Results 61 to 70 of about 33,101 (301)

Mitigating Efficiency Roll‐Off in Phosphor‐Sensitized Fluorescence OLEDs via Molecular Polarity‐Based Benzofuropyridine Host Engineering

open access: yesAdvanced Optical Materials, EarlyView.
Positional isomerism in dibenzofuran‐based n‐type hosts modulates molecular polarity, charge‐transport balance, and emissive‐layer packing. The higher‐polarity BFPDB‐2 host facilitates efficient energy funneling, reduced aggregation, and preferential dipole orientation, leading to phosphor‐sensitized fluorescence OLEDs with enhanced external quantum ...
Nargis Ali   +3 more
wiley   +1 more source

Results of the monitoring of non dioxin‐like PCBs in food and feed

open access: yesEFSA Journal, 2010
Non dioxin‐like polychlorinated biphenyls (NDL PCBs) are persistent organic chemicals that accumulate in the environment and humans and are associated with a broad spectrum of health effects.
European Food Safety Authority
doaj   +1 more source

Polychlorinated Biphenyls (PCBs) and Cognitive Deficits

open access: yesPediatric Neurology Briefs, 1990
The effects of prenatal exposure to polychlorinated biphenyls (PCBs) and related contaminants on the CNS function of infants born to women who had consumed Lake Michigan sports fish have been investigated in 236 children previously evaluated for PCB ...
J Gordon Millichap
doaj   +1 more source

Developmental exposure to non-dioxin-like polychlorinated biphenyls promotes sensory deficits and disrupts dopaminergic and GABAergic signaling in zebrafish

open access: yesCommunications Biology, 2021
Nadja Brun et al. characterize the impact of early exposure to polychlorinated biphenyls on neural development and behavior in zebrafish. Their results demonstrate that developmental exposure to these chemicals promotes sensory deficits and disrupts ...
Nadja R. Brun   +6 more
doaj   +1 more source

Halogenated biphenyls: molecular toxicology

open access: yes, 1982
The biologic and toxic effects of polychlorinated biphenyls (PCBs) are remarkably dependent on their structure. The most toxic PCBs, namely 3,3′,4,4′-tetra-, 3,3′,4,4′,5-penta- and 3,3′,4,4′,5,5′-hexachlorobiphenyl are substituted in at least one meta ...
T. Sawyer   +6 more
core   +1 more source

Naphthyridine‐Based Donor–Acceptor Boron Difluoride Complexes Targeting Red Emission in Organic Light‐Emitting Diodes

open access: yesAdvanced Optical Materials, EarlyView.
Four donor–acceptor boron difluoride complexes based on triphenylamine donor and a naphthyridine acceptor units were synthesized, studied, and applied as OLED emitters. They exhibit pronounced intramolecular charge transfer character, balanced charge transport properties, and tunable emission. Near‐unity PLQYs are achieved for selected compounds, while
Omar Lahna   +8 more
wiley   +1 more source

Soil-Air exchange controls on background atmospheric concentrations of organochlorine pesticides [PDF]

open access: yes, 2011
Soils are the major terrestrial reservoir of persistent organic pollutants, and thus net volatilization from soil, when it happens, may exert a control on the atmospheric occurrence and variability of organic pollutants.
Dachs, J.   +13 more
core   +1 more source

Helix Alignment, Chevrons, and Edge Dislocations in Twist‐Bend Ferroelectric Nematics

open access: yesAdvanced Science, EarlyView.
The recently discovered twist‐bend ferroelectric nematic (NTBF) is the new member of the multiferroic family, representing a fluid with an oblique helicoidal (heliconical) periodic structure of spontaneous electric polarization. The work presents a thorough exploration of the material properties of this phase, how the periodic modulation of ...
Bijaya Basnet   +8 more
wiley   +1 more source

Palladacarboxamide Capping Reagents for Carbon Isotope Labeling and Pharmaceutical Diversification

open access: yesAngewandte Chemie, EarlyView.
Herein, we present a method for carbon isotope labeling of arylamides via the coupling of air‐stable palladium carboxamide complexes and boronic ester/acids. A wide variety of functionalized boronic esters and acids have been coupled with simple palladium carboxamides complexes.
Daniel V. Hoffmann   +8 more
wiley   +2 more sources

Stable organic contaminants. Problems and ways of solving thems

open access: yesТонкие химические технологии, 2011
The article provides the results of polychlorinated biphenyls and pesticides inventory in the Russian Federation and data about releases of dioxins estimated on the basis of various sources. The article contains brief information on some new technologies
Yu. A. Treger
doaj  

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