Results 21 to 30 of about 11,071 (289)

Some Natural Photosensitizers and Their Medicinal Properties for Use in Photodynamic Therapy

Molecules, 2022
Despite significant advances in early diagnosis and treatment, cancer is one of the leading causes of death. Photodynamic therapy (PDT) is a therapy for the treatment of many diseases, including cancer.
Tomasz Piotr Kubrak, Przemysław Kołodziej, Jan Sawicki, Anna Mazur, Katarzyna Koziorowska, David Aebisher   +5 more
doaj   +1 more source

Microwave-Assisted Synthesis of some Novel Azoles and Azolopyrimidines as Antimicrobial Agents

Molecules, 2017
In this study, new derivatives of pyrazole, isoxazole, pyrazolylthiazole, and azolopyrimidine having a thiophene ring were synthesized under microwave irradiation.
Sobhi M. Gomha, Thoraya A. Farghaly, Yahia Nasser Mabkhot, Mohie E. M. Zayed, Amany M. G. Mohamed   +4 more
doaj   +1 more source

Reversible Emission Tunability from 2D‐Layered Perovskites with Conjugated Organic Cations

Advanced Photonics Research, 2021
The structural flexibility of 2D‐layered halide perovskites provides unprecedented opportunities for tuning their optical properties. For example, lattice distortions facilitate white emission that stems from self‐trapped excitons or defects, and organic
Balaji Dhanabalan, Renuka D. Pothuraju, Sergio Marras, Lea Pasquale, Liberato Manna, Roman Krahne, Milena P. Arciniegas   +6 more
doaj   +1 more source

Trifluoroacetylation of electron-rich thiophenes [PDF]

, 2015
Electron-rich thiophenes were trifluoroacetylated by trifluoroacetic anhydride with different nitrogen bases in dichloromethane at room temperature in good yields.
Kristoffersen, Kenneth Aase, Benneche, Tore   +1 more
core   +1 more source

Dimerization reactions with oxidized brominated thiophenes

, 2023
International audienceCycloadditions are observed after oxidation of brominated thiophenes depending on the position and number of bromines on the ...
Youssef, Khaled, Cauchy, Thomas, Allain, Magali, Gohier, Frédéric   +3 more
core   +1 more source

Regiocontroled Pd-catalysed C5-arylation of 3-substituted thiophene derivatives using a bromo-substituent as blocking group

Beilstein Journal of Organic Chemistry, 2016
The use of a bromo-substituent as blocking group at the C2-position of 3-substituted thiophenes allows the regioselective introduction of aryl substituents at C5-position via Pd-catalysed direct arylation.
Mariem Brahim, Hamed Ben Ammar, Jean-François Soulé, Henri Doucet   +3 more
doaj   +1 more source

Efficient Syntheses of 2-Functionalized Thiophenes, Cyclopent[b]thiophenes, and Polysubstituted Benzo[b]thiophenes from 2-(Benzotriazol-1-ylmethyl)thiophenes

, 2016
Diverse 2-(functionalized-alkyl)- and 2-alkenylthiophenes 2a,b, 4a,b, and 6a−d are prepared via the side chain elaboration of 2-(benzotriazol-1-ylmethyl)thiophenes 3a,b, themselves readily available from the condensation of 1-(hydroxymethyl)benzotriazole
Linghong Xie (3037746), Ion Ghiviriga (206457), Alan R. Katritzky (455231), Larisa Serdyuk (3041169)   +3 more
core   +1 more source

Facile Synthesis of 3-Nitro-2-substituted Thiophenes

, 2016
A new approach to 3-nitro-2-substituted thiophenes has been developed. Exposure of commercially available 1,4-dithane-2,5-diol to nitroalkenes in the presence of 20% triethylamine results in a tandem Michael−intramolecular Henry reaction to form the ...
Anna M. Przybył (2305246), J. Mike Southern (2305252), Mark D. Roydhouse (1267722), Cornelius J. O’ Connor (2305249), Michael D. Wall (519921)   +4 more
core   +4 more sources

Removal of single and dual ring thiophene’s from dodecane using cavitation based processes

Ultrasonics Sonochemistry, 2022
Utilising cavitation for enhancing oxidative desulphurization has been investigated for nearly-two decades with recent investigations shifting focus from low-capacity acoustic cavitation (AC) to scalable hydrodynamic cavitation (HC). This work focuses on
Peter Delaney, Varaha P. Sarvothaman, Ronan Colgan, Sanjay Nagarajan, Gunjan Deshmukh, David Rooney, Peter K.J. Robertson, Vivek V. Ranade   +7 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source