title: Introduction: Expanded, Contracted, and Isomeric Porphyrins.
authors.affiliation: University of Texas at Austin.
authors.forename: Jonathan L
authors.identifier: 0000-0002-9576-1325
authors.initials: JL
authors.lastname: Sessler
authors.affiliation: Technion.
authors.forename: Zeev
authors.identifier: 0000-0003-1170-2115
authors.initials: Z
authors.lastname: Gross
authors.affiliation: Kyushu University.
authors.forename: Hiroyuki
authors.identifier: 0000-0002-3881-8807
authors.initials: H
authors.lastname: Furuta