Selective synthesis of non-symmetrical bis-ureas and their self-assembly
作者:Olivier Colombani、Laurent Bouteiller
DOI:10.1039/b316913h
日期:——
function of 2,4-toluene diisocyanate. Then, non-symmetrical bis-ureas, tetra-ureas, and bis-urea functional polydimethylsiloxanes (PDMS) were obtained by reacting the mono-isocyanate/mono-ureas with well chosen amines. The chloroform solutions of these compounds were characterised by quantitative FTIR spectroscopy and viscosimetry. It was shown that non-symmetrical bis-ureas substituted on one side by an