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Showing 9985 to 9996 of 18259 entries
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Effects of Free Energy and Solvent on Rates of Intramolecular Electron Transfer in Organic Radical Anions.

The journal of physical chemistry. A

Parson WW.
PMID: 28868884
J Phys Chem A. 2017 Sep 28;121(38):7297-7306. doi: 10.1021/acs.jpca.7b08579. Epub 2017 Sep 14.

Rates of intramolecular electron transfer from a 1,1'-biphenylyl radical anion to six different acceptors on an androstane scaffold are examined with the aid of a theory that was developed recently to include effects of vibrational relaxations and dephasing. The...

Cloud point extraction of chlorophylls from spinach leaves using aqueous solutions of non-ionic surfactants.

ACS sustainable chemistry & engineering

Leite AC, Ferreira AM, Morais ES, Khan I, Freire MG, Coutinho JAP.
PMID: 30271686
ACS Sustain Chem Eng. 2018 Jan 02;6(1):590-599. doi: 10.1021/acssuschemeng.7b02931. Epub 2017 Nov 08.

Chlorophylls and their derivatives are currently used in a wide range of applications. To replace the volatile organic solvents commonly applied for their extraction from biomass, aqueous solutions of non-ionic surfactants are studied herein in the extraction of chlorophylls...

Characterization and prediction of chemical functions and weight fractions in consumer products.

Toxicology reports

Isaacs KK, Goldsmith MR, Egeghy P, Phillips K, Brooks R, Hong T, Wambaugh JF.
PMID: 28959598
Toxicol Rep. 2016 Sep 01;3:723-732. doi: 10.1016/j.toxrep.2016.08.011. eCollection 2016.

Assessing exposures from the thousands of chemicals in commerce requires quantitative information on the chemical constituents of consumer products. Unfortunately, gaps in available composition data prevent assessment of exposure to chemicals in many products. Here we propose filling these...

Crystallization-Induced Emission Enhancement of a Deep-Blue Luminescence Material with Tunable Mechano- and Thermochromism.

Small (Weinheim an der Bergstrasse, Germany)

Wu Z, Mo S, Tan L, Fang B, Su Z, Zhang Y, Yin M.
PMID: 30303290
Small. 2018 Oct;14(40):e1802524. doi: 10.1002/smll.201802524. Epub 2018 Sep 10.

Organic luminescent materials with the ability to reversibly switch the luminescence when subjected to external stimuli have attracted considerable interest in recent years. However, the examples of luminescent materials that exhibit multiresponsive properties are rarely reported. In this work,...

Excellent reusable chitosan/cellulose aerogel as an oil and organic solvent absorbent.

Carbohydrate polymers

Li Z, Shao L, Hu W, Zheng T, Lu L, Cao Y, Chen Y.
PMID: 29661308
Carbohydr Polym. 2018 Jul 01;191:183-190. doi: 10.1016/j.carbpol.2018.03.027. Epub 2018 Mar 13.

Absorption is one of the most important methods for oil spill cleanup. An ideal absorbent is expected to possess advantages of low cost, green, high absorption capacity and excellent reusability. In this paper, a new kind of cellulose aerogel...

Low-Temperature Cross-Linkable Small Molecules for Fully Solution-Processed OLEDs.

Chemistry (Weinheim an der Bergstrasse, Germany)

Lee S, Seo MH.
PMID: 30221405
Chemistry. 2018 Nov 27;24(66):17419-17423. doi: 10.1002/chem.201803308. Epub 2018 Oct 30.

Cross-linkable hole-transporting, host, and electron-transporting materials with a new cross-linking group, uracil, are designed and synthesized. These compounds exhibited good solubility in common organic solvents and excellent solvent resistance after cross-linking at a low temperature of 120 °C. The...

Sensitive Detection of a Nerve-Agent Simulant through Retightening Internanofiber Binding for Fluorescence Enhancement.

Analytical chemistry

Liu X, Gong Y, Zheng Y, Xiong W, Wang C, Wang T, Che Y, Zhao J.
PMID: 29320855
Anal Chem. 2018 Feb 06;90(3):1498-1501. doi: 10.1021/acs.analchem.7b04698. Epub 2018 Jan 16.

In this work, we develop fluorescent hierarchical nanofiber bundles 1, which involve the internanofiber hydrogen-bonding interactions, for rapid and sensitive detection of diethyl chlorophosphate (DCP) vapor. First, the internanofiber hydrogen-bonding strength can be weakened by photoexcitation, which thereby increases...

Surface Grafting Polyphosphoesters on Cellulose Nanocrystals To Improve the Emulsification Efficacy.

Langmuir : the ACS journal of surfaces and colloids

Hiranphinyophat S, Asaumi Y, Fujii S, Iwasaki Y.
PMID: 31389701
Langmuir. 2019 Sep 03;35(35):11443-11451. doi: 10.1021/acs.langmuir.9b01584. Epub 2019 Aug 20.

Particle-stabilized emulsion systems have been developed to address the problematic properties of conventional surfactants. However, the nature and properties of the fine particles used in such systems remain a critical issue for stability enhancement. Herein, we describe a thermoswitchable...

Rapid Solid-Liquid Dynamic Extraction (RSLDE): A Powerful and Greener Alternative to the Latest Solid-Liquid Extraction Techniques.

Foods (Basel, Switzerland)

Naviglio D, Scarano P, Ciaravolo M, Gallo M.
PMID: 31284507
Foods. 2019 Jul 05;8(7). doi: 10.3390/foods8070245.

Traditionally, solid-liquid extractions are performed using organic and/or inorganic liquids and their mixtures as extractant solvents in contact with an insoluble solid matrix (e.g., the Soxhlet method) or using sequential atmospheric pressure systems that require long procedures, such as...

Herstellung von (.

Chimia

Breitschuh R, Seebach D.
PMID: 28340641
Chimia (Aarau). 2006 Jun 01;44(6):216-218.

The readily available (R)-3-hydroxybutanoic acid (1) was treated with triethyl orthoacetate, with azeotropic removal of ethanol, to yield (6R)-2-ethoxy-2,6-dimethyl-1,3-dioxan-4-one (3a). Pyrolysis of 3a led to the β-Lactone of (S)-3-hydroxybutanoic acid and other products. The influence of pressure, temperature, solvents,...

Headspace single drop microextraction versus dispersive liquid-liquid microextraction using magnetic ionic liquid extraction solvents.

Talanta

An J, Rahn KL, Anderson JL.
PMID: 28340720
Talanta. 2017 May 15;167:268-278. doi: 10.1016/j.talanta.2017.01.079. Epub 2017 Jan 30.

A headspace single drop microextraction (HS-SDME) method and a dispersive liquid-liquid microextraction (DLLME) method were developed using two tetrachloromanganate ([MnCl

Achieving High Efficiency in Solution-Processed Perovskite Solar Cells Using C.

ACS applied materials & interfaces

Lin HS, Jeon I, Xiang R, Seo S, Lee JW, Li C, Pal A, Manzhos S, Goorsky MS, Yang Y, Maruyama S, Matsuo Y.
PMID: 30259726
ACS Appl Mater Interfaces. 2018 Nov 21;10(46):39590-39598. doi: 10.1021/acsami.8b11049. Epub 2018 Oct 11.

Fullerenes have attracted considerable interest as an electron-transporting layer in perovskite solar cells. Fullerene-based perovskite solar cells produce no hysteresis and do not require high-temperature annealing. However, high power conversion efficiency has been only achieved when the fullerene layer...

Showing 9985 to 9996 of 18259 entries