Enhanced mechano-responsive fluorescence in polydiacetylene thin films through functionalization with tetrazine dyes

Abstract

The development of mechano-responsive fluorescent materials is essential for the design and construction of reliable and versatile sensors for mechanical stress. Herein, novel energy transfer-based systems with tetrazine fluorophore and a polydiacetylene (PDA) backbone are synthesized and studied comparatively to a simple polydiacetylene in the form of thin films. Their photopolymerization properties, energy transfer efficiencies and fluorescent response to nanoscale mechanical stimulation are assessed. It is pointed out that the self-assembling group on the PDA chain influences the geometrical arrangement of the chains and the film morphology and, as a consequence, the efficiency and kinetics of polymerization and the energy transfer efficiency. Moreover, we show that the strategy of introducing tetrazine fluorophore provides a new effective route of improving force detectability by fluorescence using polydiacetylenes as mechano-responsive units.

Article information

Article type
Paper
Submitted
28 Jul 2021
Accepted
12 Oct 2021
First published
12 Oct 2021

Phys. Chem. Chem. Phys., 2021, Accepted Manuscript

Enhanced mechano-responsive fluorescence in polydiacetylene thin films through functionalization with tetrazine dyes

L. Polacchi, A. Brosseau, R. Guillot, R. Métivier and C. Allain, Phys. Chem. Chem. Phys., 2021, Accepted Manuscript , DOI: 10.1039/D1CP03458H

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