Solvation dynamics in organized assemblies, 4-aminophthalimide in micelles

Influence of Hydrogen Bonds and Nonspecific Interactions on the Spectral and Photophysical Properties of the Excited Singlet States of 4‐Aminophthalimide in Amine Solution

“…The 4-aminophthalimide molecule (4-AP, Figures 1 and 2) and its N-methyl derivative (NM-4-AP) have been widely used as fluorescence probes in investigations of the properties of many complex systems such as mixtures of solvents, [1] micelles, [2][3][4] cyclodextrines, [5] ionic liquids [6,7] and others. [8][9][10][11] The usefulness of 4-AP and NM-4-AP as probes is related to the strong dependence of their fluorescence maxima (n F max ), their quantum yields of fluorescence (f F ) and their fluorescence decay times (t F ) on the properties of their environment.…”

Spectrophotometric study of interaction and solubilization of procaine hydrochloride in micellar systems

“…So far phospholipids bilayer membranes are often used to probe the mechanism of anesthetic action [18][19][20][21]. Few studies have been reported regarding the interaction between micelles and local anesthetics and there are no reports regrarding the interaction of anionic and cationic surfactants micelles with procaine [22][23][24][25][26][27]. In this work, the effect of micelles of sodium dodecyl sulfate, cetyltrimethylammonium bromide and Triton X-100 ( Fig.…”

Different sources of 4-aminophthalimide solvation dynamics retardation inside micellar systems

“…These bound molecules are responsible for the appearance of time components in the water relaxation in microorganized systems being 10-1000 times longer than those in the bulk water. On the basis of this above explanation, Bhattacharyya and co-workers [6] assumed that a significant slowing down of the dynamics of solvation of 4-aminophthalimide (4-AP) in the micelles of sodium dodecyl sulfate (M-SDS), cetyltrimethylammonium bromide (M-CTAB), and Triton X-100 (M-TX-100) was related to a slowing down in the dynamics of translation and rotation of water molecules bound to the surfactant molecules through sufficiently strong interactions.…”

“…Particularly interesting are the properties of water molecules placed in micelles, because they are assumed to be close to those of water in biological systems [3,4]. In a number of works on the dynamics of solvation in micellar systems [3][4][5][6][7][8][9] it has been shown that the process of solvation related to the interactions of the excited probe molecule with water molecules is much slower in micelles than in bulk water. An attempt at explanation of this fact was undertaken by Bagchi and co-workers [3,4,[10][11][12], who suggested that some water molecules in micro-organized systems are strongly bound to the molecules composing this system (in the case of micelles, to the surfactant molecules).…”