Results 71 to 80 of about 49,863 (262)

Time-resolved imaging of non-diffusive carrier transport in long-lifetime halide perovskite thin films

, 2019
Owing to their exceptional semiconducting properties, hybrid inorganic-organic perovskites show great promise as photovoltaic absorbers. In these materials, long-range diffusion of charge carriers allows for most of the photogenerated carriers to ...
Hafezian, Soroush, Hwang, Hyeon, Kéna-Cohen, Stéphane, Noel, Nakita K., Rand, Barry P., Sridharan, Aravindan   +5 more
core   +1 more source

Insight‐Guided Optimization of the Individual Steps in Ambient Slot‐Die‐Coated Perovskite Solar Cells

Advanced Energy and Sustainability Research, EarlyView.
This graphical abstract presents an integrated workflow for optimizing perovskite thin film fabrication by tuning ink rheology, refining processing parameters, and controlling crystallization. Viscosity control and process optimization precisely regulate wet film thickness and drying time, while crystallization directed by solvent additives yields ...
Alejandra Flórez, Jhoan Ruiz, Juan Felipe Montoya, Rafael Betancur, Michael Götte, Edgar Nandayapa, Eva Unger, Daniel Ramírez, Franklin Jaramillo   +8 more
wiley   +1 more source

Whole-molecule disorder of the heterometallic complex diaqua-1κ2O-dichlorido-2κ2Cl-(μ-2-formyl-6-methoxyphenolato-1κ2O1,O2:2κO6){μ-2-methoxy-6-[(methylimino)methyl]phenolato-1κ2N,O1:2κO6}lead(II)nickel(II)

Acta Crystallographica Section E: Crystallographic Communications
The new molecular complex [NiPb(C9H10NO2)(C8H7NO3)Cl2(H2O)2] with the Schiff base 2-methoxy-6-[(methylimino)methyl]phenol and ortho-vanillin ligands, both deprotonated, crystallizes in the monoclinic space group P21/c with one molecule per asymmetric ...
Olga Yu. Vassilyeva, Vladimir N. Kokozay, Evgeny Goreshnik   +2 more
doaj   +1 more source

Experimental identification of aminomethanol (NH2CH2OH)—the key intermediate in the Strecker Synthesis

Nature Communications, 2022
The Strecker synthesis is considered a viable route to amino acids formation on the primordial Earth. Here the authors succeed in observing its elusive intermediate aminomethanol, formed by insertion of an electronically excited oxygen atom in ...
Santosh K. Singh, Cheng Zhu, Jesse La Jeunesse, Ryan C. Fortenberry, Ralf I. Kaiser   +4 more
doaj   +1 more source

Preparation of substituted hydrazines [PDF]

, 1952
Thesis (M.A.)--Boston UniversityAlthough a large number of substituted hydrazines are known, the preparation of simple monoalkylhydrazines in a manner suitable for the large-scale economical synthesis has never been developed.
Briggs, Richard Maurice
core  

Selenocysteine, pyrrolysine and the unique energy metabolism of methanogenic archaea [PDF]

, 2010
Methanogenic archaea are a group of strictly anaerobic microorganisms characterized by their strict dependence on the process of methanogenesis for energy conservation.
Krzycki, Joseph A., Rother, Michael
core   +3 more sources

Synthesis and Characterization of π‐Extended Azulenes via Nucleophilic Substitution and Intramolecular Cyclization of 5‐Alkynyl‐6‐Fluoroazulenes

ChemistryEurope, EarlyView.
A modular synthetic approach enables the preparation of azulene‐fused heterocycles via nucleophilic aromatic substitution followed by intramolecular cyclization of alkynyl fluoroazulenes. The method allows the incorporation of various heteroatoms (N, O, S, Se, and Te), leading to structurally diverse heteroannulated azulenes.
Martin C. Dietl, Matthias Scherr, Christopher Hüßler, Henrik T. Habeck, Carmen L. M. Henel, Jürgen Graf, Frank Rominger, Matthias Rudolph, A. Stephen K. Hashmi   +8 more
wiley   +1 more source

Fabrication of Tungsten Oxide Nanowalls through HFCVD for Improved Electrochemical Detection of Methylamine

Micromachines
In this study, well-defined tungsten oxide (WO3) nanowall (NW) thin films were synthesized via a controlled hot filament chemical vapor deposition (HFCVD) technique and applied for electrochemical detection of methylamine toxic substances.
Mohammad Imran, Eun-Bi Kim, Tae-Geum Kim, Sadia Ameen, Mohammad Shaheer Akhtar, Dong-Heui Kwak   +5 more
doaj   +1 more source

One‐Pot Ruthenium‐Catalyzed Synthesis of Benzyl/Allyl‐Halide Substituted (dihydro)naphthalenes via Radical Benzannulation

ChemistryEurope, EarlyView.
A one‐pot protocol to synthesize reactive benzyl‐ and allyl‐halide‐substituted (dihydro)naphthalenes from 2,3‐aryl‐1,3‐butadiene substrates and halogenated alkanes has been developed, using [Cp*RuCl(PPh3)2] as the catalyst. Mechanistic studies revealed an atom transfer radical addition and radical benzannulation sequence, followed by HCl elimination ...
Nicole S. van Leeuwen, David Vesseur, Thijmen Bonhoff, Jeffrey van Laar, Coert E. J. van Lare, Simon Mathew, Sonja Pullen, Joost N. H. Reek, Aalbert Zwijnenburg, Bas de Bruin   +9 more
wiley   +1 more source

Data‐Driven Design of Scalable Perovskite Film Fabrication via Machine Learning–Guided Processing

Carbon Energy, EarlyView.
Considering complex process parameters and poor reproducibility in perovskite thin film fabrication, this study uses machine learning to analyze and predict high‐dimensional process variables. The Random Forest model, identified as the most effective, can effectively analyze and rapidly predict optimal process parameters from extensive data.
Hong Liu, Kangyan Liu, Biao Zhang, Ziang Chen, Yi Yang, Qiang Sun, Tao Ye, Bed Poudel, Kai Wang, Congcong Wu   +9 more
wiley   +1 more source