title: Incorporating an Alternating Donor-Acceptor Structure into a Ladder Polymer Backbone.
abstract: Incorporation of the donor-acceptor structure of an alternating conjugated copolymer into a rigid ladder polymer backbone is reported. The resulting ladder polymers show optical features typical of rigid ladder polymers, but present an increased Stokes shift if compared to their non-polar counterparts. This behavior reflects the occurrence of charge transfer processes during excitation and leads to a positive solvatochromism.
authors.affiliation: Makromolekulare Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany.
authors.forename: Kim-Julia
authors.initials: KJ
authors.lastname: Kass
authors.affiliation: Makromolekulare Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Forster
authors.affiliation: Makromolekulare Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany. scherf@uni-wuppertal.de.
authors.forename: Ullrich
authors.initials: U
authors.lastname: Scherf
keywords: copolymerization; donor-acceptor systems; ladder polymers; solvatochromism; solvent effects