Devni Y. Kanakarathna
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Devni Y. Kanakarathna has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Brian Corbin
Department of Chemistry, The University of Akron, Akron, OH 44325, USA
1 shared publication - Chathura Shalitha Abeywickrama
Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
1 shared publication - Kaveesha J. Wijesinghe
Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka
1 shared publication - Nirasha I. Wickramasinghe
Department of Chemistry, Faculty of Science, University of Colombo, Colombo 00300, Sri Lanka
1 shared publication - Yi Pang
Department of Chemistry, The University of Akron, Akron, OH 44325, USA
1 shared publication
Latest Publications
- Open Access
- 9 August 2023
- Published by MDPI AG in Biosensors
- Vol. 13 (8) , 799
Bright NIR-Emitting Styryl Pyridinium Dyes with Large Stokes’ Shift for Sensing Applications
Two NIR-emitting donor-π-acceptor (D-π-A) type regioisomeric styryl pyridinium dyes (1a–1b) were synthesized and studied for their photophysical performance and environment sensitivity. The two regioisomers, 1a and 1b, exhibited interesting photophysical properties including, longer wavelength excitation (λex ≈ 530–560 nm), bright near-infrared emission (λem ≈ 690–720 nm), high-fluorescence quantum yields (ϕfl ≈ 0.24–0.72) large Stokes’ shift (∆λ ≈ 150–240 nm) and high-environmental sensitivity. Probe’s photophysical properties were studied in different environmental conditions such as polarity, viscosity, temperature, and concentration. Probes (1a–1b) exhibited noticeable changes in absorbance, emission and Stokes’ shift while responding to the changes in physical environment. Probe 1b exhibited a significant bathochromic shift in optical spectra (∆λ ≈ 20–40 nm) compared to its isomer 1a, due to the regio-effect. Probes (1a–1b) exhibited an excellent ability to visualize bacteria (Bacillus megaterium, Escherichia coli), and yeast (Saccharomyces cerevisiae) via fluorescence microscopy.
- 9 August 2023
- Published by MDPI AG in Biosensors
- Vol. 13 (8) , 799
Open AccessBright NIR-Emitting Styryl Pyridinium Dyes with Large Stokes’ Shift for Sensing Applications
Two NIR-emitting donor-π-acceptor (D-π-A) type regioisomeric styryl pyridinium dyes (1a–1b) were synthesized and studied for their photophysical performance and environment sensitivity. The two regioisomers, 1a and 1b, exhibited interesting photophysical properties including, longer wavelength excitation (λex ≈ 530–560 nm), bright near-infrared emission (λem ≈ 690–720 nm), high-fluorescence quantum yields (ϕfl ≈ 0.24–0.72) large Stokes’ shift (∆λ ≈ 150–240 nm) and high-environmental sensitivity. Probe’s photophysical properties were studied in different environmental conditions such as polarity, viscosity, temperature, and concentration. Probes (1a–1b) exhibited noticeable changes in absorbance, emission and Stokes’ shift while responding to the changes in physical environment. Probe 1b exhibited a significant bathochromic shift in optical spectra (∆λ ≈ 20–40 nm) compared to its isomer 1a, due to the regio-effect. Probes (1a–1b) exhibited an excellent ability to visualize bacteria (Bacillus megaterium, Escherichia coli), and yeast (Saccharomyces cerevisiae) via fluorescence microscopy.