  We consider a lattice model for amphiphiles in a solvent with molecules
chemically similar to one part of the amphiphilic molecule. The dependence of
the interaction potential on orientation of the amphiphilic molecules is taken
into account explicitly. The model is solved exactly in one dimension by the
transfer-matrix method. In particular, pressure as a function of concentration,
correlation function and specific heat are calculated. The model is compared
with the recently introduced lattice model for colloidal self-assembly, where
the particles interact with the isotropic short-range attraction and long-range
repulsion (SALR) potential. Similarities between the amphiphilic and the
colloidal self-assembly are highlighted.
