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- W4225339253 abstract "Radiation brightening was recently observed in a multifluorophore-conjugated brome mosaic virus (BMV) particle at room temperature under pulsed excitation. On the basis of its nonlinear dependence on the number of chromophores, the origins of the phenomenon were attributed to a collective relaxation. However, the mechanism remains unknown. We present ultrafast transient absorption and fluorescence spectroscopic studies which shed new light on the collective nature of the relaxation dynamics in such radiation-brightened, multifluorophore particles. Our findings indicate that the emission dynamics is consistent with a superradiance mechanism. The ratio between the rates of competing radiative and nonradiative relaxation pathways depends on the number of chromophores per virus. The findings suggest that small icosahedral virus shells provide a unique biological scaffold for developing nonclassical, deep subwavelength light sources and may open new avenues for the development of photonic probes for medical imaging applications." @default.
- W4225339253 created "2022-05-05" @default.
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- W4225339253 date "2022-04-05" @default.
- W4225339253 modified "2023-10-14" @default.
- W4225339253 title "Ultrafast Collective Excited-State Dynamics of a Virus-Supported Fluorophore Antenna" @default.
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- W4225339253 doi "https://doi.org/10.1021/acs.jpclett.2c00262" @default.
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