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A dynamic charge-charge interaction modulates PP2A
Xinru Wang, Dimitriya H Garvanska, Isha Nasa, Yumi Ueki, Gang Zhang, Arminja N Kettenbach, Wolfgang Peti, Jakob Nilsson, Rebecca Page
Apr 01, 2020
The recruitment of substrates by the ser/thr protein phosphatase 2A (PP2A) is poorly understood, limiting our understanding of PP2A-regulated signaling. Recently, the first PP2A:B56 consensus binding motif, LxxIxE, was...
E. coli KIF4A PP2A-B56 Biochemistry chemical biology Dynamic charge-charge interactions human Intrinsically Disordered Protein molecular biophysics protein phosphatase structural and cell biology structural biology Amino Acid Sequence Cloning Molecular Gene Expression Regulation HeLa Cells Humans Kinesins Models Molecular Mutation Protein Conformation Protein Phosphatase 2 RNA Interference Substrate Specificity
Kernel charge equilibration
Abstract
State-of-the-art machine learning (ML) interatomic potentials use local representations of atomic environments to ensure linear scaling and size-extensivity. This implies...
Long-lived and disorder-free charge transfer states enable endothermic charge separation in efficient non-fullerene organic solar cells.
Ture F Hinrichsen, Christopher CS Chan, Chao Ma, David Paleček, Alexander Gillett, Shangshang Chen, Xinhui Zou, Guichuan Zhang, Hin-Lap Yip, Kam Sing Wong, Richard H Friend, He Yan, Akshay Rao, Philip CY Chow
Oct 06, 2020
Organic solar cells based on non-fullerene acceptors can show high charge generation yields despite near-zero donor-acceptor energy offsets to drive charge separation and overcome the mutual Coulomb attraction between electron...
Kinetics versus Charge SeparationSeparation
Oxygen-deficient iron oxide thin films, which have recently been shown to be highly active for photoelectrochemical water oxidation, were surface-functionalized with a monolayer of a molecular iridium water oxidation cocatalyst....
Development of a Charge Estimator for Piezoelectric Actuators
Morteza Mohammadzaheri, Mohammadreza Emadi, Mojtaba Ghodsi, Issam Bahadur, Musaab Zarog, Ashraf Saleem
Jan 01, 2020
Charge of a piezoelectric actuator is proportional to its displacement for a wide area of operating. Hence, a charge estimator can estimate displacement for such actuators. However, existing charge estimators take a sizable...
Published by: IGI Global Scientific Publishing
Biomolecular and electrochemical charge detection by a micromechanical electrometer
A micromechanical electrometer is applied to the label-free detection of biomolecular interactions and electrochemical charge sensing. The primary element of the electrometer is a micromechanical variable capacitor to modulate...
Microscopic origins of charge transport in triphenylene systems
Ian R. Thompson, Mary K. Coe, Alison B. Walker, Matteo Ricci, Otello M. Roscioni, Claudio Zannoni
Jun 05, 2018
We study the effects of molecular ordering on charge transport at the mesoscale level in a layer of ≈9000 hexa-octyl-thio-triphenylene discotic mesogens with dimensions of ≈20×20×60nm3. Ordered (columnar) and...
Kinetics versus Charge SeparationSeparation
Oxygen-deficient iron oxide thin films, which have recently been shown to be highly active for photoelectrochemical water oxidation, were surface-functionalized with a monolayer of a molecular iridium water oxidation cocatalyst....
Extensive layer clouds in the global electric circuit
A fair weather electric field has been observed near the Earth’s surface for over two centuries. The field is sustained by charge generation in distant disturbed weather regions, through current flow in the Global Electric...
Biomolecular and electrochemical charge detection by a micromechanical electrometer
A micromechanical electrometer is applied to the label-free detection of biomolecular interactions and electrochemical charge sensing. The primary element of the electrometer is a micromechanical variable capacitor to modulate...
Microscopic origins of charge transport in triphenylene systems
Ian R. Thompson, Mary K. Coe, Alison B. Walker, Matteo Ricci, Otello M. Roscioni, Claudio Zannoni
Jun 05, 2018
We study the effects of molecular ordering on charge transport at the mesoscale level in a layer of ≈9000 hexa-octyl-thio-triphenylene discotic mesogens with dimensions of ≈20×20×60nm3. Ordered (columnar) and...
Screened Coulomb interactions with non-uniform surface charge
The screened Coulomb interaction between a pair of infinite parallel planes with spatially varying surface charge is considered in the limit of small electrical potentials for arbitrary Debye lengths. A simple expression for the...
Modelling charge transport in data DNA using transfer matrices with diagonal terms
There is increasing evidence that DNA can support a considerable degree of charge transport along the strand by hopping of holes from one base to another, and that this charge transport may be relevant to DNA regulation, damage...
Vapour-Deposited Cesium Lead Iodide Perovskites
Eline M Hutter, Rebecca J Sutton, Sanjana Chandrashekar, Mojtaba Abdi-Jalebi, Samuel D Stranks, Henry J Snaith, Tom J Savenije
Nov 01, 2018
Metal halide perovskites such as methylammonium lead iodide (MAPbI3) are highly promising materials for photovoltaics. However, the relationship between the organic nature of the cation and the optoelectronic quality remains...
Modelling charge transport in data DNA using transfer matrices with diagonal terms
There is increasing evidence that DNA can support a considerable degree of charge transport along the strand by hopping of holes from one base to another, and that this charge transport may be relevant to DNA regulation, damage...
Extensive layer clouds in the global electric circuit
A fair weather electric field has been observed near the Earth’s surface for over two centuries. The field is sustained by charge generation in distant disturbed weather regions, through current flow in the Global Electric...
Positive charge loading at protein termini is due to membrane protein topology, not a translational ramp
In the great majority of genomes, the use of positive charge increases, on average, approaching protein N-termini. Such charged residues slow ribosomes by interacting with the negatively charged exit tunnel. This has been...
Positive charge loading at protein termini is due to membrane protein topology, not a translational ramp
In the great majority of genomes, the use of positive charge increases, on average, approaching protein N-termini. Such charged residues slow ribosomes by interacting with the negatively charged exit tunnel. This has been...
The binding energy and dynamics of charge-transfer states in organic photovoltaics with low driving force for charge separation.
Yifan Dong, Hyojung Cha, Jiangbin Zhang, Ernest Pastor, Pabitra Shakya Tuladhar, Iain McCulloch, James R Durrant, Artem A Bakulin
Mar 13, 2019
Recent progress in organic photovoltaics (OPVs) has been enabled by optimization of the energetic driving force for charge separation, and thus maximization of open-circuit voltage, using non-fullerene acceptor (NFA) materials....
Giant quantum Hall plateaus generated by charge transfer in epitaxial graphene.
JA Alexander-Webber, J Huang, DK Maude, TJBM Janssen, A Tzalenchuk, V Antonov, T Yager, S Lara-Avila, S Kubatkin, R Yakimova, RJ Nicholas
May 01, 2018
Epitaxial graphene has proven itself to be the best candidate for quantum electrical resistance standards due to its wide quantum Hall plateaus with exceptionally high breakdown currents. However one key underlying mechanism, a...
Charge accumulation kinetics in multi-redox molecular catalysts immobilised on TiO2.
Carlota Bozal-Ginesta, Camilo A Mesa, Annika Eisenschmidt, Laia Francàs, Ravi B Shankar, Daniel Antón-García, Julien Warnan, Janina Willkomm, Anna Reynal, Erwin Reisner, James R Durrant
Jul 28, 2021
Multi-redox catalysis requires the accumulation of more than one charge carrier and is crucial for solar energy conversion into fuels and valuable chemicals. In photo(electro)chemical systems, however, the necessary accumulation...
High Performance PbS Quantum Dot/Graphene Hybrid Solar Cell with Efficient Charge Extraction.
Byung-Sung Kim, Darren CJ Neo, Bo Hou, Jong Bae Park, Yuljae Cho, Nanlin Zhang, John Hong, Sangyeon Pak, Sanghyo Lee, Jung Inn Sohn, Hazel E Assender, Andrew AR Watt, SeungNam Cha, Jong Min Kim
Dec 13, 2018
Hybrid colloidal quantum dot (CQD) solar cells are fabricated from multilayer stacks of lead sulfide (PbS) CQD and single layer graphene (SG). The inclusion of graphene interlayers is shown to increase power conversion...
Ultrafast long-range charge separation in organic semiconductor photovoltaic diodes.
Simon Gélinas, Akshay Rao, Abhishek Kumar, Samuel L Smith, Alex W Chin, Jenny Clark, Tom S van der Poll, Guillermo C Bazan, Richard H Friend
Dec 04, 2018
Understanding the charge-separation mechanism in organic photovoltaic cells (OPVs) could facilitate optimization of their overall efficiency. Here we report the time dependence of the separation of photogenerated electron hole...
Multiscale Modeling of Charge and Energy Transport in Organic Light-Emitting Diodes and Photovoltaics
Alison B Walker
Sep 01, 2009
Modelling organic devices is an outstanding challenge because device performance is very sensitive to how the molecules are packed and the films are highly disordered. An understanding of charge and exciton (bound electron-hole...
Multiscale Modeling of Charge and Energy Transport in Organic Light-Emitting Diodes and Photovoltaics
Alison B Walker
Sep 01, 2009
Modelling organic devices is an outstanding challenge because device performance is very sensitive to how the molecules are packed and the films are highly disordered. An understanding of charge and exciton (bound electron-hole...
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