Results 61 to 70 of about 2,560 (205)

Data_Sheet_2_Establishing Predictive Models for Solvatochromic Parameters of Ionic Liquids.xlsx

open access: yes, 2019
The use of ionic liquids (ILs) in applications ranging from catalysis to reaction media in organic synthesis has been successfully demonstrated in several cases.
Kallidanthiyil Chellappan Lethesh (1350189)   +1 more
core   +1 more source

Utilização do pireno como uma sonda fluorescente na investigação de ligações intermoleculares em misturas binárias de solventes [PDF]

open access: yes, 2002
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Fisícas e Matemáticas. Programa de Pós-Graduação em Química.Estudo da fluorescência do pireno em misturas binárias compreendendo um solvente não prótico [acetonitrila, N ...
Silva, Marcos André do Rego
core  

Accessing Sn≥2 States of a TADF Emitter by Femtosecond NIR Spectroscopy

open access: yesChemistry – A European Journal, EarlyView.
The depicted thermally activated delayed fluorescence (TADF) emitter was studied by femtosecond near‐infrared (NIR) spectroscopy. A prominent NIR transition was shown to be strongly solvent‐dependent, with implication for intersystem crossing in the compound.
Wiebke Haselbach   +7 more
wiley   +1 more source

Bright Solvatochromic Fluorophores With Dual Emission Enabled by a Donor‐Engineering Strategy

open access: yesChemistry – A European Journal, EarlyView.
We screened tertiary amines for installation on the donor unit of highly emissive donor–acceptor‐type solvatochromic fluorophores based on a 9,9‐dimethyl‐2‐phenyl‐9H‐fluorene scaffold, with the aim of enabling two bright emissive states to coexist. As a result, the azetidine derivative [4] and the azepane derivative [7] exhibited clear dual emission ...
Kensei Konishi, Gen‐ichi Konishi
wiley   +1 more source

Solvatochromic parameters for binary mixtures of an ionic liquid with various protic molecular solvents [PDF]

open access: yesMonatshefte für Chemie - Chemical Monthly, 2008
Solvatochromic parameters (E N , normalized polarity parameter; π*, dipolarity/polarizability; β, hydrogen-bond acceptor basicity; α, hydrogen-bond donor acidity) have been determined for binary mixtures of propan-2-ol, propan ...
Khodadadi-Moghaddam, Mohammad   +2 more
openaire   +1 more source

Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method.
ALEKSANDAR D. MARINKOVIC   +3 more
doaj  

Synthesis and Optical Properties of Diboron Complexes of 1,4‐Anthraquinone Derivatives

open access: yesChemistry – A European Journal, EarlyView.
1,4‐Diboron complexes exhibit near‐infrared fluorescence, in contrast to non‐emissive 1,5‐diboron analogues. Fluorescence quantum yields decrease with increasing electron‐donating substituents, attributed to enhanced nonradiative decay via intramolecular PeT.
Yasuhiro Kubota   +10 more
wiley   +1 more source

BNB/NBN‐Phenalenyl‐2'‐deoxyuridines as a Fluorophore–Quencher Pair in DNA

open access: yesAngewandte Chemie, Volume 138, Issue 23, 1 June 2026.
Two BN‐chromophore‐extended nucleosides containing electronically complementary BNB‐ and NBN‐doped phenalenyls were synthesised and incorporated into deoxyribonucleic acid (DNA) oligonucleotides. These chromophores act as an efficient fluorophore–quencher pair under aqueous conditions.
Sarah Lutz   +6 more
wiley   +2 more sources

Unimolecular Solvolyses in Ionic Liquid: Alcohol Dual Solvent Systems

open access: yesMolecules, 2016
A study was undertaken of the solvolysis of pivaloyl triflate in a variety of ionic liquid:alcohol solvent mixtures. The solvolysis is a kΔ process (i.e., a process in which ionization occurs with rearrangement), and the resulting rearranged carbocation ...
Elizabeth D. Kochly   +2 more
doaj   +1 more source

Xylose Acetals ‐ a New Class of Sustainable Solvents and Their Application in Enzymatic Polycondensation

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova   +8 more
wiley   +1 more source

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