Results 11 to 20 of about 551,189 (264)

Solvent Effects on Electrophilicity

open access: yesJournal of the American Chemical Society, 2001
Continuum solvent effect on the electrophilicity index recently proposed by Parr and co-workers (Parr, R. G.; von Szentpaly, L.; Liu, S. J. Am. Chem. Soc. 1999, 121, 1922) is discussed in detail. Solvent effect is introduced using the self-consistent isodensity polarized continuum model (SCI-PCM).
Pérez, Patricia   +2 more
openaire   +9 more sources

Investigation of Photochromic Fluorescence Features and Synthesis of Diarylethene Type Naphthalimide Compounds

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2020
The aim of the study was to synthesise novel photo-exchangeable photochromic fluorescence compounds. Starting from N-butyl-4-bromo-3-iodo-1,8-naphthalimide new compounds: 3,4-Bis(3,5-dimethyl-4-pyrazolyl)-N-butyl-1,8-Naphthalimide 6 and 3,4-Bis (1,3,5 ...
Ersin ORHAN, Mustafa NARİN
doaj   +1 more source

Novel Approach to the Preparation of Lead Chalcogenide Colloidal Quantum Dots and Properties Thereof

open access: yesMaterials Proceedings, 2023
In this work, we report the study of resizing of lead chalcogenide quantum dots, both PbS and PbSe, in the presence of the oleylamine/oleic acid mixture. We demonstrate that the resizing of lead chalcogenide nanocrystals could be performed in aprotic non-
Ivan A. Shuklov, Irina I. Soboleva
doaj   +1 more source

Solvent effects in copolymerization

open access: yesMacromolecular Rapid Communications, 1995
AbstractExtension of the Mayo‐Lewis Model of copolymerization concerning solvent effects in free‐radical polymerization is discussed on the basis of the bootstrap and penultimate unit effects.
ODRISCOLL, KF   +3 more
openaire   +4 more sources

Modelos contínuos do solvente: fundamentos Continuum solvation models: fundamentals

open access: yesQuímica Nova, 2006
Continuum solvation models are nowadays widely used in the modeling of solvent effects and the range of applications goes from the calculation of partition coefficients to chemical reactions in solution.
Josefredo R. Pliego Jr
doaj   +1 more source

Trisübstitüe Hetarilazo İndol Boyalarının Sentezi ve Absorpsiyon Özelliklerinin İncelenmesi

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2020
Bu çalışmada, çeşitli aromatik aminler ile hazırlanan diazonyum tuzlarının, 2-(4-metilfenil)-1H-indol ve 2-(4-klorfenil)-1H-indol bileşikleri ile azo kenetlenmesi sonucu, bir dizi yeni hetarilazo indol boyası sentezlendi.
Mehmet ULUTÜRK, Tahir TİLKİ
doaj   +1 more source

Solvent-dependent synthesis and mono-hydrolysis of di-Schiff base of (+/-)trans-1,2-cyclohexanediamine and 2-pyridinecarboxaldehyde in Cu(II), Co(II) and Zn(II) complexes [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
The Schiff base ligand trans-N,N′-bis[2-pyridinecarboxylidene] cyclohexane-1,2-diamine (L) was synthesized. This ligand when stirred with 1 equiv of MCl2.xH2O (M = Cu, Co, Zn) in ethanol, undergoes partial hydrolysis of the imino bond and the result ...
Lashanizadegan Maryam, Sarkheil Marzieh
doaj   +1 more source

Effects of Water Addition on a Catalytic Fluorination of Dienamine

open access: yesMolecules, 2019
We investigate the effects of water addition on a highly stereocontrolled fluorination of dienamine generated by α-branched enals and 6′-hydroxy-9-amino-9-deoxy-epi-quinidine with N-fluorobenzenesulfonimide (NFSI) in the presence of Brø ...
Daiki Kuraoku   +5 more
doaj   +1 more source

Solvent effects on the photooxidation of indolepyrazines

open access: yesPhotochemical & Photobiological Sciences, 2022
AbstractPhotodestruction of 2-(pyrazin-2′-yl)-1H-indole and 2,5-di(1H-indol-2′-yl)pyrazine involves singlet oxygen generation and its rapid insertion into the indole ring with the formation of benzoxazinone derivatives: 2-(pyrazin-2-yl)-4H-3,1-benzoxazin-4-one and 2-[5-(1H-indol-2-yl)pyrazin-2-yl]-4H-3,1-benzoxazin-4-one.
Barbara Golec   +4 more
openaire   +2 more sources

Differentiation of Medicinal Plants According to Solvents, Processing, Origin, and Season by Means of Multivariate Analysis of Spectroscopic and Liquid Chromatography Data

open access: yesMolecules, 2023
Effects of processing and extraction solvents on antioxidant properties and other characteristics were evaluated for ten medicinal plant species originating from two different localities and two production years. A combination of spectroscopic and liquid
Lenka Burdejova   +3 more
doaj   +1 more source

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