Results 21 to 30 of about 42,147 (261)

Photochemistry with Infrared Radiation

CHIMIA, 1981
The irradiation of polyatomic molecules with intense infrared radiation from pulsed laser light sources can induce photochemical reactions, which require the absorption of many (10 to 50) quanta.
Martin Quack
doaj   +1 more source

Diurnal Cycle Relationships between Passive Fluorescence, PRI and NPQ of Vegetation in a Controlled Stress Experiment

Remote Sensing, 2017
In order to estimate vegetation photosynthesis from remote sensing observations; some critical parameters need to be quantified. From all absorbed light; the plant needs to release any excess that is not used for photosynthesis; by non-photochemical ...
Luis Alonso, Shari Van Wittenberghe, Julia Amorós-López, Joan Vila-Francés, Luis Gómez-Chova, Jose Moreno   +5 more
doaj   +1 more source

Semicondutores heteroestruturados: uma abordagem sobre os principais desafios para a obtenção e aplicação em processos fotoquímicos ambientais e energéticos

Química Nova
Heterostructured semiconductors are materials with unique features formed by combination of two or more semiconductors with suitable interface between them.
Romero T. Bueno, Osmando F. Lopes, Kele T. G. Carvalho, Caue Ribeiro, Henrique A. J. L. Mourão   +4 more
doaj   +1 more source

Unified modeling of photothermal and photochemical damage

Frontiers in Ophthalmology
Correlating damage outcomes to a retinal laser exposure is critical for diagnosis and choosing appropriate treatment modalities. Therefore, it is important to understand the causal relationships between laser parameters, such as wavelength, power density,
Michael L. Denton, Clifton D. Clark, Clifton D. Clark, Gary D. Noojin, Haleigh West, Haleigh West, Allison Stadick, Allison Stadick, Taufiquar Khan   +8 more
doaj   +1 more source

B6 vitamers as generators and scavengers of reactive oxygen species

Journal of Photochemistry and Photobiology, 2021
B6 vitamers are important natural compounds for human life, principally for amino acid metabolism, and have been reported as potent scavenger molecules of both endogenous and exogenous reactive oxygen species (ROS).
Italo Rodrigo Calori, Luiza Araújo Gusmão, Antonio Claudio Tedesco   +2 more
doaj   +1 more source

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

Environmental Photochemistry of Amino Acids, Peptides and Proteins

CHIMIA, 2014
Amino acids, peptides and proteins are central building blocks of life and of key importance in the biogeochemistry of aquatic ecosystems. In sunlit surface waters, amino acid-based molecules at different levels of structural organization are ...
Rachel A. Lundeen, Elisabeth M.-L. Janssen, Chiheng Chu, Kristopher Mcneill   +3 more
doaj   +1 more source

Experimental Investigation of the Photochemical Production of Hydrocarbons in Warm Gas Giant Exoplanet Atmospheres

The Astrophysical Journal, 2023
In warm (equilibrium temperature
Benjamin Fleury, Yves Benilan, Olivia Venot, Bryana L. Henderson, Mark Swain, Murthy S. Gudipati   +5 more
doaj   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source