Results 31 to 40 of about 25,864 (264)

Direct Synthesis of N‐Heterocyclic Carbene‐Stabilized Copper Nanoparticles from an N‐Heterocyclic Carbene–Borane [PDF]

Chemistry – A European Journal, 2019
AbstractN‐Heterocyclic carbene (NHC)‐stabilized copper nanoparticles (NPs) were synthesized from an NHC–borane adduct and mesitylcopper(I) under thermal conditions (refluxing toluene for 2.5 h). NPs with a size distribution of 11.6±1.8 nm were obtained. The interaction between Cu NPs and NHC ligands was probed by X‐ray photoelectron spectroscopy, which
Frogneux, Xavier, Hippolyte, Laura, Mercier, Dimitri, Portehault, David, Chanéac, Corinne, Sanchez, Clément, Marcus, Philippe, Ribot, François, Fensterbank, Louis, Carenco, Sophie   +9 more
openaire   +3 more sources

Stable Synapse-Like Memory Switching in N-Heterocyclic Carbene Monolayers. [PDF]

Angew Chem Int Ed Engl
We report a redox‐active N‐heterocyclic carbene (NHC) monolayer showing synapse‐like behavior via proton‐coupled electron transfer (PCET). These quinone‐functionalized NHCs form dense self‐assembled monolayers and highly stable molecular junctions. Bias‐driven PCET switches quinone/hydroquinone states, producing reversible hysteresis and spike‐timing ...
Das A, Borrini A, Gutheil C, Braunschweig B, Shakhayeva B, Katsoukis G, Nieuwenhuis AF, Ahmed R, Leitherer S, Solomon GC, Glorius F, Nijhuis CA.   +11 more
europepmc   +3 more sources

Photodynamics of Fe complexes: Variation with number of NHC functions [PDF]

EPJ Web of Conferences, 2019
Ultrafast spectroscopy on a series of Fe(II) complexes finds an increase of the 3MLCT lifetime with increasing number of N-heterocyclic carbene (NHC) donor functions revealing a promising route for the design of Fe photosensitizers.
Friedrich Aleksej, Zimmer Peter, Bauer Matthias, Lochbrunner Stefan   +3 more
doaj   +1 more source

N-Heterocyclic Carbene Coinage Metal Complexes Containing Naphthalimide Chromophore: Design, Structure, and Photophysical Properties

Inorganics, 2017
A series of novel N-heterocyclic carbene coinage metal complexes containing a naphthalimide (NI) chromophore has been prepared and fully characterized. Two types of molecules are described those where the NI unit is directly attached to the carbene unit ...
Pierre-Henri Lanoë, Btissam Najjari, Florine Hallez, Geoffrey Gontard, Hani Amouri   +4 more
doaj   +1 more source

Atomically precise ultrasmall copper cluster for room-temperature highly regioselective dehydrogenative coupling

Nature Communications, 2023
Three-component dehydrogenative coupling reactions represent important and practical methodologies for forging new C–N bonds and C–C bonds. Achieving highly all-in-one dehydrogenative coupling functionalization by a single catalytic system remains a ...
Teng Jia, Yi-Xin Li, Xiao-Hong Ma, Miao-Miao Zhang, Xi-Yan Dong, Jie Ai, Shuang-Quan Zang   +6 more
doaj   +1 more source

Synthesis, characterization and luminescence studies of gold(I)-NHC amide complexes

, 2013
A flexible, efficient and straightforward methodology for the synthesis of N-heterocyclic carbene gold(I)-amide complexes is reported. Reaction of the versatile building block [Au(OH)(IPr)] (1) (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene ...
Nelson, David J, Slawin, Alexandra MZ, Cordes, David B, Nelson, David J., David B. Cordes, Alexandra M. Z. Slawin, Graham, Duncan, David J. Nelson, Gómez-Suárez, Adrián, Slawin, Alexandra M Z, Duncan Graham, Cordes, David B., Adrián Gómez-Suárez, David G. Thompson, Thompson, David G, Thompson, David G., Nolan, Steven P, Nolan, Steven, Nolan, Steven P., Steven P. Nolan   +19 more
core   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

Angewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera, Francesco Basoccu, Andrea Porcheddu   +2 more
wiley   +2 more sources

N-heterocyclic carbene-catalyzed arene formation reactions

, 2022
N-heterocyclic carbene-catalyzed reactions for the formation of aromatic compounds are reviewed. The reactions are subdivided into 4 types based on their activation modes. A brief summary on the achievements and the challenges remaining in N-heterocyclic
Chi, Robin Yonggui, Li, Tingting, Jin, Zhichao   +2 more
core   +1 more source

Ultra‐Thin and Highly Insulating Aromatic Monolayers by N‐Heterocyclic Carbenes

Angewandte Chemie, EarlyView.
By using N‐heterocyclic carbenes extremally insulating and at the same time as thin as 0.3 nm molecular films are formed. The charge transport calculations indicate absence of destructive quantum interference effect which was so far the only way to suppress conductivity in aromatic molecules.
Mateusz Wróbel, Raka Ahmed, William Bro‐Jørgensen, Krzysztof Kozieł, Christian A. Nijhuis, Gemma C. Solomon, Piotr Cyganik   +6 more
wiley   +2 more sources

N-Heterocyclic carbene-based C-centered Au(I)-Ag(I) clusters with intense phosphorescence and organelle-selective translocation in cells

Nature Communications, 2022
Photoluminescent gold clusters have unique chemical and physical properties based on their perturbed electronic structures. Here, the authors report the synthesis of carbon-centered Au(I)-Ag(I) clusters with high phosphorescence quantum yields using N ...
Zhen Lei, Mizuki Endo, Hitoshi Ube, Takafumi Shiraogawa, Pei Zhao, Koichi Nagata, Xiao-Li Pei, Tomoya Eguchi, Toshiaki Kamachi, Masahiro Ehara, Takeaki Ozawa, Mitsuhiko Shionoya   +11 more
doaj   +1 more source