Results 71 to 80 of about 2,249 (138)

Leucaena Oil Functionalized With Osmium Tetroxide as a Precursor for Polyol‐Based Polyurethane

Journal of Polymer Science, EarlyView.
Leucaena leucocephala seed oil is converted into a hydroxyl‐functional biopolyol through OsO4‐mediated dihydroxylation. The resulting biopolyol shows a hydroxyl number of 160–175 mg KOH g−1 and is successfully used to produce flexible, open‐cell polyurethane foams, highlighting a renewable route for converting underutilized biomass into value‐added ...
Giovanni Miraveti Carriello, Lucas Repecka Alves, Guilherme Manassés Pegoraro, Henrique Solowej Medeiros Lopes, Amanda Stefanie Jabur de Assis, Thaís de Agrella Janolla, David Rodrigues Gomes, Diego Aleixo da Silva, Beatriz Merillas, Fabiana Aparecida Lobo, Fabio Minoru Yamaji, Maira de Lourdes Rezende, Aparecido Junior de Menezes, Giovanni Pimenta Mambrini   +13 more
wiley   +1 more source

Synthesis of novel multifunctional carbazole-based molecules and their thermal, electrochemical and optical properties

Beilstein Journal of Organic Chemistry, 2020
Two novel carbazole-based compounds 7a and 7b were synthesised as potential candidates for application in organic electronics. The materials were fully characterised by NMR spectroscopy, mass spectrometry, FTIR, thermogravimetric analysis, differential ...
Nuray Altinolcek, Ahmet Battal, Mustafa Tavasli, William J. Peveler, Holly A. Yu, Peter J. Skabara   +5 more
doaj   +1 more source

From Benzene to [3]Radialene: Topological Engineering of Pure Hydrocarbons for Long‐Wavelength Aggregation‐Induced Emission Luminogens

Aggregate, Volume 7, Issue 11, November 2026.
All‐carbon [3]radialene derivatives exhibit long‐wavelength emission via excited‐state charge transfer. A simple ring‐locking strategy effectively modulates their photophysical properties, yielding significantly enhanced aggregation‐induced emission characteristics in the deep‐red region.
Gaoqiang Xu, Jiaqi Peng, Liang Hao, Feng Gao, Songshan Dai, Liyuan Hou, Sheng Xie, Zebing Zeng, Jun Zhu, Parvej Alam, Bo Wu, Ben Zhong Tang, Zijie Qiu   +12 more
wiley   +1 more source

Thermally Activated Delayed Fluorescence: An Extended Study of Peripherally Substituted DMAC‐TRZ Analogues

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
A comprehensive experimental and theoretical study is presented of a family of TADF dyes. Comparing the behavior of structurally related dyes, we uncover the subtle and somewhat unexpected role of conformational degrees of freedom associated with peripheral groups that affect the delicate interplay of excited states that governs spin–orbit coupling ...
Andrea Landi, Ottavia Racchi, D. K. Andrea Phan Huu, Shohei Fukushima, Katsuaki Suzuki, Hironori Kaji, Cristina Sissa, Anna Painelli   +7 more
wiley   +1 more source

A BODIPY-Bridged Bisphenoxyl Diradicaloid: Solvent-Dependent Diradical Character and Physical Properties

Molecules, 2019
We report a new boron dipyrromethene (BODIPY)-bridged bisphenoxyl diradicaloid (2), which showed closed-shell diamagnetic character in less polar solvents such as dichloromethane but open-shell diradical character with paramagnetic activity in the very ...
Fang Miao, Hoa Phan, Jishan Wu
doaj   +1 more source

1H-1,2,3-triazolyl-1,6-naphthyridin-7(6H)-ones as Potential Fluorescent Nucleoside Analogues: Synthesis and Optical Properties

Molecules
In this article, we present the synthesis and the optical properties of three original molecules as potential fluorescent ribonucleoside analogues incorporating a 1,6-naphthyridin-7(6H)-one scaffold as a fluorescent nucleobase and a 1,2,3-triazole as a ...
Anissa Beghennou, Océane Rondot, Vincent Corcé, Candice Botuha   +3 more
doaj   +1 more source

A Comparative Study of New Fluorescent Anthraquinone and Benzanthrone α-Aminophosphonates: Synthesis, Spectroscopy, Toxicology, X-ray Crystallography, and Microscopy of Opisthorchis felineus

Molecules
In this research, we explore the synthesis of and characterize α-aminophosphonates derived from anthraquinone and benzanthrone, focusing on their fluorescence properties and potential applications in confocal laser scanning microscopy (CLSM).
Armands Maļeckis, Marija Cvetinska, Muza Kirjušina, Ligita Mežaraupe, Sanita Kecko, Inese Gavarāne, Vladimir Kiyan, Lyudmila Lider, Veronika Pavlova, Marina Savicka, Sergey Belyakov, Elena Kirilova   +11 more
doaj   +1 more source

A High Sensitivity and Wide Dynamic Range Fiber-Optic Sensor for Low-Concentration VOC Gas Detection

Sensors, 2014
In this paper, we propose a volatile organic compound (VOC) gas sensing system with high sensitivity and a wide dynamic range that is based on the principle of the heterodyne frequency modulation method.
Md. Rajibur Rahaman Khan, Shin-Won Kang
doaj   +1 more source

Preparation and properties of perichromic dye: an undergraduate laboratory

Química Nova, 2014
An undergraduate experiment that illustrates the phenomenon of perichromism-the sensitivity of a dye to its microenvironment, as assessed by color changes of its solutions-is described.
Priscilla Abarca, Patricia Silva, Iriux Almodovar, Marcos Caroli Rezende   +3 more
doaj   +1 more source

Solvatochromism in Solvent Mixtures: A Practical Solution for a Complex Problem

Liquids
Many reactions are carried out in solvent mixtures, mainly because of practical reasons. For example, E2 eliminations are favored over SN2 substitutions in aqueous organic solvents because the bases are desolvated.
Omar A. El Seoud, Shirley Possidonio, Naved I. Malek   +2 more
doaj   +1 more source