Track topics on Twitter Track topics that are important to you
Electrospray ionization mass spectrometry with variable collision induced dissociation of the isolated [(cation)(2)anion](+) and/or [(anion)(2)cation](-) ions of imidazolium-, pyridinium-, pyrrolidinium-, and piperidinium-based ionic liquids (ILs) combined with a large set of anions, such as chloride, tetrafluoroborate, hexafluorophosphate, trifluoromethanesulfonate, and bis[(trifluoromethyl)sulfonyl]imide, was used to carry out a systematic and comprehensive study on the ionic liquids relative interaction energies. The results are interpreted in terms of main influences derived from the structural characteristics of both anion and cation. On the basis of quantum chemical calculations, the effect of the anion upon the dissociation energies of the ionic liquid pair, and isolated [(cation)(2)anion](+) and/or [(anion)(2)cation](-) aggregates, were estimated and are in good agreement with the experimental data. Both experimental and computational results indicate an energetic differentiation between the cation and the anion to the ionic pair. Moreover, it was found that the quantum chemical calculations can describe the trend obtained for the electrostatic cation-anion attraction potential. The impact of the cation-anion interaction strengths in the surface tension of ionic liquids is further discussed. The surface tensions dependence on the cation alkyl chain length, and on the anion nature, follows an analogous pattern to that of the relative cation-anion interaction energies determined by mass spectrometry.
QOPNA and §CICECO, Departamento de Química, Universidade de Aveiro , 3810-193 Aveiro, Portugal.
This article was published in the following journal.
Name: The journal of physical chemistry. B
Combination of the hydrophilic herbicidal anion with hydrophobic, antimicrobial ammonium cation allows to obtain compounds in ionic liquid form with better properties then conventional herbicides. Bot...
Ionic liquids of 1-butyl-3-methylimidazolium([BMIM]) cation with different anions (Cl-, Br-, I-, and BF4-), and their aqueous mixtures were investigated by using Raman spectroscopy and dispersion-incl...
Ionic liquids (ILs) were widely used in scientific and industrial application and have been reported to possess potential toxicity to the environment and human health. The effects of six typical N-met...
It is well known that gas-phase experiments and computational methods point to the dominance of dispersion forces in the molecular association of hydrocarbons. Estimates or even quantification of thes...
The use of newly synthesized alkylether-thiazolium ionic liquids as lubricants is described for the first time. Two ionic liquids composed of a thiazolium cation and a bis(trifluoromethanesulfonyl)ami...
The objective of the present study is to contribute to establishing in vivo phenotyping procedures for organic anionic transporter polypeptide 1B1 (OATP1B1), organic cation transporters 1 ...
Drug-drug Interaction Study Using Rosuvastatin as a Breast Cancer Resistant Protein (Efflux Transporter), Organic Anion-transporting Polypeptide (OATP)1B1, and OATP1B3 (Uptake Transporters) Probe Substrate
Evaluation of the potential perpetrator effect of BAY1841788 (ODM-201) on rosuvastatin pharmacokinetics
Background. Malignant fungating wounds(MFW) are caused by cancerous cells invading skin tissue, which exhibit increased bacterial burdens that not only result in a negative physical impact...
The patients were randomized into 3 groups: those patients undergoing a ionic silver-containing dressing (ISD) (Group 1), those undergoing a Mupirocin ointment application (MOA) (Group 2) ...
Evaluation of a new exercise machine designed to improve strength and speed of movement in the leg muscles. Investigators are trying to learn whether a new training method results in grea...
The internal resistance of a material to moving some parts of it parallel to a fixed plane, in contrast to stretching (TENSILE STRENGTH) or compression (COMPRESSIVE STRENGTH). Ionic crystals are brittle because, when subjected to shear, ions of the same charge are brought next to each other, which causes repulsion.
Salts that melt below 100 C. Their low VOLATILIZATION can be an advantage over volatile organic solvents.
Protein motif that contains a 33-amino acid long sequence that often occurs in tandem arrays. This repeating sequence of 33-amino acids was discovered in ANKYRIN where it is involved in interaction with the anion exchanger (ANION EXCHANGE PROTEIN 1, ERYTHROCYTE). Ankyrin repeats cooperatively fold into domains that mediate molecular recognition via protein-protein interactions.
A high molecular weight (220-250 kDa) water-soluble protein which can be extracted from erythrocyte ghosts in low ionic strength buffers. The protein contains no lipids or carbohydrates, is the predominant species of peripheral erythrocyte membrane proteins, and exists as a fibrous coating on the inner, cytoplasmic surface of the membrane.
The amount of force generated by MUSCLE CONTRACTION. Muscle strength can be measured during isometric, isotonic, or isokinetic contraction, either manually or using a device such as a MUSCLE STRENGTH DYNAMOMETER.
Collaborations in biotechnology
Commercial and academic collaborations are used throughout the biotechnology and pharmaceutical sector to enhance research and product development. Collaborations can take the form of research and evaluation agreements, licensing, partnerships etc. ...