A gel lattice alters the phase state of a solvent

Стовбун, С. В.; Скоблин, А. А.; Шилкина, Н. Г.; Lomakin, S. M.; Zlenko, Dmitry V.

doi:10.1039/d2sm00767c

Cited by 4 publications

(2 citation statements)

References 41 publications

(81 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The latter provide an increase in viscosity and can be revealed using differential scanning calorimetry. 25 On the other hand, in the absence of the external magnetic field, TFAAA-7R precipitated in the form of rod-shaped crystals (Figure 2), and no drastic increase in viscosity was observed.…”

Section: Discussionmentioning

confidence: 97%

Triggering gel‐sol transition by weak magnetic field

et al. 2023

Self Cite

View full text Add to dashboard Cite

The self‐assembly of small and always chiral molecules into fiber‐like structures is a mysterious process, as the physics underlying such self‐assembly is unclear. The energy necessary for this process exceeds the one provided by common dispersion interactions and hydrogen bonding. The recent results obtained by the scientific group of Prof. Naaman from the Weizmann Institute of Science fed light on the nature of forces providing for the self‐assembly of chiral molecules and attributed these forces to spin‐exchange interactions. Therefore, the self‐assembly of chiral molecules should be magneto‐sensitive. We found such sensitivity in solutions of trifluoroacetylated ‐amino alcohols, and the process was inhibited by the magnetic field when fibers grew on the surface of the substrate. On the contrary, in bulk, the self‐assembly was enhanced by the magnetic field and led to the formation of a dense gel, while no gelation was observed in the absence of the external magnetic field. The latter observations are the theme of this short report, aimed to declare the effect itself but not pretend to describe it in full.

show abstract

Section: Discussionmentioning

confidence: 97%

Triggering gel‐sol transition by weak magnetic field

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, in the TFAAA-7R/glycerol system, the magnetic field 3/7 induced gelation due to the self-ordering of TFAAA molecules and the formation of quasi-one-dimensional supramolecular strings. 12,25 Since TFAAA-7R and glycerol molecules are non-magnetic, the revealed magnetosensitivity and the chirality of TFAAA-7R (obligate for the strings' growth 12 ) indicate a significant role of the exchange interactions 21,22 in the phenomenon under consideration. Since the interaction with an external magnetic field removes the symmetry restriction on the singlet-triplet conversions, the magnetic field would definitely affect the exchange interactions between TFAAA molecules.…”

Section: Discussionmentioning

confidence: 99%

Triggering Gel-Sol Transition by Weak Magnetic Field

Стовбун

Zanin

Скоблин

et al. 2023

Preprint

View full text Add to dashboard Cite

The self-assembly of small molecules into fiber-like structures is a mysterious process as the physics underlying such self-assembly is not clear. The energy necessary for this process exceeds the one provided by common dispersion interactions and hydrogen bonding. The recent results obtained by the scientific group of Prof. Naaman for the Weizmann Institute of Science fed light on the nature of the forces providing for the self-assembly of chiral molecules and attributed these forces to the spin exchange interactions. Therefore, the self-assembly of chiral molecules should be magneto-sensitive. We found such sensitivity in solutions of trifluoroacetylated alpha-aminoalcohols, and the process was inhibited by the magnetic field when fibers grew on the surface of the substrate. On the contrary, in the bulk, the self-assembly was enhanced by the magnetic field and led to the formation of the dense gel, while no gelation was observed in the absence of the external magnetic field. The latter observations are the theme of this short report aimed to declare the effect itself but does not pretend to describe it in full.

show abstract

Determination of four residual solvents in cefepime by headspace gas chromatography

Wang

2024

Results in Chemistry

View full text Add to dashboard Cite

A gel lattice alters the phase state of a solvent

Abstract: Some low-molecular-weight substances are able to self-assemble into the fiber-like structures (strings) to form gels. One of the examples of such substances is trifluoroacetylated a-aminoalcohols (TFAAAs) able of gelation of...

Cited by 4 publications

References 41 publications

Triggering gel‐sol transition by weak magnetic field

Triggering gel‐sol transition by weak magnetic field

Triggering Gel-Sol Transition by Weak Magnetic Field

Determination of four residual solvents in cefepime by headspace gas chromatography

Contact Info

Product

Resources

About