The formation of a noncovalent self-assembly of melamine and cyanuric
acid is probed by the hyper-Rayleigh scattering technique. It is shown
that the intensity of the scattered second harmonic light in solution
increases significantly as the 1:1 complex of melamine and cyanuric a
cid is formed. Both the formation and destabilization of the hydrogen-
bonded complex between these two molecules can easily be monitored by
this technique. (C) 1997 Elsevier Science B.V.