Flory convention

In polymer science, the Flory convention is a convention for labelling rotational isomers of polymers. It is named after nobel prize-winning Paul Flory.[1][2]

The convention states that for a given bond, when the dihedral angle formed between the previous and subsequent bonds projected on the plane normal to the bond is 0 degrees, the state is labelled as "trans", and when the angle is 180 degrees, the angle is labelled as "cis".

  1. ^ Flory PJ (1941). "Molecular Size Distribution in Three-Dimensional Polymers: I, Gelation". J. Am. Chem. Soc. 63 (11): 3083. doi:10.1021/ja01856a061.
  2. ^ Morris PJT (1986). "Polymer Pioneers: A Popular History of the Science and Technology of Large Molecules". Center for History of Chemistry, Philadelphia.