نتایج جستجو برای: thiophene

تعداد نتایج: 3061  

2010
Rocío Ponce Ortiz He Yan Antonio Facchetti Tobin J. Marks

In the organic electronics research field, several strategies have been used to modulate the transport properties of thiophene-derived semiconductors via sequential functionalization of their π-conjugated cores. This review summarizes the major design and synthetic strategies for tuning thiophene-containing small molecule and polymer properties by introducing electron-deficient nitrogen-contain...

Journal: :Bioorganic & medicinal chemistry letters 2016
Kanchipura Ramachandrappa Raghavendra Nagamallu Renuka Vivek H Kameshwar Bharath Srinivasan Kariyappa Ajay Kumar Sheena Shashikanth

Ethyl 2-(4-methoxyphenyl)-3-(thiophene-2-carbonyl)cyclopropanecarboxylates 2(a-f) and ethyl 4-aryl-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-5-carboxylates 4(a-f) were synthesized by simple procedure. The synthesized new compounds were screened in vitro for their antimicrobial and antioxidant activities. The compounds 2b and 4f showed excellent antibacterial activity; while 2b and 4f showed rem...

Journal: :Molecules 2016
Jarosław Lewkowski Zbigniew Malinowski Agnieszka Matusiak Marta Morawska Diana Rogacz Piotr Rychter

The aim of this work was to synthesize selected thiophene-derived aminophosphonic systems and evaluate the phytotoxicity of newly obtained products according to the OECD 208 Guideline. Seven new thiophene-derived N-substituted dimethyl aminomethylphosphonic acid esters 2a-h were synthesized by the addition of an appropriate phosphite to azomethine bond of starting Schiff bases 1a-h, and NMR spe...

Journal: :Nanotechnology 2016
O Synooka K-R Eberhardt J Balko T Thurn-Albrecht G Gobsch W Mitchell S Berny M Carrasco-Orozco H Hoppe

We report high photovoltaic performance of a novel donor-acceptor (D-A) conjugated polymer poly[2,6[4,8-bis(2-ethyl-hexyl)benzo[1,2-b;4,5-b']dithiophene-co-2,5-thiophene-co-4,7[5,6-bis-octyloxy-benzo[1,2,5]thiadiazole]-co-2,5-thiophene] (PBDTTBTZT) in bulk heterojunctions with [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM). A power conversion efficiency (PCE) of more than 7% is obtained fo...

Journal: :Materials advances 2023

AZABODIPY with thiophene and phenyl substituents allows electroluminescence in pure NIR to be achieved.

Journal: :Chemical communications 2004
Sergey A Piletsky Elena V Piletska Kal Karim Frank Davis Seamus P J Higson Anthony P F Turner

A novel method of photochemical polymerization of thiophene derivatives in aqueous solution catalyzed by potassium dichromate and initiated by illumination is described.

Journal: :Physical chemistry chemical physics : PCCP 2017
Mercedes V Bohnwagner Irene Burghardt Andreas Dreuw

The photochemical properties of thiophene analogs of N-pyrrolobenzonitrile (PBN), notably the two isomers 5-(1H-pyrrole-1-yl)thiophene-2-carbonitrile (2-TCN) and 5-(1H-pyrrole-1-yl)thiophene-3-carbonitrile (3-TCN) have been investigated. The aim of this study is to reveal whether the donor-acceptor compound TCN shows a fluorescence behavior similar to other benzonitrile derivatives like PBN and...

Journal: :Chemical communications 2009
Musabbir A Saeed Frank R Fronczek Md Alamgir Hossain

An encapsulated chloride in a thiophene-based cryptand is bridged by two in-in protons of tertiary amines with an N...Cl(-) distance of 3.048(3) A, similar to that observed in Park and Simmons' katapinand chloride complex.

Journal: :Journal of the American Chemical Society 2002
S Holger Eichhorn Alexander J Paraskos Keiki Kishikawa Timothy M Swager

A range of mesogenic molecules varying in both bend angle and strength of lateral dipole were synthesized, and their phase behavior was characterized by polarizing microscopy, thermal analysis, X-ray diffraction, and electrooptical measurements. We find the general destabilization of the liquid crystallinity caused by strong lateral dipolar groups and the bent molecular shape are off-set in mes...

2013
Moaz M. Abdou

The thiophene-based azo dyes class of azo dyes have generated considerable interest since its discovery 62 years ago. These dyes have come to be applied to a very large number and variety of fibres and have therefore achieved an importance which is probably greater than the weights used would suggest. The connection between dyeing and fastness properties on the one hand and chemical constitutio...

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