Photoresponsive sulfone-based molecules: photoinduced electron transfer and heat/air-stable radicals in the solid state

2019 ◽  
Vol 43 (11) ◽  
pp. 4506-4510 ◽  
Author(s):  
Ning-Ning Zhang ◽  
Ming-Sheng Wang ◽  
Guo-Cong Guo
Keyword(s):  
Electron Transfer ◽  
Solid State ◽  
Photoinduced Electron Transfer ◽  
Stable Radicals ◽  
First Time

Photoinduced electron transfer (PET) of two sulfone-based molecules with the formation of stable radicals was observed for the first time in the solid state.

scholarly journals Photoinduced 1,2,3,4-tetrahydropyridine ring conversions

2015 ◽  
Vol 11 ◽  
pp. 2166-2170
Author(s):  
Baiba Turovska ◽  
Henning Lund ◽  
Viesturs Lūsis ◽  
Anna Lielpētere ◽  
Edvards Liepiņš ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solid State ◽  
Light Intensity ◽  
Photoinduced Electron Transfer ◽  
Driving Force ◽  
Spectroscopic Data

Stable heterocyclic hydroperoxide can be easily prepared as a product of fast oxidation of a 1,2,3,4-tetrahydropyridine by 3O2 if the solution is exposed to sunlight. The driving force for the photoinduced electron transfer is calculated from electrochemical and spectroscopic data. The outcome of the reaction depends on the light intensity and the concentration of O2. In the solid state the heterocyclic hydroperoxide is stable; in solution it is involved in further reactions.

Photoinduced electron transfer in the solid state: rate vs. free energy dependence in fixed-distance porphyrin-acceptor molecules

1991 ◽  
Vol 113 (2) ◽  
pp. 719-721 ◽  
Author(s):  
George L. Gaines ◽  
Michael P. O'Neil ◽  
Walter A. Svec ◽  
Mark P. Niemczyk ◽  
Michael R. Wasielewski
Keyword(s):  
Electron Transfer ◽  
Free Energy ◽  
Solid State ◽  
Energy Dependence ◽  
Photoinduced Electron Transfer ◽  
Fixed Distance ◽  
State Rate ◽  
Acceptor Molecules

Tuning the Photoinduced Electron Transfer in a Zr-MOF: Toward Solid-State Fluorescent Molecular Switch and Turn-On Sensor

2018 ◽  
Vol 30 (34) ◽  
pp. 1802329 ◽  
Author(s):  
Bo Gui ◽  
Yi Meng ◽  
Yang Xie ◽  
Jianwu Tian ◽  
Ge Yu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solid State ◽  
Photoinduced Electron Transfer ◽  
Molecular Switch ◽  
Turn On

Computationally Assisted Design of High Signal-to-Noise Photoinduced Electron Transfer-Based Voltage-Sensitive Dyes

2020 ◽  
Author(s):  
Rishikesh Kulkarni ◽  
Anneliese Gest ◽  
Chun Kei Lam ◽  
Benjamin Raliski ◽  
Feroz James ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Dft Calculations ◽  
Photoinduced Electron Transfer ◽  
Density Functional ◽  
Embryonic Stem ◽  
High Sensitivity ◽  
Md Simulations ◽  
High Signal ◽  
Signal To Noise ◽  
Green Fluorescent

<p>High signal-to-noise optical voltage indicators will enable simultaneous interrogation of membrane potential in large ensembles of neurons. However, design principles for voltage sensors with high sensitivity and brightness remain elusive, limiting the applicability of voltage imaging. In this paper, we use molecular dynamics (MD) simulations and density functional theory (DFT) calculations to guide the design of a bright and sensitive green-fluorescent voltage-sensitive fluorophore, or VoltageFluor (VF dye), that uses photoinduced electron transfer (PeT) as a voltage-sensing mechanism. MD simulations predict an 11% increase in sensitivity due to membrane orientation, while DFT calculations predict an increase in fluorescence quantum yield, but a decrease in sensitivity due to a decrease in rate of PeT. We confirm these predictions by synthesizing a new VF dye and demonstrating that it displays the expected improvements by doubling the brightness and retaining similar sensitivity to prior VF dyes. Combining theoretical predictions and experimental validation has resulted in the synthesis of the highest signal-to-noise green VF dye to date. We use this new voltage indicator to monitor the electrophysiological maturation of human embryonic stem cell-derived medium spiny neurons. </p>

Photoinduced electron transfer in mechanically interlocked suit[3]ane systems

2021 ◽  
Author(s):  
Anton J Stasyuk ◽  
Olga A. Stasyuk ◽  
Miquel Solà ◽  
Alexander Voityuk
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
New Class ◽  
Transfer Processes ◽  
Two Component ◽  
Electron Transfer Processes

Suitanes, a new class of two-component mechanically interlocked systems, have recently been developed. In this work, we report a detailed study of photoinduced electron transfer processes in the suit[3]anes consisting...

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