Results 91 to 100 of about 84,757 (292)

Regulated Ion‐Diffusion Hydrogels for Subtle and Multimodal Temperature‐Strain Sensing in Wound Monitoring

open access: yesAdvanced Functional Materials, EarlyView.
A soft, dual‐channel hydrogel patch enables simultaneous detection of wound temperature and strain by integrating ion‐diffusion‐mediated thermoelectric and resistive sensing. The conformal design maintains stable performance during motion, capturing subtle inflammatory and mechanical changes for continuous wound monitoring.
Yu Fang   +7 more
wiley   +1 more source

On the possibility of detecting low barrier hydrogen bonds with UV spectroscopy and kinetic measurements [PDF]

open access: yes, 2009
Recent Experimental evidence has pointed that in many enzyme-catalyzed biochemical pathways a short, strong hydrogen bond between an enzyme and substrate leads to an important contribution to enzyme catalysis.
NC DOCKS at The University of North Carolina Wilmington   +1 more
core  

Low Barrier Hydrogen Bonds: Getting Close, but Not Sharing...

open access: yesACS Central Science, 2015
Judith Klinman discusses the insights Oltrogge and Boxer provide regarding bond cleavage enzymes in their studies of pKa-modified GFPs.
openaire   +4 more sources

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

Systematic studies of crystal structures under non-ambient conditions [PDF]

open access: yes, 2004
Variable temperature single crystal X-ray diffraction analysis has been used to study four molecular systems: 4-(p-trlfluoromethyl phenylethynyl) prefluorotoluene (1), 2-methyl-4-(4-trifluoromethyl-phenyl) but-3-yn-2-ol (2), phenylethynyl ...
Smith, Philip S.
core  

Bio-Inspired Hydrogen-Bond Cross-Link Strategy toward Strong and Tough Polymeric Materials [PDF]

open access: yes, 2015
It remains a huge challenge to create advanced polymeric materials combining high strength, great toughness, and biodegradability so far. Despite enhanced strength and stiffness, biomimetic materials and polymer nanocomposites suffer notably reduced ...
Guo, Qipeng   +7 more
core   +1 more source

Biomimetic and Compressible Wood Phase Change Gel With Hierarchically Aligned Lamellar Structure for Controlled Thermal Management

open access: yesCarbon Energy
The recovery and utilization of ubiquitous low‐grade heat are crucial for mitigating the fossil energy crisis. However, uncontrolled spontaneous heat dissipation limits its practical application.
Jiazuo Zhou   +13 more
doaj   +1 more source

Solid‐State 17O NMR Reveals Hydrogen‐Bonding Energetics: Not All Low‐Barrier Hydrogen Bonds Are Strong

open access: yesAngewandte Chemie International Edition, 2017
AbstractWhile NMR and IR spectroscopic signatures and structural characteristics of low‐barrier hydrogen bond (LBHB) formation are well documented in the literature, direct measurement of the LBHB energy is difficult. Here, we show that solid‐state 17O NMR spectroscopy can provide unique information about the energy required to break a LBHB.
Lu, Jiasheng   +5 more
openaire   +5 more sources

Intrinsic Photoactive Star ZnPc–Poly(glutamate) Nanoplatforms for Multimodal Glioblastoma Therapy and Brain‐Targeted Delivery

open access: yesAdvanced Functional Materials, EarlyView.
An intrinsic photoactive star‐shaped zinc phtalocyanine‐poly(L‐glutamic acid) (ZnPc‐PGA) nanoplatform for multimodal glioblastoma (GBM) therapy and brain‐targeted elivery. A ZnPc‐PGA‐based multifunctional theranostic nanocarrier platform enables image‐guided, multimodal GBM therapy. ZnPc‐PGA nanocarriers support the integration of fluorescence imaging,
Amina Benaicha‐Fernández   +14 more
wiley   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim   +21 more
wiley   +1 more source

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