Results 41 to 50 of about 42,147 (261)

The Primary Photochemical Process in Bacteriorhodopsin

, 1991
In the halobacterial branch of archaebacteria a special kind of retinal-based photosynthesis is found. Two light-driven ion pumps, bacteriorhodopsin (BR) as a proton pump and halorhodopsion (HR) as a chloride pump occur in the cell membrane and mediate phototrophic growth of halobacterial cells (for review see Lanyi et al., 1984).
Zinth, Wolfgang, Oesterhelt, Dieter
openaire   +2 more sources

Laser‐Welded Cellulose‐Carbon Nanotube Nanocomposites as a 3D Scaffold of Si Anodes for High‐Performance Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A Si anode comprising entangled networks of cellulose and SWCNT (C‐CNT) nanocomposites as an anode electrode for a high‐performance LIB is realized by fully utilizing the generated microstructure of a novel conductive 3D scaffold via a low‐temperature and eco‐friendly process. Additionally, localized heating via photo‐thermal conversion can be utilized
Boeun Ryu, Younghoon Jung, Hojin Son, Min‐Young Kim, Jinsub Lim, Changhun Yun   +5 more
wiley   +1 more source

Quantum Mechanical/Molecular Mechanical (QM/MM) Car-Parrinello Simulations in Excited States

CHIMIA, 2005
The combination of time-dependent density functional theory (TDDFT) for the description of excited states with a hybrid quantum mechanics/molecular mechanics (QM/MM) approach enables the study of photochemical processes in complex environments ...
Marc-Etienne Moret, Enrico Tapavicza, Leonardo Guidoni, Ute F. Röhrig, Marialore Sulpizi, Ivano Tavernelli, Ursula Rothlisberger   +6 more
doaj   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Recent advances in the measurement of thermochemical, electrochemical and photochemical efficiency of CO2 conversion to value-added products - its challenges and future directions

Measurement: Energy
Converting CO2 into value-added products is a sustainable method of lowering greenhouse gas emissions while producing useful chemicals and fuels. This review examines advancements in thermochemical, photochemical, and electrochemical approaches for CO2 ...
Sonali Chaudhari, Harsh Pawar, Kajal Pawar, Pavan More   +3 more
doaj   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

Advanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez, Laura Caliò, Mauricio E. Calvo, Juan F. Galisteo‐López, Jesús Hernández‐Saz, Miriam Herrera‐Collado, Carolina Carrillo‐Carrión, Hernán Míguez   +7 more
wiley   +1 more source

Damage processes in extended laser exposures using an in vitro model

Frontiers in Ophthalmology
Retinal pigment epithelial (RPE) cells are sensitive to both photothermal and photochemical damage when exposed to lasers with wavelengths associated with the retinal blue light hazard.
Nathaniel J. Pope, Jin Ha, Madeline E. Melzer, Priscilla Lopez, Amanda Tijerina, Gary D. Noojin, Michael L. Denton   +6 more
doaj   +1 more source

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

Advanced Functional Materials, EarlyView.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras, Imelda Raczkiewicz, Peggy Bouquet, Jean‐Philippe Dacquin, Jeremy Dhainaut, Anne Goffard, Christophe Volkringer   +6 more
wiley   +1 more source

Drug‐Free Thrombolysis Mediated by Physically Activated Micro/Nanoparticles

Advanced Functional Materials, EarlyView.
Overview of particle‐mediated thrombolytic effects (thermal, mechanical, and chemical) and their activating physical stimuli (light, ultrasound, and magnetic field) in drug‐free thrombolysis. ABSTRACT Thrombus‐associated disorders rank among the world's leading causes of death, with ischemic heart disease and stroke as the main contributors.
Pierre Sarfati, Yoann Lalatonne, Cédric Chauvierre   +2 more
wiley   +1 more source

Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes

Remote Sensing, 2018
We report the first radiative transfer model that is able to simulate phytoplankton fluorescence with both photochemical and non-photochemical quenching included.
Peng-Wang Zhai, Emmanuel Boss, Bryan Franz, P. Jeremy Werdell, Yongxiang Hu   +4 more
doaj   +1 more source