Results 101 to 110 of about 158,830 (405)

Global impact of nitrate photolysis in sea-salt aerosol on NOx, OH, and O3 in the marine boundary layer

Atmospheric Chemistry and Physics, 2018
. Recent field studies have suggested that sea-salt particulate nitrate (NITs) photolysis may act as a significant local source of nitrogen oxides (NOx) over oceans. We present a study of the global impact of this process on oxidant concentrations in the
P. Kasibhatla, T. Sherwen, M. J. Evans, L. Carpenter, C. Reed, B. Alexander, Qianjie Chen, M. Sulprizio, James D. Lee, K. Read, W. Bloss, L. Crilley, W. Keene, A. Pszenny, A. Hodzic   +14 more
semanticscholar   +1 more source

New Efficient D‐π‐A and A‐π‐A Structured Type I Radical Photoinitiators for Additive Manufacturing Nanomaterials Preparation

Advanced Materials Technologies, EarlyView.
Groundbreaking advancements are discovered in 3D printing with new type‐I radical photoinitiators, including 1,1‐dimethoxy‐1‐phenylpropan‐2‐one. These innovative compounds, effective under visible light, enhance photopolymerization of acrylates and methacrylates, facilitating the creation of efficient nanocomposites and unlock the future of polymer ...
Andrzej Świeży, Filip Petko, Dominika Krok‐Janiszewska, Patryk Szymaszek, Mariusz Galek, Joanna Ortyl   +5 more
wiley   +1 more source

Photochemistry of the PAH pyrene in water ice: the case for ion-mediated solid-state astrochemistry

, 2009
Context. Icy dust grains play an important role in the formation of complex inter- and circumstellar molecules. Observational studies show that polycyclic aromatic hydrocarbons (PAHs) are abundantly present in the ISM in the gas phase.
A. Bakker, Bernstein, Bernstein, Bito, Bouwman, Bouwman, Briggs, Draine, Draine, Draine, Fuchs, Gudipati, Gudipati, Gudipati, Gudipati, Gudipati, H. Linnartz, H. M. Cuppen, Halasinski, Hsiao, Ioppolo, J. Bouwman, Kjaergaard, Kobayashi, L. J. Allamandola, Langelaar, Li, Mathis, Milosavljevic, Montejano, Muñoz Caro, Okada, Okada, Shen, Smith, Sternberg, Stevens, Tielens, Vala, van Ijzendoorn, Wang, Weisman, Whittet, Woon, Öberg, Öberg, Öberg, Öberg, Öberg   +48 more
core   +1 more source

Optical Absorptivity versus Molecular Composition of Model Organic Aerosol Matter [PDF]

, 2009
Aerosol particles affect the Earth’s energy balance by absorbing and scattering radiation according to their chemical composition, size, and shape. It is generally believed that their optical properties could be deduced from the molecular composition of ...
Colussi, A. J., Guzmán, Marcelo I., Hoffmann, Michael R., Rincón, Angela G.   +3 more
core   +2 more sources

Photolysis of Mono- and Dichloramines in UV/Hydrogen Peroxide: Effects on 1,4-Dioxane Removal and Relevance in Water Reuse.

Environmental Science and Technology, 2018
Growing demands and increasing scarcity of fresh water resources necessitate potable water reuse, which has been implemented with the aid of UV-based advanced oxidation processes (UV/AOPs) that remove potentially hazardous trace organic contaminants from
S. Patton, M. Romano, Vincenzo Naddeo, K. Ishida, Haizhou Liu   +4 more
semanticscholar   +1 more source

Enhanced Performance 3‐D Printed PLA Parts through a Photo‐Initiator Mediated UV‐Curing

Advanced Materials Technologies, EarlyView.
This solvent‐free method enhances 3‐D printed PLA parts by incorporating photo‐initiators during fabrication, followed by up to 3 min UV treatment. This process improves PLA's mechanical properties, including a 64% increase in tensile strength, while addressing weak interlayer bonding and outdoor sensitivity.
Dylan Jubinville, Tizazu H. Mekonnen
wiley   +1 more source

Donor‐π‐Acceptor Photoinitiators for High‐Efficiency Visible LED and Sunlight Polymerization and High‐Precision 3D Printing

Angewandte Chemie, EarlyView.
The proposed D‐π‐A structured dyes enable efficient electron transfer with additives, thanks to their tailored architecture, making them ideal for high‐performance photoinitiating systems. They allow the fabrication of high‐precision 3D printed objects and exhibit outstanding performance under sunlight.
Ji Feng, Tong Gao, Fabrice Morlet‐Savary, Michael Schmitt, Celine Dietlin, Jing Zhang, Xiaotong Peng, Pu Xiao, Frédéric Dumur, Jacques Lalevée   +9 more
wiley   +2 more sources

Fluorescence-Detected Circular Dichroism of a Chiral Molecular Monolayer with Dielectric Metasurfaces [PDF]

, 2020
Strong enhancement of molecular circular dichroism has the potential to enable efficient asymmetric photolysis, a method of chiral separation that has conventionally been impeded by insufficient yield and low enantiomeric excess. Here, we study experimentally how predicted enhancements in optical chirality density near resonant silicon nanodisks boost ...
arxiv   +1 more source

Matrix effect on surface-catalyzed photolysis of nitric acid

Scientific Reports, 2019
Photolysis rate constant of HNO3 on the surface (HNO3(s)) has been found to be enhanced by 1–4 orders of magnitude from that of gaseous HNO3, with HONO and NO2 as the main products.
C. Ye, Ning Zhang, Honglian Gao, Xianliang Zhou   +3 more
semanticscholar   +1 more source

Curcuminoid Derivatives with a Donor‐Acceptor‐Donor Architecture: an Outstanding Platform for Highly‐Efficient Near‐Infrared Electroluminescence and Amplified Spontaneous Emission

Advanced Optical Materials, EarlyView.
Curcuminoid boron difluoride dyes containing triphenylamine units are prepared and their photophysical and electrochemical properties are investigated. These new light‐emitting dyes are used in organic light‐emitting diodes (OLEDs) emitting at 800 nm with 1% external quantum efficiency, and show low threshold amplified spontaneous emission in thin ...
Anthony D'Aléo, Xun Tang, Dae‐Hyeon Kim, Danillo Valverde, Elena Zaborova, Gabriel Canard, Arnaud Brosseau, Loïc Mager, Gilles Clavier, Chihaya Adachi, Yoann Olivier, Jean‐Charles Ribierre   +11 more
wiley   +1 more source