Results 91 to 100 of about 98,956 (351)

Charge Storage and Dark Photocatalysis in Multivariate Ti‐Based Metal‐Organic Frameworks

open access: yesAdvanced Materials, EarlyView.
The mixed‐linker series of the titanium‐based metal–organic framework COK‐47 enables systematic tuning of photoresponsiveness and (dark) photocatalytic activity, deepening our understanding of structure‐property‐function relationships. Tailored metal‐to‐ligand charge transfer between the secondary building units (metal‐oxo layers and organic linkers ...
Julia E. Knapp   +11 more
wiley   +1 more source

Biomass Photochemistry Xiv: Photosensitized Pre-treatment Of Cellulose And Its Role On Cellulase Efficiency

open access: yes, 2015
α-Cellulose, methylcellulose and filter paper (Whatman No. 1) were irradiated with UV light at λ > 254 nm and λ > 300 nm in the presence of sodium nitrite as sensitizer.
Gomez E., Haun M., Duran N.
core   +1 more source

Mechanoactive Biomaterials for Cell–Matrix Mechanotransduction

open access: yesAdvanced Materials, EarlyView.
The graphical abstract shows how individual triggers (force, light, or temperature) and combined optothermal or receptor‐targeted actuation induce material responses at the tissue, cellular, and receptor scales. Their spatial (global or focused) and temporal (continuous or cyclic) modulation determines the resulting mechanical output.
Yi‐Tung Lu   +2 more
wiley   +1 more source

The photophysics and photochemistry of aromatic 1,3-dicarbonyl compounds used as UVA sunscreens [PDF]

open access: yes, 1999
UV radiation can cause harmful effects to human skin, including premature skin ageing and skin cancer. Historically, sunscreens were developed to filter out UVB (290 nm-320 nm), but now the importance of UVA (320 nm-400 nm) sunscreens is realised.
Coultous, Catherine Jane
core  

Vitamin C‐Induced Photo‐Redox Threshold Enables High‐Fidelity Volumetric Printing of Collagen

open access: yesAdvanced Materials, EarlyView.
Tomographic volumetric printing (TVP) of native proteins is limited by uncontrolled background crosslinking. Here, vitamin C is introduced as a biocompatible redox regulator to establish a tunable nonlinear polymerization threshold response for TVP.
Bin Wang   +5 more
wiley   +1 more source

Topologically reconfigurable room-temperature polariton condensates from bound states in the continuum in organic metasurfaces

open access: yesNature Communications
An exciton–polariton condensate is a state of matter with collective coherence leading to many fascinating macroscopic quantum effects. Recently, optical bound states in the continuum (BICs) have been demonstrated as peculiar topological states capable ...
Xingchen Yan   +7 more
doaj   +1 more source

A green chemical approach for nitration of aromatic compounds

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2009
Photochemical aromatic nitration of phenol and salicylic acid has been carried out in the presence of UV radiations and formation of products has been observed spectrophotometrically.
Arpita Dugar   +3 more
doaj   +1 more source

Investigating New Reactivities Enabled by Polariton Photochemistry.

open access: yesJournal of Physical Chemistry Letters, 2019
We perform quantum dynamics simulations to investigate new chemical reactivities enabled by cavity quantum electrodynamics. The quantum light-matter interactions between the molecule and the quantized radiation mode inside an optical cavity create a set ...
Arkajit Mandal, Peng-Fei Huo
semanticscholar   +1 more source

Near‐Infrared Imaging of H2O2 in Plants With Nanosensors Under Environmentally Changing Conditions

open access: yesAdvanced Materials, EarlyView.
This paper reports a ratiometric nanosensor enabling robust, multivariate detection of stress signals (H2O2) in plants, with high resistance to light fluctuations and mechanical disturbances. Single‐walled carbon nanotubes serve as the sensor, Egyptian Blue nanosheets serve as a stable reference, and plant autofluorescence serves as a label‐free ...
Jiaqi Li   +8 more
wiley   +1 more source

Photochemistry in Japan: the Inoue Photochirogenesis Project -a research profile

open access: yes, 2000
The Inoue Photochirogensis Project is part of the ERATO program (Exploratory Research for Advanced Technology) of the Japan Science and Technology Corporation (JST). The project began in 1996, and is located in Toyonaka, Osaka. The project director is Dr.
Inoue, Y.   +5 more
core  

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