Results 101 to 110 of about 36,445 (329)

Componentes voláteis do café torrado. Parte I: compostos heterocíclicos Volatile components in roasted coffee. Part I: heterocyclic compounds

Química Nova, 1999
A review of heterocyclic compounds in roasted coffee is presented. The contents, precursors and sensorial properties of furans, pyrroles, oxazoles, thiazoles, thiophenes, pyrazines and pyridines are discussed.
Carlos Alberto Bastos De Maria, Ricardo Felipe Alves Moreira, Luiz Carlos Trugo   +2 more
doaj   +1 more source

Modulating Polaron Behavior in PM6 Blends with Nonfullerene and Fullerene Acceptors: The Importance of Singlet Energy Transfer

Advanced Materials Interfaces, EarlyView.
Transient absorption spectroscopy is employed to demonstrate that nonfullerene acceptors inhibit the formation of bound polaron pairs in conjugated polymers, which would otherwise undergo rapid relaxation back to the ground state. Instead, efficient energy transfer from the polymer to the non‐fullerene acceptor takes place, facilitating high charge ...
Rebecca Harris, Chia‐Yu Chang, Junjun Guo, Hristo Ivov Gonev, Tracey M. Clarke   +4 more
wiley   +1 more source

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  

Identification of Larvicidal Constituents of the  Essential Oil of Echinops grijsii Roots against the  Three Species of Mosquitoes

Molecules, 2017
The screening of Chinese medicinal herbs for insecticidal principles showed that the essential oil of Echinops grijsii Hance roots possessed significant larvicidal activity against mosquitoes.
Mei Ping Zhao, Qi Zhi Liu, Qiyong Liu, Zhi Long Liu   +3 more
doaj   +1 more source

Sulfur analysis of Bolu-Mengen lignite before and after microbiological treatment using reductive pyrolysis and gas chromatography/mass spectrometry [PDF]

, 2005
Atmospheric pressure-temperature programmed reduction coupled with on-line mass spectrometry (AP-TPR/MS) is used for the first time on microbiologically treated coal samples as a technique to monitor the degree of desulfurization of the various sulfur ...
Bozdemir T., Brown S. D., Durusoy T., Durusoy T., Gryglewicz G., J. Yperman, Jagtoyen M., Juszczak A., Karavaiko G. I., Klein J., Maes I. I., Maes I. I., Maes I. I., Mullens S., Olson G., Olsson G., R. Carleer, Rutkowski P., S. Mullens, Selsbo S., Stefanova M., T. Bozdemir, T. Durusoy, Van Aelst J., Van Aelst J., Y. Yürüm, Yperman J., Álvarez R.   +27 more
core   +1 more source

New Perspectives on Semiconducting Conjugated Oligomers for Neuromodulation in Hydra vulgaris

Advanced Materials Interfaces, EarlyView.
Semiconducting organic compounds, thiophene‐based, modify the rhythmic electrical activity of the cnidarian Hydra vulgaris acting on specific neuronal circuits. The ETE‐S trimer also forms electronically conducting wires in the living tissues of the animal.
Giuseppina Tommasini, Mariarosaria De Simone, Martina Blasio, Claudia Zenna, Angela Tino, Eleni Stavrinidou, Silvia Santillo, Claudia Tortiglione   +7 more
wiley   +1 more source

Charge generation in organic solar cells: Journey toward 20% power conversion efficiency

Aggregate, Volume 3, Issue 6, December 2022., 2022
Herein, a photophysicist's views on charge generation in organic solar cells is discussed. Recent steady‐state and time‐resolved spectroscopic studies regarding the exciton diffusion to donor:acceptor interfaces, charge transfer at the donor:acceptor interface, and long‐range spatial dissociation of charge transfer states are highlighted.
Yasunari Tamai
wiley   +1 more source

Identifying the missing link in catalyst transfer polymerization

Nature Communications, 2018
The mechanism for nickel-catalyzed catalyst transfer polycondensation of thiophenes to polythiophenes. Here the authors show experimental and computational evidence of structurally characterized square planar η 2-Ni(0)–thiophene species and their ...
Weiying He, Brian O. Patrick, Pierre Kennepohl   +2 more
doaj   +1 more source

Giant Spin Pumping at Polymer/Ferromagnet Interfaces for Hybrid Spintronic Devices

Advanced Materials Interfaces, EarlyView.
The integration of spintronic materials into flexible electronics takes a leap forward with efficient spin pumping across metal‐polymer interfaces. Despite large resistivity mismatch, a silicon‐based polymer (HSQ) demonstrates high spin mixing conductance (≈20 nm−2), possibly driven by spin‐orbital coupling, unveiling new opportunities for polymer ...
Shiva Gaur, Akash Kumar, Himanshu Bangar, Utkarsh Shashank, Hukum Singh, Saroj Prasad Dash, Anubhav Raghav, Johan Åkerman   +7 more
wiley   +1 more source

Recent progress in low‐cost noncovalently fused‐ring electron acceptors for organic solar cells

Aggregate, Volume 3, Issue 6, December 2022., 2022
Noncovalently fused‐ring electron acceptors (NFREAs) have attracted much attention because of the advantage of simple structure, facile synthesis, and low cost, which have great potential for commercial applications in organic solar cells. This review presents the recent development of NFREAs for organic solar cells and focuses on the effect of their ...
Qingqing Bai, Qiming Liang, Henan Li, Huiliang Sun, Xugang Guo, Li Niu   +5 more
wiley   +1 more source