OTPh (1 mg) was added to 50.0 mL of a NaDC solution. This solution was sonicated for 10 min (Branson 1510 water bath sonicator) and was kept at rest for two weeks to allow for the complete solubilization of the oligomer. Clear solutions were obtained with an OTPh concentration of 0.02 mg mL -1 and NaDC concentrations of 50 or 100 mM. These solutions were diluted with NaDC solutions to obtain lower OTPh concentrations. The same procedure was followed for the control experiments where the solubilization of OTPh in water was attempted in the absence of NaDC.