Results 111 to 120 of about 55,695 (341)

A screening method for ranking chemicals by their fate and behaviour in the environment and potential toxic effects in humans following non-occupational exposure [PDF]

open access: yes, 2004
A large number of chemicals are released intentionally or unintentionally into the environment each year. These include thousands of substances that are currently listed worldwide and several hundred new substances added annually (Mücke et al., 1986 ...
Capelton, A   +2 more
core  

Dual Regulation of Molecular Rigidity and Orbital Engineering of Pt(II) Emitters for High‐Performance Deep‐Blue OLEDs

open access: yesAdvanced Science, EarlyView.
Four novel tetradentate Pt(II) emitters (PtCY, PtCY‐F, PtCY‐tBu, PtCY‐tBuF) are designed through synergistic strategy of molecular orbital engineering and steric hindrance effect. PtCY‐tBuF‐based device B4 achieves a high maximum luminance of 45 621 cd m−2, and record high external quantum efficiency (EQE) of 27.1%, 24.3%, and 21.7% at high brightness ...
Chengyao Zhang   +4 more
wiley   +1 more source

Enhanced Single‐Particle Upconversion Imaging via Energy Migration Boosting

open access: yesAdvanced Science, EarlyView.
A core‐shell‐shell Yb3⁺/Er3⁺ UCNP architecture is engineered to balance energy migration and back energy transfer, yielding more than a tenfold enhancement in single‐particle brightness. Leveraging these optimized probes, it achieves long‐term, high‐resolution single‐particle tracking in live neurons, uncovering coordinated transport mechanisms of ...
Yanxin Zhang   +7 more
wiley   +1 more source

Unveiling Thermoelectric Properties of SURMOF Nanofilms: A New Frontier in Molecular Thermoelectrics

open access: yesAdvanced Science, EarlyView.
Layer‐by‐layer engineered surface‐mounted metal‐organic framework (SURMOF) nanofilms exhibit enhanced thermoelectric performance through precise control of thickness, molecular alignment, and guest doping. Abstract Molecular thermoelectric materials, which harness molecular‐level design principles to optimize energy conversion, have emerged as a ...
Jiwoo Park   +3 more
wiley   +1 more source

Unique Aerofoil‐Structured Microfluidics for High Throughput Lipid Nanoparticle Formulation Screening and Scale‐up

open access: yesAdvanced Science, EarlyView.
This study presents aerofoiled microfluidic structures optimized for efficient mixing and lipid nanoparticle (LNP) formation across broad flow rates. Based on this design, two dedicated systems are introduced: MiNANO‐form for high‐throughput formulation screening and MiNANO‐scale for continuous large‐scale production, enabling reproducible, high ...
Dongsheng Liu   +8 more
wiley   +1 more source

Mechanical Stretch‐Induced Interlayer Coordination between MMP2 and COL17A1 Exacerbates Regenerative Exhaustion in Skin

open access: yesAdvanced Science, EarlyView.
Regeneration reaches a hidden limit under mechanical stretch. Prolonged tension alters dermal–epidermal communication, exhausting epidermal stem cells via MMP2–COL17A1 signaling. MMP2 inhibition by Marimastat preserves adhesion and regenerative capacity, offering a potential strategy to overcome the inherent boundaries of skin expansion.
Yidan Sun   +13 more
wiley   +1 more source

Studies of Conformational Equilibria and Equilibration by Nuclear Magnetic Resonance Spectroscopy [PDF]

open access: yes, 1966
The study of conformational equilibria and equilibration by nuclear magnetic resonance in cyclic compounds has been found to be considerably facilitated by use of ^(19)F spectra of gem-fluoro derivatives.
Roberts, John D.
core  

Ultrathin, Unsinkable, Janus‐Faced Solar–Thermal Interfacial Evaporator for High‐Throughput Seawater Distillation and Solar‐Water Production

open access: yesAdvanced Science, EarlyView.
A nanostructured carbon‐coated porous polymeric scaffold is developed to accelerate the hydrological cycle, enabling solar–thermal freshwater production from saline water with reduced energy consumption and CO2 footprint. Abstract Solar–thermal distillation offers immense and hitherto untapped potential for energy‐efficient, sustainable freshwater ...
Mohammed Aslam Villan   +6 more
wiley   +1 more source

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