Results 91 to 100 of about 12,222 (276)

Theretofore Highest Efficiency in Vacuum‐Deposited Organic Solar Cells Originating From Triarylamine‐Based Small‐Molecule Donors Containing Fused Heterocycle Units

Advanced Science, EarlyView.
Fused‐ring engineering unlocks record efficiency in vacuum‐deposited organic solar cells. By replacing linear π‐bridges with fused‐ring analogues in triarylamine‐based donors, we achieve enhanced molecular planarity, red‐shift optical absorption, minimize energy loss and optimized phase separation.
Yun‐Fei Li, Le‐Shan Dai, Zuo‐Chang Chen, Shi‐Long Xiong, Bin‐Wen Chen, Ke‐Yue Yang, Qiu Xiong, Yi‐Dong Yan, Kun Cao, Da‐Qin Yun, Feng He, Lin‐Long Deng, Su‐Yuan Xie, Lan‐Sun Zheng   +13 more
wiley   +1 more source

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

Activation of Thiophenes by Superacids:  Protonation and Polymerization

, 2016
Activation of Thiophenes by Superacids:  Protonation and ...
Qian Feng (302178), Shifang Luo (2955651), Thomas B. Rauchfuss (1308867), Marilyn Olmstead (2702515), Philip R. Stafford (2955648)   +4 more
core   +1 more source

Coordination‐Tuned Iridium Single‐Atom Nanozymes Boost Multienzyme Activity for Colorimetric Sensing

Advanced Science, EarlyView.
Breaking the coordination symmetry of Ir single‐atom sites through asymmetric Ir–N3S1 engineering tailors interfacial electron transfer, oxygen activation, and multienzyme‐like catalytic pathways. Operando spectroscopy and theoretical modeling uncover the atomic‐level origin of activity enhancement, providing a strategy for designing multifunctional ...
Tao Li, Xinyu Zhang, Jiashan Xia, Mengyu Wu, Cong Liu, Yapei Sun, Wanjiang Zhao, Min Qian, Wei Wang, Weixia Duan, Shangcheng Xu   +10 more
wiley   +1 more source

Substituent Effects in Thiophenes [PDF]

, 1995
He I and He II photoelectron spectra (UPS) of 2-acetyl and 2-cyano thiophene have been measured. The electronic strucutre of the title compounds and, in particular, the effect of substituents on the thiophene % orbitals is discussed on the basis of band ...
Novak, Igor
core   +1 more source

Control over Structure Formation of Small Molecular Weight Thiophenes in Vacuum Deposited Films

Advanced Materials Interfaces
Recent structural studies of small‐molecular‐weight thiophenes are surveyed, with particular focus on naphthyl‐end‐capped derivatives and comparison to alkyl‐capped and unsubstituted analogues.
Matti Knaapila, Mathias K. Huss‐Hansen, Jakob Kjelstrup‐Hansen   +2 more
doaj   +1 more source

Hydrogen‐Bonding‐Directed Assembly of COF/Nanocluster Hybrids With Synergistic Roles for Efficient Solar Hydrogen Production

Advanced Science, EarlyView.
Hydrogen‐bonding‐directed assembly enables molecular‐level integration of a covalent organic framework and NiZnCo nanoclusters. The engineered interface couples directional charge transfer, multimetal synergy, and photothermal‐assisted catalysis, providing a versatile strategy for efficient noble‐metal‐free solar hydrogen production.
Ailing Pan, De Yan, Anwu Xu, Hong Du, Abulikemu Abudu Rexit, Gang Zhang   +5 more
wiley   +1 more source

Condensed Thiophenes and Selenophenes:  Thionyl Chloride and Selenium Oxychloride as Sulfur and Selenium Transfer Reagents

, 2016
3,4-Cyanomethyl substituted thiophenes reacted with thionyl chloride in the presence of base to give dicyano substituted thieno(3,4-c)thiophenes. The use of selenium oxychloride furnished the corresponding cyano substituted seleno(3,4-c)thiophene.
Robert M. Metzger (2485921), Michael. P. Cava (3029460), Ramiya R. Amaresh (3029175), M. V. Lakshmikantham (2709079), Jeffrey W. Baldwin (2161429), Robin D. Rogers (1318971)   +5 more
core   +1 more source

Overcoming Transmission Barriers: A Dual‐Functional Adhesive Hydrogel for Direct Monkeypox Virus Neutralization and Wound Healing

Advanced Science, EarlyView.
MPXV infection leads to persistent viral replication and severe local inflammation, while existing treatments cannot simultaneously remove viruses and repair injured tissue. This study constructs Polymer@mPDA@Gel hydrogel via a two‐step hierarchical assembly method: mPDA anchors photothermal polymers to form antiviral photothermal subunits, which are ...
Ming Zhang, Jiaxin Tian, Xiaolong Zhu, Xiao Li, Xiangshu Qiu, Yuanyuan Li, Ben Zhong Tang, Ning Shi   +7 more
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