A multi‐stimuli‐responsive fluorescence material based on 1,8‐naphthalimide
A pair of 1,8-naphthalimides (NPIs) were designed and successfully synthesized through embellishing amino-containing NPI with 4-diethylaminosalicyladehyde and 4-diethylaminobenzaldehyde, respectively. Their structures were fully confirmed by <sup>1</sup>H/<sup>13</sup>C NMR, HR-MS and FT-IR spectroscopic studies. Their photophysical properties were systematically investigated in different solvents of varied polarity, in THF/water mixtures with varying water fractions (f<sub>w</sub>), and in THF solvent with varying concentrations of NPIs. It inferred that the distinct differences in emission between two NPIs during self-assembled process could be ascribed that the hydroxyl-containing NPI allowed the excited-state intramolecular proton transfer process between -OH and CH=N units in the aggregation state. Interestingly, the solid of 4-diethylaminosalicyladehyde-functionalized NPI exhibited multi-stimuli-responsive fluorescence changes involving mechanofluorochromism and HCl/NH<sub>3</sub> vapor stimulus-induced conversion. However, no remarkable change was observed in the photoluminescence (PL) spectra for the solid of 4-diethylaminobenzaldehyde-functionalized NPI under the stimuli of mechanical force and organic solvent.
Authors
- Xiazhong Zhang
- Mingguang Zhu (ORCID: https://orcid.org/0000-0002-5746-3132)
- Yuanbin Wu (ORCID: https://orcid.org/0000-0002-4665-6350)
- Meihui Chen
- Donghong Xie
- Yi Li (ORCID: https://orcid.org/0000-0003-2236-895X)
- Haixia Tian
- Yuping Zhu
Institutions
- Neijiang Normal University (CN)
Publication Details
- Journal
- Luminescence
- Published
- 2024-08-01
- DOI
- https://doi.org/10.1002/bio.4868
- Citations
- 6
- Primary Topic
- Luminescence and Fluorescent Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.70
Funders
- Neijiang Normal University