Results 91 to 100 of about 22,231 (296)

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

Advanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally, Paul L. Burn, Paul E. Shaw   +2 more
wiley   +1 more source

Late-Stage Fluorination of Bioactive Molecules and Biologically-Relevant Substrates

, 2018
Late Stage Fluorination of Bioactive Molecules and Biologically-Relevant Substrates reviews how the use of these techniques on compounds with already known and relevant biological activity can provide new pharmaceutical leads with improved medicinal ...
Postigo, Jose Alberto
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Controlled Hydrophilic–Hydrophobic Transition of PET Films via Fluorination and Drying

Physchem
Polyethylene terephthalate (PET) films were modified by direct fluorination using fluorine gas at room temperature and 660 torr for reaction times ranging from 10 min to 5 h. Some of the fluorinated samples were dried at 70 °C for 7 days.
Zhipeng He, Jae-Ho Kim, Susumu Yonezawa
doaj   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Benzylic C(sp3)–H fluorination

Beilstein Journal of Organic Chemistry
The selective fluorination of C(sp3)–H bonds is an attractive target, particularly for pharmaceutical and agrochemical applications. Consequently, over recent years much attention has been focused on C(sp3)–H fluorination, and several methods that are ...
Alexander P. Atkins, Alice C. Dean, Alastair J. J. Lennox   +2 more
doaj   +1 more source

Aminofluorination of 2-alkynylanilines: a Au-catalyzed entry to fluorinated indoles

Beilstein Journal of Organic Chemistry, 2014
The scope and limitations of gold-catalyzed tandem cycloisomerization/fluorination reactions of unprotected 2-alkynylanilines to have access to 3,3-difluoro-2-aryl-3H-indoles and 3-fluoro-2-arylindoles are described.
Antonio Arcadi, Emanuela Pietropaolo, Antonello Alvino, Véronique Michelet   +3 more
doaj   +1 more source

The Mechanism of Fluorine Doping for the Enhanced Lithium Storage Behavior in Cation-Disordered Cathode Oxide [PDF]

Structural Dynamics
Li-rich cation-disordered rock-salt (DRX) materials have emerged as promising candidates for high-capacity oxide cathodes. Their fluorinated variants have shown improved cycling stability with effectively suppressed oxygen loss.
Yuanpeng Zhang
doaj   +1 more source

Fluorination-Induced Conversion of the Quasi- to the Normal Interchain Packing in Push–Pull Conjugated Polymer Aggregates

We investigated the chain-length and fluorination effects on photophysics within push–pull conjugated polymer (CP, Mw 40k/100k PBDB-T and Mw 100k PM6) aggregates using transient absorption spectroscopy.
Jun Sang Cho (12563138), Joon I. Jang (1637167), JaeHong Park (5614484), Kilwon Cho (1276983), Mun Seok Jeong (1494691), Jaebum Noh (11038176), Hak-Won Nho (12047370), Jungho Mun (4522024), Jieun Bang (16980031), Bora Kim (165453), Boseok Kang (1463410), Hyuk Gu Yun (16980028), Tae Woong Yoon (6445070), Minyoung Jeong (16980034), Dongki Lee (4522015), Hyeongjin Hwang (1512715), Hansol Lee (1545124), Se Gyo Han (9327551), Dong Hyeon Kim (3356519), Oh-Hoon Kwon (1847566), Junsuk Rho (4436116)   +20 more
core   +1 more source

Site selectivities in fluorination [PDF]

, 2018
In the synthesis of bio-active compounds, fluorinated compounds play a prominent role. However, the site-selective fluorination of organic molecules is often challenging, because activation of a reaction site using a fluorinating reagent can be difficult
Nishikata, T, Syo Ishida, Tom Sheppard, Ishida, S, Takashi Nishikata, Sheppard, T   +5 more
core   +1 more source