f-functional branch point

Branch point from which f linear chains emanate.
  1. Examples are three-, four- and five-functional, branch points.
  2. Alternatively, the terms trifunctional, tetrafunctional, pentafunctional, etc. may be used.
See also: functionality
PAC, 2007, 79, 1801 (Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)) on page 1818