Results 51 to 60 of about 9,273,531 (285)

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Substituent-Modulated Assembly Formation: An Approach to Enhancing the Photostability of Photoelectric-Sensitive Chalcogenide-Based Ion-Pair Hybrids

, 2017
A series of electronically active viologen dications (RV) with tunable substituent groups were utilized to hybridize with [Ge4S10]4– (T2 cluster) to form the hybrids of T2@RV.
Zhixing Fu (2573122), Jiaxu Zhang (1942288), Yujia Zhu (3800539), Dongsheng Li (222712), Dandan Hu (2823056), Tao Wu (16763), Jian Lin (323268)   +6 more
core   +2 more sources

Effect of substituents on the 1H-NMR chemical shifts of 3-methylene-2-substituted-1,4-pentadienes [PDF]

Journal of the Serbian Chemical Society, 2003
The principle of linear free energy relationships was applied to the 1H chemical shifts of the b-vinyl proton atoms of 3-methylene-2-substituted-1,4-pentadienes.
GORDANA S. USCUMLIC, NATASA V. VALENTIC
doaj  

Substituent Effect on the Photoreduction Kinetics of Benzophenone [PDF]

The Journal of Physical Chemistry A, 2013
The kinetics of the photoreduction of four benzophenone derivatives by isopropyl alcohol was examined in acetonitrile, namely, tetra-meta-trifluoromethyl-, di-para-trifluoromethyl-, di-para-methoxy benzophenone, and, for comparison, the unsubstituted molecule itself.
Demeter, Attila, Horváth, Klaudia, Böőr, Katalin, Molnár, Laura, Soós, Tibor, Lendvay, György   +5 more
openaire   +2 more sources

High‐Efficiency Quantum Defect Generation in Carbon Nanotubes via Oxygen‐Free Photochemistry

Advanced Functional Materials, EarlyView.
We show that oxygen plays an important role in quantum defect formation in carbon nanotubes and identify reaction conditions to create a range of different quantum defects for photonics and biosensing. ABSTRACT Single‐walled carbon nanotubes (SWCNTs) offer potential for a wide range of applications from optoelectronic devices to biomedical diagnostics.
Christina Derichsweiler, Valeriia D. Andreeva, Jan Stegemann, Julia Ackermann, Janus A. C. Wartmann, Svenja Herbertz, Sebastian Kruss   +6 more
wiley   +1 more source

Substituent-Driven Selective N/OAlkylation of 4(Trihalomethyl)pyrimidin-2(1H)ones Using Brominated Enones

, 2022
The selective N- or O-alkylation of 4-(tri­halo­methyl)­pyrimidin-2­(1H)-ones, using 5-bromo enones/enaminones as alkylating agents, is reported. It was found that the selectivity toward the N- or O-regioisomer is driven by the substituent present at the
Ludger A. Wessjohann, Genilson S. Pereira (12238850), Marcos A. P. Martins, Nilo Zanatta, Helio G. Bonacorso (1457209), Mateus Mittersteiner (6899375), Mateus Mittersteiner, Yuri Silva, Helio G. Bonacorso, Marcos A. P. Martins (9155491), Nilo Zanatta (1457224), Yuri Silva (12238853), Ludger A. Wessjohann (578796), Genilson S. Pereira   +13 more
core   +1 more source

Chemical Strategies for Multistimuli Responsive Dynamic Covalent Materials in Regenerative Medicine

Advanced Healthcare Materials, EarlyView.
Multistimuli responsive dynamic covalent materials integrate reversible chemistry with the complex chemical, mechanical, and biochemical cues of regenerative environments. This review highlights chemical strategies based on orthogonal dynamic bonds, multicomponent networks, and hierarchical architectures to regulate mechanics, degradation, and ...
Saurabh Joshi, Matthew B. Baker, Dominik Schauenburg   +2 more
wiley   +1 more source

Long-range Effect of Bromine in the Deprotonative Metalation of Aromatic Compounds

CHIMIA, 2016
Deprotonative metalation has been largely used to functionalize aromatic compounds. The efficiency of such reactions, as well as their regioselectivity, depends on the substituents connected to the rings.
Florence Mongin
doaj   +1 more source

Advances in 3D Bioprinting for Breast Cancer Modeling: Tumor Microenvironment, Metastasis, and Drug Screening

Advanced Healthcare Materials, EarlyView.
Three‐dimensional bioprinting transforms breast cancer modeling from simple constructs into spatially organized, multicellular, perfused, and patient‐derived platforms. This review shows how bioinks, cellular composition, architecture, and flow govern tumor behavior and drug response, while revealing why complexity alone is insufficient without ...
Mustafa Nakipoglu, Mahboobeh Mahmoodi, Ehsanul Hoque Apu, Fahimeh Shahabipour, Sibel Emir Diltemiz, Sanjib Saha, Halima Alem, Nureddin Ashammakhi   +7 more
wiley   +1 more source

Experimental Quantum Chemistry: A Hammett-inspired Fingerprinting of Substituent Effects [PDF]

, 2021
The quantum mechanically calculable Q descriptor is shown to be a potent quantifier of chemical reactivity in complex molecules – it shows a strong correlation to experimentally derived field effects in non-aromatic substrates and Hammett σm and σp ...
S\uf6derberg, Fredrik, Wang, Fang,, Olsson, Martina, Olsson, Martina,, Rahm, Martin,, Söderberg, Fredrik,, Wang, Fang, Fredrik Söderberg, Fang Wang, Söderberg, Fredrik, Sessa, Francesco,, Martin Rahm, Sessa, Francesco, Rahm, Martin, Francesco Sessa, Martina Olsson   +15 more
core   +1 more source