Premium
Synthesis, Characterization and Investigation of Different Properties of Three Novel Thiourea‐Based Non‐ionic Surfactants
Author(s) -
Ullah Imdad,
Shah Afzal,
Badshah Amin,
Rana Usman Ali,
Shakir Imran,
Khan Asad Muhammad,
Khan Shahan Zeb
Publication year - 2014
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-014-1575-4
Subject(s) - chemistry , thiourea , solubility , potassium thiocyanate , critical micelle concentration , thiocyanate , micelle , ionic bonding , inorganic chemistry , organic chemistry , nuclear chemistry , aqueous solution , ion
Three novel thiourea‐based non‐ionic surfactants, 3‐decanoyl‐1,1‐diphenylthiourea, 3‐dodecanoyl‐1,1‐diphenylthiourea and 1,1‐diphenyl‐3‐tetradecanoylthiourea were synthesized from carbonyl chlorides, potassium thiocyanate and amines in high yield. The synthesized compounds were characterized by different techniques like 1 H NMR, 13 C NMR, FTIR and UV‐Visible spectrophotometry. These surfactants are soluble in nonpolar and polar organic solvents and resist solubility in water due to the presence of thiourea group. Electronic absorption spectroscopy was used to evaluate their critical micelle concentration (CMC) in different solvents. The CMC was found to decrease with increase in hydrophobic carbon chain length as expected. Moreover, the effect of pH on their spectral transition was investigated and the two peaks were found to merge in highly alkaline conditions.