Jump to main content
Jump to site search

Issue 2, 2020
Previous Article Next Article

Mechanofluorochromism of pyrene-derived amidophosphonates

Author affiliations


Aiming to develop a library of organic mechanofluorochromic (MFC) materials, solid-state emission properties of pyrene-derivatives with amidophosphonate groups (diethyl 1-(pyrene-1-carboxamido)alkylphosphonates, alkyl: methyl, isopropyl, phenyl) were investigated. All of these compounds were found to show strong blue fluorescence, and blue-to-green emission shift was identified upon grinding. Monomer and several excimer emissive species were identified by steady-state and time-resolved fluorescence investigations. The characteristic green-to-blue thermal back reaction was observed even at room temperature without additives, which would be related to the flexibility of side groups for molecular rearrangement. We here demonstrated that the pyrene-derived compounds can be attractive platforms to host MFC properties.

Graphical abstract: Mechanofluorochromism of pyrene-derived amidophosphonates

Back to tab navigation

Supplementary files

Article information

21 Nov 2019
15 Jan 2020
First published
21 Jan 2020

Photochem. Photobiol. Sci., 2020,19, 229-234
Article type

Mechanofluorochromism of pyrene-derived amidophosphonates

Y. Hirai, A. Wrona-Piotrowicz, J. Zakrzewski, A. Brosseau, R. Guillot, R. Métivier and C. Allain, Photochem. Photobiol. Sci., 2020, 19, 229
DOI: 10.1039/C9PP00457B

Social activity

Search articles by author