Results 21 to 30 of about 576,075 (159)
Designable Nanozymes for Site‐Selective Amide/Ester Hydrolysis
Small, EarlyView.Enzymes involved in posttranslational modifications of proteins routinely perform site‐selective catalysis, regardless of the intrinsic reactivities of the myriad of functional groups present. Synthetic mimics of these enzymes are created through molecular imprinting, with catalytic groups positioned precisely near the targeted amide or ester bonds ...
Shashank Singh, Rasmita Barik, Yan Zhao
wiley +1 more source
Solvent effect on Hammett sigma constants [PDF]
, 2019 Ispitan doprinos specifičnih interakcija DMSO-a prilikom računa Hammettovih sigma konstanti reakcije disocijacije para-supstituiranih benzojevih kiselina.
Kern, Matej
core
The Hammett substituent constants and effects of medium
, 1986 The dissociation constants measured earlier for 35 substituted benzoic acids in seven solvents (water, methanol, ethanol, dimethylformamide, acetonitrile, sulfolane, and acetone) have been submitted to the principal components analysis and the factor ...
Miroslav Večeřa +2 more
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ChemPhotoChem, Volume 10, Issue 11, November 2026.A photophysical study involving 36 carbazole derivatives combines steady‐state/time‐resolved spectroscopy, temperature‐dependent emission, and singlet dioxygen sensitization metrics with conceptual density functional theory calculations. This comprehensive study establishes robust structure–property relationships to guide the rational design of new ...
Franco M. Cabrerizo +8 more
wiley +1 more source
Sigma Theta Tau International 44th Biennial Convention 2017 Conference Proceedings [PDF]
, 2018 Sigma Theta Tau International the Honor Society of Nursing (Sigma) conducted its 44th Biennial Convention in Indianapolis, IN, USA, 28 October-1 November 2017.
Sigma Theta Tau International
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Angewandte Chemie, Volume 138, Issue 34, 17 August 2026.A 31P{1H} NMR method enabling direct measurement of transmetalation at Ni(II) is disclosed, providing an extensive kinetic dataset. Rates span five orders of magnitude and exhibit strong ligand dependence, with monodentate ligands promoting transmetalation.
Nicholas S. D. Solomon +3 more
wiley +2 more sources
Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.A library of 21 tetrakis(phenothiazinyl)‐substituted silanes with broadly variable substituent decoration, which are fully reversible multistage redox systems with intense tunable emission from deep blue to yellow–green (441–533 nm), was rapidly synthesized by bromine–lithium exchange/borylation–Suzuki coupling of tetrakis(4‐bromophenyl)silane or by ...
Thomas P. M. Merke +4 more
wiley +1 more source
, 2013 The Hammett para constant (sigma(p)) of the acetoxy group has been estimated by applying widely available quantum chemical descriptors, such as NPA charges, Wiberg bond indices, electron densities at bond critical points, as well as electrostatic ...
Kégl, Tamás +2 more
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Reversed substituent effect on C=O stretching vibrations in hydantoin derivatives [PDF]
, 1997 The infrared spectra have been recorded for thirteen 3-substituted-5,5-dimethylhydantoins in the region of fundamental C=O stretching vibrations in dichloromethane. The frequencies of symmetric and asymmetric C=O stretching vibrations are correlated with
Ušćumlić, Gordana +2 more
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Cross‐Dehydrogenative Coupling Reactions With Redox‐Active Guanidine Reagents
Chemistry – A European Journal, Volume 32, Issue 38, 13 October 2026.ABSTRACT Cross‐dehydrogenative coupling (CDC) reactions are attractive and environmentally friendly ways to form new C‐C and other element‐element bonds. Here, we report the first CDC reactions triggered by a redox‐active guanidine reagent. N‐phenyltetrahydroisoquinoline and derivatives with electron‐donating and withdrawing substituents at the N ...
Petra Walter +2 more
wiley +1 more source