scholarly journals Bright blue-shifted fluorescent proteins with Cys in the GAF domain engineered from bacterial phytochromes: fluorescence mechanisms and excited-state dynamics

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Yusaku Hontani ◽  
Daria M. Shcherbakova ◽  
Mikhail Baloban ◽  
Jingyi Zhu ◽  
Vladislav V. Verkhusha ◽  
...  
Keyword(s):  
Excited State ◽  
Fluorescent Proteins ◽  
Excited State Dynamics ◽  
Bacterial Phytochromes ◽  
Bright Blue

scholarly journals Ultrafast excited-state dynamics and fluorescence deactivation of near-infrared fluorescent proteins engineered from bacteriophytochromes

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Jingyi Zhu ◽  
Daria M. Shcherbakova ◽  
Yusaku Hontani ◽  
Vladislav V. Verkhusha ◽  
John T. M. Kennis
Keyword(s):  
Excited State ◽  
Near Infrared ◽  
Fluorescent Proteins ◽  
Excited State Dynamics

Probing the excited state dynamics of Venus: origin of dual-emission in fluorescent proteins

2018 ◽  
Vol 207 ◽  
pp. 39-54 ◽  
Author(s):  
Shaina Dhamija ◽  
Bhisham Thakur ◽  
Purnananda Guptasarma ◽  
Arijit K. De
Keyword(s):  
Excited State ◽  
Fluorescent Protein ◽  
Fluorescent Proteins ◽  
Yellow Fluorescent Protein ◽  
Dual Emission ◽  
Protein Variant ◽  
Excited State Dynamics ◽  
Uv Excitation

We present studies on a yellow fluorescent protein variant, Venus, and investigate the photophysics behind the dual emission upon UV excitation in fluorescent proteins.

Excited-State Dynamics in the RNA Nucleotide Uridine 5’-Monophosphate Investigated by Femtosecond Broadband Transient Absorption Spectroscopy

2019 ◽  
Author(s):  
Matthew M. Brister ◽  
Carlos Crespo-Hernández
Keyword(s):  
Excited State ◽  
Excited States ◽  
Ground State ◽  
Transient Absorption ◽  
Electronic Energy ◽  
Transient Absorption Spectroscopy ◽  
Electronic Relaxation ◽  
Vibrationally Excited ◽  
Excited State Dynamics ◽  
Π State

<p></p><p> Damage to RNA from ultraviolet radiation induce chemical modifications to the nucleobases. Unraveling the excited states involved in these reactions is essential, but investigations aimed at understanding the electronic-energy relaxation pathways of the RNA nucleotide uridine 5’-monophosphate (UMP) have not received enough attention. In this Letter, the excited-state dynamics of UMP is investigated in aqueous solution. Excitation at 267 nm results in a trifurcation event that leads to the simultaneous population of the vibrationally-excited ground state, a longlived <sup>1</sup>n<sub>O</sub>π* state, and a receiver triplet state within 200 fs. The receiver state internally convert to the long-lived <sup>3</sup>ππ* state in an ultrafast time scale. The results elucidate the electronic relaxation pathways and clarify earlier transient absorption experiments performed for uracil derivatives in solution. This mechanistic information is important because long-lived nπ* and ππ* excited states of both singlet and triplet multiplicities are thought to lead to the formation of harmful photoproducts.</p><p></p>

Modulation of Excited State Dynamics in Lead Halide Perovskite Films with Electrical Bias

2019 ◽  
Author(s):  
Gergely Samu ◽  
R.A. Scheidt ◽  
A. Balog ◽  
C. Janáky ◽  
P.V. Kamat
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Halide Perovskite ◽  
Electrical Bias ◽  
Lead Halide
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