Disclosed herein are a gelling agent composed of a functional amino acid
compound having a tetrathiafulvalenyl group, and a production method of a
gelling agent, comprising reacting a tetrathiafulvalene derivative with
an amino acid derivative in the presence of
1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride and
4-(N,N-dimethylamino)pyridine to obtain a functional amino acid compound
having a tetrathiafulvalenyl group.