Binding of o-nitroaniline to nonaqueous AOT reverse micelles

Nonaqueous Polar Solvents in Reverse Micelle Systems

“…Although this may seem like a prerequisite for replacing water in reverse micelles, two solvents that do not donate hydrogen bonds stand out for their efficacy at forming reverse micelles, dimethyl formamide (DMF) and dimethyl acetamide (DMA). Several studies have demonstrated the utility for these solvents to form true reverse micelles with DMF ,,,,,,,, and DMA. ,,,, Despite the slight solubility of DMF in nonpolar solvents, Riter et al demonstrated the propensity for DMF to facilitate reverse micelle formation using DLS . They noted a critical dependence on the AOT concentration; that is, for reverse micelles to form requires a high AOT concentration.…”

“…Several studies have demonstrated the utility for these solvents to form true reverse micelles with DMF 113,142,144,150,153,158,176,177,181 and DMA. 142,144,150,153,182 Despite the slight solubility of DMF in nonpolar solvents, Riter et al demonstrated the propensity for DMF to facilitate reverse micelle formation using DLS. 113 They noted a critical dependence on the AOT concentration; that is, for reverse micelles to form requires a high AOT concentration.…”

“…Falcone et al also employed the solvatochromic behavior of ortho-nitroaniline (o-NA, Figure 17) evident from its absorption UV−visible spectroscopy to explore AOT nonaqueous reverse micelles. 182 They determined the binding of o-NA to the micelle interface, calculated through the changes in the UV spectra, for n-heptane/AOT/water, EG, FA, GY, DMA, and DMF reverse micelles. 182 They found the lowest binding constant, K b , for o-NA in reverse micelles encapsulating GY, and that K b increases for water-containing reverse micelles.…”

Photoisomerization and reorientational dynamics of DTDCI in AOT/alkane reverse micelles containing non-aqueous polar liquids

“…[1][2][3] In fact, a polar liquid immiscible with non-polar solvents can get encapsulated inside the RMs, the most common example being water. [1][2][3] In recent times, the scope of such encapsulation has widened dramatically to include polar liquids like glycerol (GY), [3][4][5][6][7] ethylene glycol (EG), [3][4][5][6][8][9][10][11] propanediol, 1,11 formamide (FA), [3][4][5][6]10,12 dimethylformamide (DMF), 3,5,6,11 dimethylacetamide, 3,5,6 methanol 10,[13][14][15][16][17][18] and acetonitrile. 10,[15][16][17][18] In these systems, the polar liquid remains dispersed as AOT-coated droplets in the non-polar solvent.…”

“…3 Thus, AOT reverse micelles and microemulsions open up exciting prospects for physico-chemical processes confined in a nano-dimensional droplet. Consequently, they have proved to be important in spectroscopy, 5,6,[11][12][13][14][15][16][17][18][20][21][22] catalysis, [22][23][24] biochemistry [23][24][25] and nanoparticle fabrication. [26][27][28] In particu- Department of Chemistry, University of Calcutta, 92, APC Road, Kolkata 700 009, India.…”