Results 111 to 120 of about 33,034 (271)

Photo-controlled permeation of spiropyran modified gramicidin A ion channel [PDF]

open access: yes, 2006
Thesis (M.S.) University of Alaska Fairbanks, 2006Biomimetic devices show great potential as being molecular sensors of biological species. Gramicidin A (gA) is a well studied ionophore that can be easily modified at the C-terminus to be incorporated ...
Cushing, Gregory W.
core  

Structural Mechanism of an Efficacy Photoswitch Targeting the β2‐adrenergic Receptor

open access: yesAngewandte Chemie International Edition, EarlyView.
Time‐resolved structures from x‐ray free‐electron laser measurements combined with cellular assays demonstrate how the photoswitchable β‐blocker photoazolol‐1 acts as an efficacy switch of β2‐adrenergic receptor function. Light‐induced ligand repositioning shifts activity from inverse agonism toward neutral antagonism by altering local helical ...
Robin Stipp   +29 more
wiley   +1 more source

EVALUATION OF THE AVOBENZONE PHOTOSTABILITY IN SOLVENTS USED IN COSMETIC FORMULATIONS

open access: yesVitae, 2011
The use of sunscreen products is very important nowadays. The photostability of UV filters incorporated in these products must be preserved during its storing and application processes in order to achieve the claims about photoprotection of the ...
John Jairo VALLEJO   +2 more
doaj  

Generation of Light Scattering States in Cholesteric Liquid Crystals by Optically Controlled Boundary Conditions

open access: yesCrystals, 2013
Circularly polarized light was previously employed to stimulate the reversible and reconfigurable writing of scattering states in cholesteric liquid crystal (CLC) cells constructed with a photosensitive layer.
Timothy J. Bunning   +6 more
doaj   +1 more source

Flexible interlocked porous frameworks allow quantitative photoisomerization in a crystalline solid

open access: yesNature Communications, 2017
Photochromic molecules have shown much promise as molecular components of stimuli-responsive materials, but despite recent achievements in various photoresponsive materials, quantitative conversion in photochemical reactions in solids is hampered by the ...
Yongtai Zheng   +5 more
semanticscholar   +1 more source

Light‐controlled molecular tweezers capture specific amyloid oligomers

open access: yesAggregate
Amyloid‐β peptide (Aβ) oligomers, characteristic symptom of Alzheimer's disease (AD), have been identified as the most neurotoxic species and significant contributors to neurodegeneration in AD.
Chengyuan Qian   +5 more
doaj   +1 more source

Synthesis and characterization of bis(4-amino-2-bromo-6-methoxy)azobenzene derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2019
Aminoazobenzene derivatives with four ortho substituents with respect to the N–N double bond are a relatively unexplored class of azo compounds that show promise for use as photoswitches in biology.
David Martínez-López   +3 more
doaj   +1 more source

Holographic Recording Materials Development [PDF]

open access: yes
Organic photorefractive materials were evaluated for application in a reversible holographic memory system. Representative indigo and thioindigo derivatives and several stilbene derivatives were studied as well as 15, 16-dialkyldihydropyrene derivatives ...
Craig, R. A.   +3 more
core   +1 more source

Advancing design strategies in smart stimulus‐responsive liposomes for drug release and nanomedicine

open access: yesBMEMat, EarlyView.
Schematic illustration of stimulus‐responsive liposomes designed for controlled drug release and nanomedicine. The innermost circle represents different liposomal structures, including unilamellar, multilamellar, and multivesicular liposomes. The middle layer illustrates the responsive phospholipid components.
Yuchen Guo   +9 more
wiley   +1 more source

Photoinduced Electron Transfer (PET) as Key to Accelerate the Cycloreversion Reaction of Arylquadricyclanes

open access: yesChemistry – A European Journal, EarlyView.
It is demonstrated that the photoinduced cycloreversion of a methoxynaphthylquadricyclane in the presence of suitable photocatalysts gives quantitatively the corresponding norbornadiene. As this photochromic norbornadiene‐quadricyclane cycle has favorable properties for light energy conversion, this method provides a useful tool for the targeted ...
Julian Felix Maria Hebborn   +4 more
wiley   +1 more source

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