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Updated: Sep 26, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
Synthesis of twist-twist pi-conjugated di-sec-alkylstilbenes and stilbene polymers
James E Gano1, D J Osborn, Nagendra Kodali
1Department of Chemistry, Bowman-Oddy Laboratories, University of Toledo, Toledo, Ohio 43606, USA. jgano@frii.com
Abstract:
Twist-twist pi-conjugated (TTPC) pi systems promise unique properties with their 90 degrees twist angles. Di-sec-alkyl substituted stilbenes, 5, were prepared by low-valent titanium coupling of phenyl ketones, 4. Long alkyl chains stopped the coupling reaction. Stilbenes 5 were shown to be approximately 90% TTPC. Inserting TTPC units into poly(p-phenylene) polymers created highly fluorescent, soluble, TTPC pi systems with weak electronic segmentation for organic light emitting diode (OLED) studies.
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