Results 51 to 60 of about 35,154 (267)

Effect of Facial Encumbrance on Excimer Formation and Charge Resonance Stabilization in Model Bichromophoric Assemblies [PDF]

open access: yes, 2017
Excimer formation and charge resonance stabilization in covalently linked bichromophoric systems with flexible spacers are important processes relevant to biochemistry and functional materials.
Uhler, Brandon   +5 more
core   +1 more source

Determination of polycyclic aromatic hydrocarbons in tea infusions samples by high performance liquid chromatography with fluorimetric detection [PDF]

open access: yes, 2017
This study focuses on the contamination of 15 polycyclic aromatic hydrocarbons (PAHs) , recommended by the US Environmental Protection Agency, in 10 tea brands distributed in Italy.
Apriceno, Azzurra   +3 more
core   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

open access: yesAdvanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

In Silico Approach for Fluorene Biodegradation, and the Impacts of Derivatives on the Environment and Health

open access: yesJournal of Xenobiotics
Fluorene poses ecological and health hazards that originate from biomass combustion and petroleum. However, some microorganisms can counter fluorene through complex enzymatic degradation pathways.
Syed Raju Ali   +2 more
doaj   +1 more source

π-π stacking vs. C–H/π interaction: Excimer formation and charge resonance stabilization in van der Waals clusters of 9,9′-dimethylfluorene [PDF]

open access: yes, 2018
Studies of exciton and hole stabilization in multichromophoric systems underpin our understanding of electron transfer and transport in materials and biomolecules.
Cai, Sheng   +7 more
core   +1 more source

Temperature dependent photoluminescence of organic semiconductors with varying backbone conformation [PDF]

open access: yes, 2002
We present photoluminescence studies as a function of temperature from a series of conjugated polymers and a conjugated molecule with distinctly different backbone conformations.
Chandrasekhar, H. R.   +8 more
core   +2 more sources

2,7-Dichloro-4-(chloroacetyl)fluorene [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
There are two mol-ecules in the asymmetric unit of the title compound, C(15)H(9)Cl(3)O. The fluorene rings of the two mol-ecules are both coplanar within 066 (3) Å. In the crystal, C-H⋯O and C-H⋯Cl hydrogen bonds link the mol-ecules into sheets running parallel to (100).
Jian-Bo Chu, Guo-Wu Rao, Jin-Hao Zhao
openaire   +3 more sources

Structural Modulation of Charge Transfer in Donor–Acceptor Systems: Effects of Donor Type and Connectivity

open access: yesAdvanced Optical Materials, EarlyView.
A coherent phthalimide acceptor platform with planar (Cz—carbazole) and spiro‐type (SAF—spiroacridine fluorene) donors enables systematic tuning of donor geometry and coupling, driving the evolution of excited‐state topology from classical CT‐TADF and fluorescence/RTP to CT‐driven and LE‐assisted TADF with OLED efficiencies ≈ 36%.
Christopher Anton Wallerius   +8 more
wiley   +1 more source

Regioselective Synthesis of Benzylsilanols from Kobayashi‐Type Reagents via C(sp3)─H Bond Activating 1,4‐Palladium Migration

open access: yesAngewandte Chemie, EarlyView.
A Pd‐catalyzed regioselective synthesis of benzylsilanols from Kobayashi‐type reagents has been developed through a mechanistically distinct approach involving 1,4‐Pd migration followed by intramolecular transmetalation. The reaction can be combined with various prior transition‐metal‐catalyzed processes and the resulting benzylsilanols have been ...
Ryo Shintani, Keisuke Tachibana
wiley   +2 more sources

A novel diethyl 2-(9-fluorenyl) malonate functionlized SBA-15 for selective optical sensing of Iron [PDF]

open access: yesJournal of Nanostructures, 2019
In this study, highly ordered mesoporous silica material (SBA-15) functionalized with Diethyl 2 - (9 -fluorenyl) malonate as a flourophore is reported.
Alireza Badiei   +2 more
doaj   +1 more source

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