Title | perpendicular organization of macromolecules: synthesis and alignment studies of a soluble poly(iptycene). |
Publication Type | Journal Article |
Year of Publication | 2005 |
Authors | Thomas, SW, Long, TM, Pate, BD, Kline, SR, Thomas, EL, Swager, TM |
Journal | Journal of the American Chemical Society |
Volume | 127 |
Pagination | 17976–7 |
Date Published | dec |
ISSN | 0002-7863 |
Keywords | perpendicular organization macromol alignment soluble polyiptycene |
Abstract | We describe herein a polymeric material that prefers to align perpendicular to a stretch-aligned polymer host in the solid state. Poly(iptycene) poly-1 was synthesized from monomer 1 under hyperbaric techniques via a Diels-Alder polymerization. Polarized excitation spectra of the anthracene end groups in this material in a stretch-aligned, solution-cast poly(vinyl chloride) (PVC) film showed that the poly(iptycene) prefers to align normal (counter aspect ratio) to the stretching direction of the PVC. This is explained by a \"threading\" mechanism, whereby the PVC intercalates through the internal free volume presented by poly-1, similar to effects observed in small molecule iptycenes under similar conditions. |
URL | http://www.ncbi.nlm.nih.gov/pubmed/16366528 |
DOI | 10.1021/ja056241u |