P. Mach et al., DRAMATIC EFFECT OF SINGLE-ATOM REPLACEMENT ON THE SURFACE-TENSION OF LIQUID-CRYSTAL COMPOUNDS, Physical review letters, 80(4), 1998, pp. 732-735
High-resolution surface tension measurements have been conducted on fr
ee-standing films of a specially selected series of liquid-crystal com
pounds. We have discovered a dramatic change in the surface tension of
liquid-crystal compounds by replacing a single fluorine atom in the m
olecular tail with a hydrogen atom. The implication of this finding wi
ll be discussed. [S0031-9007(97)05062-X].