Results 91 to 100 of about 119,037 (331)

Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds

open access: yesAngewandte Chemie, EarlyView.
An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong   +8 more
wiley   +2 more sources

Electronic structures and spectra of conducting anthracene derivatives [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
Theoretical studies on anthracene and a series of its derivatives were performed using the AM1 method and DFT. Based on B3LYP/6-31G(d) optimized geometries, the electronic, IR and NMR spectra of anthracene oligomers were calculated using the Indo/Cis ...
ZHONGFA WANG, SHI WU
doaj  

Light-related variation in sapling architecture of three shade-tolerant tree species of the Mexican rain forest [PDF]

open access: yes, 2008
The crown architecture of three shade-tolerant tree species (two subcanopy and one mid-canopy) was analyzed in relation to the light regime of the forest understorey.
Bongers, F.   +2 more
core   +2 more sources

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

open access: yesAdvanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova   +8 more
wiley   +1 more source

Single-molecule study for a graphene-based nano-position sensor [PDF]

open access: yes, 2014
In this study we lay the groundwork for a graphene-based fundamental ruler at the nanoscale. It relies on the efficient energy-transfer mechanism between single quantum emitters and low-doped graphene monolayers.
Cataliotti, F. S.   +10 more
core   +2 more sources

Topological Materials and Related Applications

open access: yesAdvanced Electronic Materials, EarlyView.
This review covers topological materials—including topological insulators, quantum valley Hall and quantum spin Hall insulators, and topological Weyl and Dirac semimetals—as well as their most recent advancements in fields such as spintronics, electronics, photonics, thermoelectrics, and catalysis.
Carlo Grazianetti   +9 more
wiley   +1 more source

Porous Phenazine‐bridged Tetraoxa[8]Circulenes for Selective Gold Recovery and Heterogeneous Catalysis

open access: yesAngewandte Chemie, EarlyView.
Gold recycling from electronic waste using porous materials is an emerging concept to reduce the environmental impact of gold mining. In this work, we report the synthesis of a highly porous phenazine‐derived tetraoxa[8]circulene polymer and its utilization in gold capture and heterogeneous catalysis.
Patrick W. Fritz   +4 more
wiley   +2 more sources

Impact of Donor-Acceptor Positions to Tune Efficient Dye-Sensitized Solar Cells: DFT/TD-DFT Study

open access: yesEast European Journal of Physics
The anthracene molecule was adopted as a π-conjugation bridge for the D–π–A system with a nitro group CH3 and a nitro group NO2 acting as donor and acceptor groups.
F. Bahrani   +3 more
doaj   +1 more source

Isolation of a Chiral Anthracene Cation Radical: X-Ray Crystallography and Computational Interrogation of its Racemization [PDF]

open access: yes, 2017
Chiral cation-radical salts hold significant promise as charge-transfer materials, chiroptical switches, and electron-transfer catalysts for enantioselective synthesis.
Bhatnagar, Anshul   +3 more
core   +1 more source

9-(4-Methoxyphenyl)anthracene [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
In the title compound, C21H16O, the dihedral angle between the anthracene ring system and the benzene ring is 74.3 (5)°. The anthracene ring system is essentially planar (r.m.s. deviation = 0.0257 Å) and the meth-oxy group lies in the plane of the benzene ring [C1-O1-C2-C7 torsion angle = 0.5 (2)°]. The crystal structure features π-π [centroid-centroid
V. Silambarasan   +4 more
openaire   +3 more sources

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