Results 41 to 50 of about 64,953 (273)
A Pyridinium Ylide-alkylation Strategy for the Structural Diversification of N-Carbamoyl Pyridinium Salts [PDF]
A pyridinium-ylide alkylation strategy has been developed for accessing N,N-disubstituted carbamoyl pyridinium salts that possess multiple nucleophilic sites.
Michael, Taylor +2 more
core +2 more sources
Angewandte Chemie, EarlyView.An experimental–computational framework links I‐X bond polarization and the hydrolytic stability of IX2− intermediates. Guided by this insight, PyBr is introduced as a functional bromide source to activate highly reversible I0/I+ chemistry and integrated with a zincophilic sulfonate‐rich hydrogel. This design enables 20 000 stable cycles in a coin cell
Rujiao Ma +5 more
wiley +2 more sources
Bright NIR-Emitting Styryl Pyridinium Dyes with Large Stokes’ Shift for Sensing Applications
Biosensors, 2023 Two NIR-emitting donor-π-acceptor (D-π-A) type regioisomeric styryl pyridinium dyes (1a–1b) were synthesized and studied for their photophysical performance and environment sensitivity. The two regioisomers, 1a and 1b, exhibited interesting photophysical
Nirasha I. Wickramasinghe +5 more
doaj +1 more source
Angewandte Chemie, EarlyView.Pt1, an organometallic platinum‐based complex, act as a modulator of redox homeostasis in cnidarians, regulating cellular functions and life‐cycle dynamics. In Nematostella vectensis, it mitigates oxidative stress, strengthens detox systems and accelerates development.
Giuseppina Tommasini +13 more
wiley +2 more sources
Crystal structure of 2-cyano-1-methylpyridinium perchlorate
Acta Crystallographica Section E: Crystallographic Communications, 2015 The asymmetric unit of the title salt, C7H7N2+·ClO4−, comprises two independent formula units. The solid-state structure comprises corrugated layers of cations and of anions, approximately parallel to (010).
Vu D. Nguyen +3 more
doaj +1 more source
Reactivity of Halo(pyridinium)carbenes
, 2016 The reactivity of chloro- and fluoro(N-methyl-3-pyridinium)carbenes was examined by laser flash photolysis, where the halo(pyridinium)carbenes formed ylides with pyridine, acetonitrile, and acetone.
Reinaldo Moya-Barrios (2333677) +2 more
core +1 more source
Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation
Advanced Optical Materials, EarlyView.A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu +10 more
wiley +1 more source
Mechanophotochemistry: Lighting up EDA Complexes in the Solid State
Angewandte Chemie, EarlyView.Examples of mechanophotochemical EDA complex‐mediated radical reactions, including a Giese reaction, a C─S cross‐coupling reaction, a phosphorylation reaction, and a sulfonylation reaction are shown to rapidly proceed in air using visible light excitation.
Aniket Kumar Srivastawa +1 more
wiley +2 more sources
Amination of Phenols and Halophenols via Pyridinium–Iridium Dual Photocatalysis [PDF]
In this study, we present a photochemical method for the amination of phenols (C–H) and halophenols (SNAr), facilitated by dual catalytic pathways involving both Ir(III) photocatalysis and phenol–pyridinium EDA complexation. By incorporating a pyridinium
Marisa C., Kozlowski +3 more
core +2 more sources
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source