1541-67-9Relevant articles and documents
SYNTHESIS AND BACTERICIDAL ACTIVITY OF CATIONIC SURFACE-ACTIVE AGENTS CONTAINING AN ASYMMETRIC NITROGEN ATOM
Limanov, V. E.,Ivanov, S. B.,Kruchenok, T. B.,Tsvirova, I. M.
, p. 416 - 419 (1984)
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Ionic liquid crystals with novel thermal properties formed by the gemini surfactants containing four hydroxyl groups
Lei, Lan,Feng, Lin,Song, Binglei,Zhai, Zhaolan,Shang, Shibin,Song, Zhanqian
, p. 99361 - 99366 (2016)
Modification of the molecular structures of surfactants is a feasible way to construct ionic liquid crystals (ILCs) with novel properties. Five quaternary ammonium gemini surfactants with different spacers, whose head groups were substituted by four hydroxyethyl groups, abbreviated as 12(2OH)-s-12-(2OH) (s = 3, 4, 5, 6, 8), were prepared. The mesomorphic behaviors of these gemini surfactants were investigated by polarized optical microscopy (POM), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and temperature-dependent FT-IR spectroscopy. These surfactants form smectic A (SmA) phases, the region of which is dependent on the spacer length. The presence of suitable spacer length and multiple hydroxyl groups is helpful in stabilizing the mesophases. Noticeably, because of synergistic effect of the spacer and the hydroxyl groups, the phase enthalpy change of SmA to crystal transitions can be slowly released below the phase transition temperature. This interesting discovery, which has never been reported in ILC systems formed by small molecular weight surfactants, could pave the way for special applications of ILCs in the area of sustained-release materials of heat and could widen the application of ionic liquid crystals.
COMPOUNDS, COMPOSITONS AND METHODS RELATED TO ANTIMICROBIAL APPLICATIONS
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Page/Page column 95; 96-97, (2018/03/25)
The present disclosure is in the field of polymers and pharmaceuticals/antimicrobials. The disclosure provides compounds based on SNAP (synthetic novel antimicrobial polymer) technology, compositions and methods of managing microbial infections including surgical site infections (SSIs). The present compounds are used as a management/therapeutic strategy to target microbial infections and have advantages including excellent antimicrobial potency, biofilm disruption ability, broad spectrum activity against various organisms covering both gram negative and gram positive bacteria as well as fungal pathogens, and low toxicity profile to ensure a healthy therapeutic window for use in humans.
A cation containing plural hydroxyl groups, of Gemini surfactant method for preparing ionic liquid crystal and (by machine translation)
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Paragraph 0006; 0012, (2016/10/07)
The invention relates to a method for preparing ionic liquid crystal cationic Gemini surfactant, its structural formula is as follows: The surface active agent is characterized in that in its molecular structure containing 5 hydroxy, the surface active agent can be in the 110 °C the above forming ion liquid crystal. The shape of the liquid crystal of the smectic A (SmA) phase. The presence of the hydroxyl groups can weaken the active agent ions and the counterion between the surface of the electrostatic interaction, is conducive to the formation of the liquid crystalline phase. Ion liquid crystal combines the characteristics of ionic liquid and of the liquid crystal, as well as the ion conductive material, such as organic reaction medium with superior performance. The invention is beneficial to promote the surface active agent in the preparation of ion liquid crystal application. (by machine translation)
