Interaction between gastric enzyme pepsin and tetradecyltrimethylammonium bromide in presence of sodium electrolytes: Exploration of micellization behavior.

Pepsin is a proteolytic enzyme used in the treatment of digestive disorders. In this study, we investigated the physicochemical properties of the tetradecyltrimethylammonium bromide (TTAB) and pepsin protein mixture in various sodium salt media within a temperature range of 300.55-320.

Physicochemical parameters and modes of interaction associated with the micelle formation of a mixture of tetradecyltrimethylammonium bromide and cefixime trihydrate: effects of hydrotropes and temperature.

The interaction between an antibiotic drug (cefixime trihydrate (CMT)) and a cationic surfactant (tetradecyltrimethylammonium bromide (TTAB)) was examined in the presence of both ionic and non-ionic hydrotropes (HTs) over the temperature range of 300.55 to 320.55 K.

Aggregation phenomena and physico-chemical properties of tetradecyltrimethylammonium bromide and protein (bovine serum albumin) mixture: Influence of electrolytes and temperature.

It is important for biological, pharmaceutical, and cosmetic industries to understand how proteins and surfactants interact. Herein, the interaction of bovine serum albumin (BSA) with tetradecyltrimethylammonium bromide (TTAB) in different inorganic salts (KCl, KSO, KPO.HO) has been explored through the conductivity measurement method at different temperatures (300.

Investigation of the impacts of simple electrolytes and hydrotrope on the interaction of ceftriaxone sodium with cetylpyridinium chloride at numerous study temperatures.

Herein, interactions between cetylpyridinium chloride (CPC) and ceftriaxone sodium (CTS) were investigated applying conductivity technique. Impacts of the nature of additives (e.g.

Influences of NaCl and NaSO on the Micellization Behavior of the Mixture of Cetylpyridinium Chloride + Polyvinyl Pyrrolidone at Several Temperatures.

Herein, the conductivity measurement technique is used to determine the interactions that may occur between polyvinyl pyrrolidone (PVP) polymer and cetylpyridinium chloride (CPC) surfactant in the presence of NaCl and NaSO of fixed concentration at variable temperatures (298.15-323.15 K) with an interval of 5 K.

A new synthetic route for the preparation of [Os(CO)(μ-OH)(μ-H)] and its reaction with bis(diphenylphosphino)methane (dppm): syntheses and X-ray structures of two isomers of [Os(CO)(μ-OH)(μ-H)(μ-dppm)] and [Os(CO)(μ-CO)(μ-O)(μ-dppm)].

The triosmium cluster [Os(CO)(μ-OH)(μ-H)] containing bridging hydride and hydroxyl groups at a common Os-Os edge was obtained in good yield ( 75%) from the hydrolysis of the labile triosmium cluster [Os(CO)(NCMe)] in THF at 67 °C. [Os(CO)(μ-OH)(μ-H)] reacts with dppm at 68 °C to afford the isomeric clusters 1 and 2 with the general formula [Os(CO)(μ-OH)(μ-H)(μ-dppm)] that differ by the disposition of bridging dppm ligand. Cluster 1 is produced exclusively from the reaction of [Os(CO)(μ-OH)(μ-H)] with dppm in CHCl at room temperature in the presence of added MeNO.

Reactions of triosmium and triruthenium clusters with 2-ethynylpyridine: new modes for alkyne C-C bond coupling and C-H bond activation.

The reaction of the trimetallic clusters [HOs(CO)] and [Ru(CO)L] (L = CO, MeCN) with 2-ethynylpyridine has been investigated. Treatment of [HOs(CO)] with excess 2-ethynylpyridine affords [HOs(CO)(μ-CHNCH=CH)] (1), [HOs(CO)(μ-CHNC[double bond, length as m-dash]CH)] (2), [HOs(CO)(μ-CHNC[double bond, length as m-dash]CCO)] (3), and [HOs(CO)(μ-CH[double bond, length as m-dash]CHCHN)] (4) formed through either the direct addition of the Os-H bond across the C[triple bond, length as m-dash]C bond or acetylenic C-H bond activation of the 2-ethynylpyridine substrate. In contrast, the dominant pathway for the reaction between [Ru(CO)] and 2-ethynylpyridine is C-C bond coupling of the alkyne moiety to furnish the triruthenium clusters [Ru(CO)(μ-CO){μ-CHNC[double bond, length as m-dash]CHC(CHN)[double bond, length as m-dash]CH}] (5) and [Ru(CO)(μ-CO){μ-CHNCCHC(CHN)CHCHC(CHN)}] (6).