Ammonia and temperature sensing applications using fluorometric and colorimetric microparticles and polymeric films doped with BODIPY-emitters
Journal article
Bertolo, E., Beatriz S. Cugnasca, Frederico Duarte, Hugo M. Santos, José Luis Capelo-Martínez, Alcindo A. Dos Santos and Carlos Lodeiro 2024. Ammonia and temperature sensing applications using fluorometric and colorimetric microparticles and polymeric films doped with BODIPY-emitters. Microchimica Acta. 191 (746), pp. 1-18. https://doi.org/10.1007/s00604-024-06814-2
Authors | Bertolo, E., Beatriz S. Cugnasca, Frederico Duarte, Hugo M. Santos, José Luis Capelo-Martínez, Alcindo A. Dos Santos and Carlos Lodeiro |
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Abstract | Four functionalized BODIPY derivatives (BDP1 to BDP4) were synthesized and their optical properties investigated both in solution and when incorporated into a solid matrix. Recognizing the versatility of BODIPY derivatives and the increasing interest in developing new luminescent organic dyes embedded in polymers, the BODIPY derivatives were dispersed into two types of polymeric matrices: Poly(methyl methacrylate) (PMMA) and Thermoplastic Polyurethane (TPU), both as films and microparticles. This resulted in eight new BODIPY-doped polymer films and eight types of BODIPY-doped polymeric microparticles for use in aqueous solutions. The integration of the BODIPY dyes into the polymeric matrices combines the unique properties of the polymer films, such as porosity, flexibility, and elasticity, with the excellent photophysical characteristics of the BODIPYs. Importantly, the dispersion minimized issues such as aggregation-caused quenching commonly observed in solid-state luminescent materials. The thermometric responses of all polymer films were evaluated by studying their solid-state emission spectra in the 25–200 °C temperature range. The reversibility of these temperature-induced changes was also assessed, revealing excellent recovery of luminescence. These promising results suggest these materials could have applications as fluorescent thermometric sensors. Furthermore, we explored the potential of the brominated (BDP3) and chalcogenated (BDP4) BODIPY derivatives as ammonia sensors. The two derivatives produced yellow fluorescent products upon interaction with the analyte. Kinetic studies using solid-state emission spectra of BDP4@TPU and BDP4@PMMA showed significant differences in reaction rates (minutes for BDP4@TPU and hours in the case of BDP4@PMMA) attributable to the higher permeability of TPU when compared with PMMA. Detection and quantification of ammonia concentration were conducted by means of simple photographic analysis, measuring the “R” (red) and “G” (green) components of RGB color parameters. The results from the photographic method correlated well with the results from fluorimetric spectroscopy studies. The photographic analysis is straightforward, portable, and does not require expensive equipment. Finally, we successfully applied polymeric microparticles doped with BODIPYs to detect ammonia in water, demonstrating their effectiveness without the need for organic solvents. This highlights their potential for environmental monitoring and other applications requiring sensitive and selective detection methods. |
Keywords | BODIPY; Fluorescence probe ; Ploymer films; PMMA; TPU; Sensor; Ammonia |
Year | 2024 |
Journal | Microchimica Acta |
Journal citation | 191 (746), pp. 1-18 |
Publisher | Springer Nature |
ISSN | 1436-5073 |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00604-024-06814-2 |
Official URL | https://link.springer.com/article/10.1007/s00604-024-06814-2 |
Publication dates | |
Online | 17 Nov 2024 |
Publication process dates | |
Accepted | 28 Oct 2024 |
Deposited | 20 Nov 2024 |
Accepted author manuscript | License File Access Level Open |
Supplemental file | License File Access Level Open |
Output status | Published |
https://repository.canterbury.ac.uk/item/99q1q/ammonia-and-temperature-sensing-applications-using-fluorometric-and-colorimetric-microparticles-and-polymeric-films-doped-with-bodipy-emitters
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Accepted author manuscript
Ms Cugnasca et al 2024_MicroCA Revised_final2.pdf | ||
License: CC BY-NC-ND | ||
File access level: Open |
Supplemental file
Supplementary Material_artigo polimeros_reactive and fucntional polymers_revised_finaldocx.pdf | ||
License: CC BY-NC-ND | ||
File access level: Open |
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