Journal of Colloid and Interface Science, Vol.244, No.1, 145-153, 2001
Absorption and emission characteristics of 7-hydroxycoumarin and 1-hydroxypyrene-3,6,8-trisulfonate in water/oil microemulsion with reference to the determination of the interfacial and bulk pH of the water pool
The absorption and emission characteristics of 7-hydroxycoumarin (HCM) and 1-hydroxypyrene-3,6,8-trisulfonate (HPTS) have been studied in the water/oil microemulsion systems formed with AOT, BuOH, heptane, and decane as components. The absorption and emission features of HCM and HPTS have been correlated with the pH of buffer solutions to ascertain the pH of the oil/water interface and the interior of the water pool.
Keywords:7-hydroxycoumarin;1-hydroxypyrene-3,6,8-trisulfonate;absorption;emission;AOT;microemulsion;pool pH