1.Humboldt Centre for Nano- and Biophotonics, Institute for Light and Matter, Department of Chemistry and Biochemistry, University of Cologne, Cologne, Germany
2.Centre of Biophotonics, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, UK
3.School of Psychology and Neuroscience, University of St Andrews, St Mary's Quad, St Andrews, UK
4.Institute for Light and Matter, Department of Chemistry and Biochemistry, University of Cologne, Cologne, Germany
5.Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Disease (CECAD), University of Cologne, Cologne, Germany
Chang-Ki Moon (changki.moon@uni-koeln.de)
Malte C. Gather (malte.gather@uni-koeln.de)
收稿:2025-07-21,
修回:2025-11-18,
录用:2025-11-18,
网络首发:2026-02-05,
纸质出版:2026-04-30
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Chang-Ki Moon, Matthias König, Ranjini Sircar, 等. High-power pulsed electrochemiluminescence for optogenetic manipulation of
Moon, C. K. et al. High-power pulsed electrochemiluminescence for optogenetic manipulation of Drosophila larval behaviour. Light: Science & Applications, 15, 1194-1204 (2026).
Chang-Ki Moon, Matthias König, Ranjini Sircar, 等. High-power pulsed electrochemiluminescence for optogenetic manipulation of
Moon, C. K. et al. High-power pulsed electrochemiluminescence for optogenetic manipulation of Drosophila larval behaviour. Light: Science & Applications, 15, 1194-1204 (2026). DOI: 10.1038/s41377-025-02143-y.
Electrochemiluminescence (ECL) produces light through electrochemical reactions and has shown promise for various analytic applications in biomedicine. However
the use of ECL devices (ECLDs) as light sources has been limited due to insufficient light output and low operational stability. In this study
we present a high-power pulsed operation strategy for ECLDs to address these limitations and demonstrate their effectiveness in optogenetic manipulation. By applying a biphasic voltage sequence with short opposing phases
we achieve intense and efficient ECL through an exciplex-formation reaction pathway. This approach results in an exceptionally high optical power density
exceeding 100 μW mm
−
2
for several thousand pulses. Balancing the ion concentration by optimizing the voltage waveform further improves device stability. By incorporating multiple optimized pulses into a pulse train separated by short rest periods
extended light pulses of high brightness and with minimal power loss over time were obtained. These strategies were leveraged to elicit a robust optogenetic response in fruit fly (
Drosophila melanogaster
) larvae expressing the optogenetic effector CsChrimson. The semi-transparent nature of ECLDs facilitates simultaneous imaging of larval behaviour from underneath
through the device. These findings highlight the potential of ECLDs as versatile optical tools in biomedical and neurophotonics research.
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