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Updated: May 10, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Excited state structural changes of 10-cyano-9-tert-butyl-anthracene (CTBA) in polymer matrices
Yaser A Yousef1, Khader A Al-Hassan, Wissam F Helal
1Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, Jordan.
Abstract:
Two main deactivation processes are suggested to be present in the electronic excited state of 10-cayano-9-tert-butyl-anthracene (CTBA): one leading to the Dewar strucure resulted from photochemical effect, similar to the case of 9-tert-butyl-anthracene (TBA), which is enhanced in solution, and another leads to a more planar structure leading to a Charge Transfer (CT) state and is enhanced in polymers. The presence of donor (tert-butyl group) and an acceptor (cyano group) along the line of 9,10 positions in CTBA confirm our hypothesis of CT state. Our suggestions were supported by steady state and time resolved fluorescence spectra results.
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