Photoinduced electron transfer in sexithiophene/fullerene derivative blends: evidence of long-lived spin correlated radical pairs

1999 ◽  
pp. 429-430 ◽  
Author(s):  
Luigi Pasimeni ◽  
Anna Lisa Maniero ◽  
Marco Ruzzi ◽  
Maurizio Prato ◽  
Tatiana Da Ros ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Fullerene Derivative ◽  
Radical Pairs

Hybrid Self-Assembly of a π Gelator and Fullerene Derivative with Photoinduced Electron Transfer for Photocurrent Generation

Langmuir ◽  
2010 ◽  
Vol 26 (9) ◽  
pp. 6669-6675 ◽  
Author(s):  
Pengchong Xue ◽  
Ran Lu ◽  
Li Zhao ◽  
Defang Xu ◽  
Xiaofei Zhang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Self Assembly ◽  
Photoinduced Electron Transfer ◽  
Fullerene Derivative ◽  
Photocurrent Generation

The central role of ligands in electron transfer from perovskite nanocrystals

MRS Advances ◽  
2017 ◽  
Vol 2 (43) ◽  
pp. 2327-2335 ◽  
Author(s):  
Alberto Privitera ◽  
Marcello Righetto ◽  
Renato Bozio ◽  
Lorenzo Franco
Keyword(s):  
Electron Transfer ◽  
Transfer Process ◽  
Photoinduced Electron Transfer ◽  
Fullerene Derivative ◽  
Mixed Solution ◽  
Electron Transfer Process ◽  
Perovskite Nanocrystals ◽  
Pulsed Epr ◽  
Photoinduced Processes

ABSTRACTThe nanoscale miniaturization of hybrid organic-inorganic perovskite has given rise to new functionalities, but the full understanding of the multifaceted properties of perovskite nanostructures is still incomplete. Using a combination of optical and magnetic resonance (EPR) spectroscopies, we focused our investigation on the photoinduced electron transfer process taking place in perovskite nanocrystals blended with the fullerene derivative PCBM. In particular we analyzed the different effect of two types of nanocrystal ligands, namely octylamine and oleylamine, on the photoinduced processes. The electron transfer process resulted in efficient fluorescence quenching in a mixed solution and in the formation of charges (PCBM anions) detected by EPR in the blends. Both the optical and EPR techniques revealed a stronger effect when the shorter ligand is present. Finally, pulsed EPR demonstrated the stabilization of the photogenerated charges in proximity of perovskite nanocrystals.

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...

scholarly journals A quantum optics approach to photoinduced electron transfer in cavities

2021 ◽  
Vol 154 (5) ◽  
pp. 054104
Author(s):  
D. Wellnitz ◽  
G. Pupillo ◽  
J. Schachenmayer
Keyword(s):  
Electron Transfer ◽  
Quantum Optics ◽  
Photoinduced Electron Transfer
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