2014_130.

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Lide, David R. "Thiophene." In Handbook of Organic Solvents. CRC Press, 2024. http://dx.doi.org/10.1201/9781003575191-444.

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Livi, Francesco, Jon E. Carlé, and Eva Bundgaard. "Thiophene in Conducting Polymers: Synthesis of Poly(thiophene)s and Other Conjugated Polymers Containing Thiophenes, for Application in Polymer Solar Cells." In Topics in Heterocyclic Chemistry. Springer International Publishing, 2014. http://dx.doi.org/10.1007/7081_2014_128.

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Barnes, George, and Chin Pang Yau. "Poly(thiophene)s." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_120-1.

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Ryabova, Victoria, and Luba Ignatovich. "Thiophene Substitution Chemistry." In Topics in Heterocyclic Chemistry. Springer International Publishing, 2014. http://dx.doi.org/10.1007/7081_2014_134.

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Wohlfarth, Christian. "Viscosity of thiophene." In Viscosity of Pure Organic Liquids and Binary Liquid Mixtures. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49218-5_83.

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Li, Jie Jack. "Fiesselmann thiophene synthesis." In Name Reactions. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03979-4_104.

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Li, Jie Jack. "Paal thiophene synthesis." In Name Reactions. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03979-4_200.

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Bohlmann, F., and C. Zdero. "Naturally Occuring Thiophenes." In Chemistry of Heterocyclic Compounds: A Series Of Monographs. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470187234.ch3.

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Conference papers on the topic "Thiophens"

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Hubbard, Arthur T., and James H. White. "Surface Spectroscopy: LEED, EELS and AES." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91264.

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Abstract Applications of low energy electron diffraction (LEED), Auger electron spectroscopy (AES), and electron energy loss spectroscopy (EELS) in the study of corrosion processes and corrosion inhibitor films are described. Studies in our laboratories of surface phemomena related to the depassivation, electrodissolution and corrosion of Fe-Ni-Cr alloys and the formation of polymer films on well- defined electrode surfaces will be presented to illustrate techniques and applications. For example, exposure of clean Fe-Cr-Ni(111) and Fe-Cr-Ni(111) to aqueous electrolytes forms an amorphous, hydr
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Marinakis, Ioannis, and Eleftherios Kapetanakis. "Performance Comparison of Organic Transistors with Different Poly(3-Hexyl Thiophene) Solvents." In 2024 5th International Conference in Electronic Engineering, Information Technology & Education (EEITE). IEEE, 2024. http://dx.doi.org/10.1109/eeite61750.2024.10654442.

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Kim, O. K., A. Fort, M. Barzoukas, and J. M. Lehn. "Nonlinear Optical Chromophores Containing Fused Terthiophene As A New Type of Electron Relay." In Organic Thin Films for Photonic Applications. Optica Publishing Group, 1997. http://dx.doi.org/10.1364/otfa.1997.fa.3.

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Thiophene-based D-A molecules have been actively sought recently, exploiting interesting results indicating that the incorporation of a thiophene unit or the replacement of a phenylene moiety by thienylene in the relay of a D-A molecule enhanced the molecular hyperpolarizability (μβ(0)) significantly (1-3). Accordingly, it is expected that oligothiophenes give a larger contribution to the μβ(0) compared to oligophenylenes. As in the case of polyenes, the rigidification of thiophenes (by cyclization) has also been known to enhance charge-transfer in push-pull D-A molecules, as indicated by a ba
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Balzer, Frank, Manuela Schiek, Arne Lützen, Katharina Al-Shamery, and Horst-Günter Rubahn. "Growth of nanofibers from thiophenes, thiophene-phenylenes, and phenylenes: a systematic study." In Integrated Optoelectronic Devices 2007, edited by James G. Grote, Francois Kajzar, and Nakjoong Kim. SPIE, 2007. http://dx.doi.org/10.1117/12.700043.

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Kim, Mi-Ra, Seung-Yeop Lee, Yun-Seon Yeo, et al. "Solid-State Dye-Sensitized Solar Cells Using Conducting Polymers as Hole Transporting Materials." In ASME 2006 International Solar Energy Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/isec2006-99067.

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Thiophene-based polymers have good prospects in the field of electronic and photoelectronic devices because of their solubility, processability, environmental stability, and excellent electrical conductivity. We synthesized new type of thiophene-based polymers to use as hole transporting materials on dye-sensitized solar cells (DSSC). The thiophene-based polymers were synthesized as random copolymers containing 3-{2-[2-(2-(4-methoxybiphenyl)ethoxy)ethoxy]ethoxy}methylthiophene (MEET) units and 3-hexylthiophene (3HT) units. The photovoltaic performance of the solid-state DSSC device was improve
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Юлия Александровна, Айзина,, та Ткачук, Дарья Олеговна. "THE METHOD OPTIMIZATION OBTAINING 4,5,9,10-TETRAHYDROTIENO[3/,4,5,6]CYCLOOCT[1,2-С]-THIOPHENE". У Перспективные научные исследования молодых ученых: сборник статей всероссийской научной конференции (Северодвинск, Ноябрь 2022). Crossref, 2022. http://dx.doi.org/10.37539/221123.2022.89.55.004.

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Проведена оптимизация метода получения труднодоступного 3,4-дизамещенного производного тиофена - 4,5,9,10-тетрагидротиено[3/,4,5,6]циклоокта[1,2-с]-тиофена. The method for obtaining a hard-to-reach 3,4-disubstituted thiophene derivative, 4,5,9,10-tetrahydrothieno[3/,4,5,6]cycloocta[1,2-c]-thiophene, has been optimized.
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Rodríguez Domínguez, J., G. Kirsch, D. Thomae, and P. Seck. "An Easy Synthesis of 5-Nitro-Thiophenes and 3-Amino-2-Nitro-Thiophenes." In The 11th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2007. http://dx.doi.org/10.3390/ecsoc-11-01303.

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Kim, Y. H., F. Li, and H. Zimmer. "Charged states of thiophene oligomers." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834786.

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Sreekumar, Anjana, Ajil Radhakrishnan Nair, Raksha Chandramani, et al. "Thiophene-centered small molecule emitters." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIAL SCIENCE AND CHEMISTRY (ICAMSC – 2023). AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0222858.

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Wang Dejun, Li Tiejin, H. Segawa, Wu Feipeng, and T. Shimidzu. "The rectifying characteristics of the electropolymerized ultro-thin films of thiophene and thiophene derivatives." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834851.

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Reports on the topic "Thiophens"

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Clark, D. P. Thiophene metabolism by E. coli. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5512649.

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Clark, D. P. Thiophene metabolism by E. coli. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6296900.

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Clark, D. P. Thiophene metabolism by E. coli. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/6026023.

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Rauchfuss, Thomas. Electron-Transfer Activation of Thiophene. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1609074.

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Clark, D. P. Thiophene metabolism by E. coli. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6855589.

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Rauchfuss, T. B. [Electron transfer activation of thiophene]. Progress report. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10181086.

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Wang, Yili. The mechanism of the oligomerization of thiophene-based para-quinodimethanes. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10161684.

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Allcock, Harry R., Jeffrey A. Dodge, Leon S. Van Dyke, and Charles R. Martin. Polyphosphazenes Bearing Polymerizable Pyrrole, Thiophene and Furan Side Groups: Synthesis and Chemical Oxidation. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada249747.

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Robertson, Mitchell Joe. Sulfur-bonded thiophenes in organometallic rhenium complexes and adsorption of isocyanides on gold. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10185025.

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Clark, D. P. Thiophene metabolism by E. coli. Final technical report, September 15, 1987--December 31, 1991. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10136777.

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