Results 101 to 110 of about 80,245 (335)

Desolvation‐Induced Network Reformation and Cracking in the Single Crystals of Hydrogen‐Bonded Frameworks Composed of Tetraazaanthraquinone and Anthraquinone Derivatives

open access: yesAngewandte Chemie, EarlyView.
Two solvated hydrogen‐bonded organic frameworks (HOFs) based on tetraazaanthraquinone and anthraquinone were found to undergo quasi single‐crystal‐to‐single‐crystal transformations through hydrogen‐bond cleavage and re‐formation. These transformations induced crystal crack propagations, and molecular‐level correlations between the structural ...
Haruka Kubo   +2 more
wiley   +2 more sources

AI‐Enhanced Surface‐Enhanced Raman Scattering for Accurate and Sensitive Biomedical Sensing

open access: yesAdvanced Intelligent Discovery, EarlyView.
AI‐SERS advances spectral interpretation with greater precision and speed, enhancing molecular detection, biomedical analysis, and imaging. This review explores its essential contributions to biofluid analysis, disease identification, therapeutic agent evaluation, and high‐resolution biomedical imaging, aiding diagnostic decision‐making.
Seungki Lee, Rowoon Park, Ho Sang Jung
wiley   +1 more source

Enantiopure Chiral Crystals: A Powerful Tool for Absolute Asymmetric Synthesis

open access: yesAsian Journal of Organic Chemistry, EarlyView.
This review covers absolute asymmetric syntheses, which allow the preparation of enantiomerically enriched chiral compounds from achiral precursors. By exploiting the crystallization of certain compounds as a conglomerate, enantiopure chiral crystals are spontaneously obtained.
Jiacheng Li, Valérie Alezra
wiley   +1 more source

Clar covering polynomials of polycyclic aromatic hydrocarbons

open access: yesAIMS Mathematics
Polycyclic aromatic hydrocarbon (PAH) is a compound composed of carbon and hydrogen atoms. Chemically, large PAHs contain at least two benzene rings and exist in a linear, cluster, or angular arrangement.
Peirong Li   +3 more
doaj   +1 more source

Synthesis of 1‐Naphthylamines Utilizing [4 + 2] Cycloaddition Between 3‐Amino‐2‐pyrones and Benzynes

open access: yesAsian Journal of Organic Chemistry, EarlyView.
Synthesis of 1‐naphthylamines is developed using [4 + 2] cycloaddition between 3‐amino‐2‐pyrone, which is prepared by the conjugate addition reaction of diethyl 2‐aminomalonate to alkynyl ketones, and benzyne generated from o‐silylaryl triflates. This synthetic strategy was successfully applied to the syntheses of iodonaphthalene, naphthylimide, and ...
Atsuya Kawazoe   +2 more
wiley   +1 more source

Infrared and ultraviolet spectrophotometric analysis of chromatographic fractions of crude oils and petroleum products

open access: yesBulletin of the Chemical Society of Ethiopia, 2007
Samples of light, medium and heavy Nigerian crude oils and petroleum products including diesel oil, engine oil (SAE 40) and gasoline (PMS) have been separated into four fractions of saturates, monoaromatics, diaromatics and polyaromatics by elution ...
E.O. Odebunmi, S.A. Adeniyi
doaj  

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