Paper Title:

Tristriazolotriazines with π-Conjugated Segments: Star-Shaped Fluorophors and Discotic Liquid Crystals

Periodical Advances in Science and Technology (Volume 77)
Main Theme Adaptive, Active and Multifunctional Smart Materials Systems
Chapter Chapter 3: Luminescent and Chromogenic Materials Systems
Edited by Pietro Vincenzini, Yoon-Bong Hahn, Salvatore Iannotta, Andreas Lendlein, Vincenzo Palermo, Shashi Paul, Concita Sibilia, S. Ravi P. Silva and Gopalan Srinivasan
Pages 118-123
DOI 10.4028/www.scientific.net/AST.77.118
Citation Stefan Glang et al., 2012, Advances in Science and Technology, 77, 118
Online since September 2012
Authors Stefan Glang, Dorothee Borchmann, Thorsten Rieth, Heiner Detert
Keywords Discotic Liquid Crystals, Fluorescence, Heterocycles, Mesophases, Solvatochromism
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C3-symmetrical tristriazolotriazines substituted with phenylene rings carrying lateral flexible alkoxy side chains were prepared via condensation/ring transformation of cyanuric chloride and tetrazoles. These star-shaped, planar compounds can form broad thermotropic mesophases. Due to the extensive π-conjugation, these compounds are highly emissive and the octupolar donor-acceptor electronic structure results in non-linear optical properties like solvatochromism. Brønstedt acids provoke halochromism of the absorption and of the fluorescence.