Results 31 to 40 of about 174,553 (360)

Preparation and Wave-absorbing Performance of Retinyl Schiff Base Salts Coordinated with Rare Earth La3+ and Ce3+ Ions

open access: yesJournal of Aeronautical Materials, 2018
With vitamin A acetate as raw material, ethylenediamine retinyl Schiff base salts coordinated with rare earth ion La3+, Ce3+ were synthesized, and the structure of the products was characterized by FT-IR and Raman spectra.
LIU Huteng   +5 more
doaj   +1 more source

Schiff bases and their possible therapeutic applications: A review

open access: yesResults in Chemistry
Schiff base (SB) represents a category of organic compounds in which a nitrogen atom with a double bond maintains its stereochemistry. The long history of Schiff base has been fascinating chemists to explore its new dimension by generating optimal ...
Nidhi   +5 more
doaj   +1 more source

Fluorescent turn-on sensors based on pyrene-containing Schiff base derivatives for Cu2+ recognition: spectroscopic and DFT computational studies [PDF]

open access: yes, 2016
A new fluorescent chemosensor L1, pyrene containing long chain Schiff base derivative in 1-position has been synthesized. Similarly, the receptors L2 and L3 are also designed in order to compare the binding ability for detection of Cu2+.
Georghiou, Paris E.   +8 more
core   +1 more source

Synthesis and photophysical study of divalent complexes of chelating Schiff base

open access: yesBaghdad Journal of Biochemistry and Applied Biological Sciences, 2020
Background: Schiff base compounds derivative from1,2,4-triazole, and their transition metal complexes play an essential role in coordination and bioinorganic chemistry due to biological and industrial applications. Objectives: This work aims to prepare
Alaa Rashad   +4 more
doaj  

The two-photon reversible reaction of the bistable jumping spider rhodopsin-1 [PDF]

open access: yes, 2019
Bistable opsins are photopigments expressed in both invertebrates and vertebrates. These light-sensitive G-protein-coupled receptors undergo a reversible reaction upon illumination.
Deupi, Xavier   +7 more
core   +1 more source

Modeling hepatic fibrosis in TP53 knockout iPSC‐derived human liver organoids

open access: yesMolecular Oncology, EarlyView.
This study developed iPSC‐derived human liver organoids with TP53 gene knockout to model human liver fibrosis. These organoids showed elevated myofibroblast activation, early disease markers, and advanced fibrotic hallmarks. The use of profibrotic differentiation medium further amplified the fibrotic signature seen in the organoids.
Mustafa Karabicici   +8 more
wiley   +1 more source

Inactivation of Mandelate Racemase by 3-Hydroxypyruvate Reveals a Potential Mechanistic Link between Enzyme Superfamilies [PDF]

open access: yes, 2015
Mandelate racemase (MR), a member of the enolase superfamily, catalyzes the Mg2+-dependent interconversion of the enantiomers of mandelate. Several α-keto acids are modest competitive inhibitors of MR [e.g., mesoxalate (Ki = 1.8 ± 0.3 mM) and 3 ...
Bearne, Stephen L.   +3 more
core   +1 more source

Excitations in photoactive molecules from quantum Monte Carlo [PDF]

open access: yes, 2004
Despite significant advances in electronic structure methods for the treatment of excited states, attaining an accurate description of the photoinduced processes in photoactive biomolecules is proving very difficult.
Claudia Filippi   +3 more
core   +3 more sources

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Synthesis, characterization, and application of thio-salicylaldehyde schiff base complexes for Cr (VI) adsorption

open access: yesiScience
Summary: This study investigates the effectiveness of a Schiff base derived from thio-carbohydrazide and salicylaldehyde as an adsorbent for Cr(VI) removal from wastewater.
Simranjeet Singh   +6 more
doaj   +1 more source

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