Results 141 to 150 of about 123,857 (304)

Functionalization and solubilization of polycyclic aromatic compounds by sulfoniumization

Chemical Science
A regioselective sulfoniumization of polycyclic aromatic hydrocarbons is described. The obtained sulfonium-salts, soluble in organic and water media, are employed in post-functionalizations, π-extension, and mitochondria-selective bio-imaging.
Johannes E. Erchinger, Tsubasa Okumura, Kanami Nakata, Daisuke Shimizu, Constanstin G. Daniliuc, Kazuma Amaike, Frank Glorius, Kenichiro Itami, Hideto Ito   +8 more
openaire   +2 more sources

When Light Challenges Heat: Mechanistic Insights Into a Reaction Competing With Cadogan Cyclisation in Nitro‐Perylenediimides

Chemistry – A European Journal, EarlyView.
Visible‐light irradiation of nitro‐perylenediimide in the presence of triphenylphosphine reveals an unexpected pathway competing with the classical Cadogan cyclization. Mechanistic investigations uncover the rapid and selective formation of bay‐functionalized 1‐iminophosphorane‐12‐hydroxy perylenediimide derivatives.
Manuel Pedrón Laserna, Ilaria Ciofini, Piétrick Hudhomme   +2 more
wiley   +1 more source

\u3csup\u3e13\u3c/sup\u3eC NMR Analysis of Biologically Produced Pyrene Residues by \u3cem\u3eMycobacterium\u3c/em\u3e sp. KMS in the Presence of Humic Acid [PDF]

, 2007
Cultures of the pyrene degrading Mycobacterium sp. KMS were incubated with [4-13C]pyrene or [4,5,9,10-14C]pyrene with and without a soil humic acid standard to characterize the chemical nature of the produced residues and evaluate the potential for ...
Holz, Richard C., Nieman, J. Karl C., Sims, Ronald C.   +2 more
core   +1 more source

In‐situ asphaltene capture with iron oxide nanoparticles in steam‐assisted gravity drainage (SAGD) for improved recovery and partial upgrading of bitumen

The Canadian Journal of Chemical Engineering, EarlyView.
Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada, Saleh S. Baakeem, Mabkhot BinDahbag, M. Daniela Contreras‐Mateus, Jesus Botett, Afif Hethnawi, Nashaat N. Nassar   +6 more
wiley   +1 more source

Potential of Trichoderma spp. strains for the bioremediation of soils contaminated with petroleum

Biotecnología Vegetal, 2016
Fungi species can degrade xenobiotic compounds contaminating the soil, including hydrocarbons. The objective of this work was to determine the potential of three strains of Trichoderma, isolated from soil contaminated with petroleum, for bioremediation ...
Marcia Pesántez, Rosa Castro
doaj  

Synthesis and Properties of Dibenzo-Fused Naphtho[2,3-b:6,7-b′]disilole and Naphtho[2,3-b:6,7-b′]diphosphole

Molecules
Silole- and phosphole-containing polycyclic aromatic compounds have attracted significant attention in the field of organic functional materials. The structure of the aromatic units has great impact on the photophysical properties of the resulting silole-
Suzuho Morishita, Chikara Hayasaka, Keiichi Noguchi, Koji Nakano   +3 more
doaj   +1 more source

The Electronic Spin State of Diradicals Obtained from the Nuclear Perspective: The Strange Case of Chichibabin Radicals

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The electronic spin state of two Chichibabin radicals is investigated using 2‐dimensional hyperfine correlated Electron Nuclear Double Resonance. The protons (I=1/2) act as a reference for the electronic spin quantum number (S) via their hyperfine interactions.
Gabriel Moise, Saleta Fernández, Kit Joll, Mikhail V. Vaganov, Fátima García, Christiane R. Timmel, Diego Peña, Arzhang Ardavan   +7 more
wiley   +1 more source

2019 State-of-the-Science of Dispersants and Dispersed Oil (DDO) in U.S. Arctic Waters: Public Health and Food Safety [PDF]

, 2019
Chemical dispersants were employed on an unprecedented scale during the Deepwater Horizon oil spill in the Gulf of Mexico, and could be a response option should a large spill occur in Arctic waters. The use of dispersants in response to that spill raised
Coastal Response Research Center
core   +2 more sources

ON THE CRACKING OF POLYCYCLIC COMPOUNDS [PDF]

Bulletin of the Chemical Society of Japan, 1934
openaire   +1 more source

Benzene and polycyclic aromatic compounds [PDF]

, 2014
The final work consists of three parts. The first part includes historical course of discovery and determination of the chemical structure of benzene. At the beginning of the specified basic use of benzene in the industry in order to emphasize the importance of studying the structure and chemical reactions of benzene and its derivatives.
openaire