Results 41 to 50 of about 1,913,998 (293)

Slower carriers limit charge generation in organic semiconductor light-harvesting systems

Nature Communications, 2016
In organic solar cells, the photogeneration of free charge carriers is limited by the dissociation of interfacial charge transfer states. Here, the authors study the impact of charge carrier mobilities in operational devices and show that the slowest ...
Martin Stolterfoht, Ardalan Armin, Safa Shoaee, Ivan Kassal, Paul Burn, Paul Meredith   +5 more
doaj   +1 more source

Marcus inverted region of charge transfer from low-dimensional semiconductor materials

Nature Communications, 2021
Marcus inverted region for charge transfer from low-dimensional semiconductor materials has been long sought after. Here, the authors reveal this region by directly measuring charge transfer from single-charge states rather than excitonic states.
Junhui Wang, Tao Ding, Kaimin Gao, Lifeng Wang, Panwang Zhou, Kaifeng Wu   +5 more
doaj   +1 more source

XPS evidence for molecular charge-transfer doping of graphene

, 2010
By employing x-ray photoelectron spectroscopy (XPS), we have been able to establish the occurrence of charge-transfer doping in few-layer graphene covered with electron acceptor (TCNE) and donor (TTF) molecules.
Barman, Barun Das, Bellitto, Bostwick, C.N.R. Rao, Chen, D.D. Sarma, Das, Das, Debraj Choudhury, Ferrari, Katsnelson, Krishnakumar, Matsumoto, Nanda, Nanda, Novoselov, Novoselov, Pisana, Santra, Sarma, Schniepp, Shiraishi, Subrahmanyam, Tengstedt, Tomaszewick, Valade, Varghese, Voggu, Wei, Zhou   +30 more
core   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Fluctuation-Facilitated Charge Migration along DNA

, 2000
We propose a model Hamiltonian for charge transfer along the DNA double helix with temperature driven fluctuations in the base pair positions acting as the rate limiting factor for charge transfer between neighboring base pairs.
A. Garg, B. Giese, C. Calladine, C. Wan, D. B. Hall, D. Eley, D. Emin, D. Jerome, D. Ly, D. Ly, E. Brauns, E. Conwell, G. Grüner, H. McConnell, H. P. Lu, H. Sugiyama, I. Saito, J. Jortner, J. P. Lewis, J. Rudnick, L. Stryer, M. R. D'Orsogna, P. T. Henderson, R. Bruinsma, S. Alexander, S. Pryardashi, S. Swaminathan, T. Meade, Y. Duan   +28 more
core   +1 more source

Constrained-DFT method for accurate energy level alignment of metal/molecule interfaces [PDF]

, 2013
We present a computational scheme for extracting the energy level alignment of a metal/molecule interface, based on constrained density functional theory and local exchange and correlation functionals.
Pemmaraju, C. D., Rungger, I., Sanvito, S., Schwingenschloegl, U., Souza, A. M.   +4 more
core   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Experimental Study on Heat Transfer Performance of Closed-loopSpray Cooling Using R134a

Zhileng xuebao, 2021
In this study, an R134a closed-loop spray cooling system was built to investigate the effects of flow rate, subcooling degree, and refrigerant charge on the steady spray cooling heat transfer performance.
Zhou Nianyong, Feng Hao, Xu Hongye, Liu Wenbo, Guo Yixing, Gan Xinhai   +5 more
doaj  

Short-Range Charge Transfer in DNA Base Triplets: Real-Time Tracking of Coherent Fluctuation Electron Transfer

Molecules, 2023
The short-range charge transfer of DNA base triplets has wide application prospects in bioelectronic devices for identifying DNA bases and clinical diagnostics, and the key to its development is to understand the mechanisms of short-range electron ...
Lixia Zhu, Qi Li, Yongfeng Wan, Meilin Guo, Lu Yan, Hang Yin, Ying Shi   +6 more
doaj   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source