Results 11 to 20 of about 33,034 (271)

Photochromic Cholesteric Liquid Crystals via Arylazopyrazole Functionalization of Hydroxypropyl Cellulose. [PDF]

Adv Mater
We produce a new derivative of hydroxypropyl cellulose functionalized with arylazopyrazole side chains and demonstrate its photoswitchable behaviors in dilute and concentrated aqueous solutions, ultimately designing a series of photochromic cholesteric materials that can be photopatterned as write‐erase displays.
Fine SG, Hildenhagen N, Linke WR, Hansen MR, Ravoo BJ, Chazot CAC.   +5 more
europepmc   +2 more sources

Controlling the LCST-Phase Transition in Azobenzene-Functionalized Poly (N-Isopropylacrlyamide) Hydrogels by Light

Gels, 2023
Poly(N-isopropylacrylamide) PNIPAAm hydrogels were modified with a new azobenzene-containing co-monomer. In this work, light responsiveness as an additional functionality, is conceptualized to induce two phase transitions in the same material, which can ...
Ruchira Colaco, Clement Appiah, Anne Staubitz   +2 more
doaj   +1 more source

Reversible Actuation via Photoisomerization-Induced Melting of a Semicrystalline Poly(Azobenzene).

ACS Macro Letters, 2020
Photoisomerization of azobenzene in polymer matrices is a powerful method to convert photon energy into mechanical work. While most previous studies have focused on incorporating azobenzene within amorphous or liquid crystalline materials, the limited ...
Alexa S. Kuenstler, Kyle D. Clark, Javier Read de Alaniz, R. Hayward   +3 more
semanticscholar   +1 more source

Strong Coupling with Light Enhances the Photoisomerization Quantum Yield of Azobenzene [PDF]

Chem, 2019
Summary The strong coupling between molecules and photons in resonant cavities offers a new toolbox to manipulate photochemical reactions. Although the quenching of photochemical reactions in the strong coupling regimen has been demonstrated before ...
J. Fregoni, G. Granucci, M. Persico, S. Corni   +3 more
semanticscholar   +1 more source

Role of Thr82 for the unique photochemistry of TAT rhodopsin

Biophysics and Physicobiology, 2021
Marine bacterial TAT rhodopsin possesses the pKa of the retinal Schiff base, the chromophore, at neutral pH, and photoexcitation of the visible protonated state forms the isomerized 13-cis state, but reverts to the original state within 10–5 sec.
Teppei Sugimoto, Kota Katayama, Hideki Kandori   +2 more
doaj   +1 more source

Effect of Disperse Red 1 Azobenzene Dye Doping and Annealing on the Thermomechanical and Photomechanical Properties of PMMA Fibers

Applied Sciences, 2022
This work studies the effect of azobenzene dye Disperse Red 1 (DR1) doping and annealing on the thermomechanical and photomechanical properties of poly(methyl methacrylate) (PMMA) fibers.
Zoya Ghorbanishiadeh, Bojun Zhou, Morteza Sheibani Karkhaneh, Rebecca Oehler, Mark G. Kuzyk   +4 more
doaj   +1 more source

Manipulating azobenzene photoisomerization through strong light–molecule coupling [PDF]

Nature Communications, 2018
The formation of hybrid light–molecule states (polaritons) offers a new strategy to manipulate the photochemistry of molecules. To fully exploit its potential, one needs to build a toolbox of polaritonic phenomenologies that supplement those of standard ...
J. Fregoni, G. Granucci, E. Coccia, M. Persico, S. Corni   +4 more
semanticscholar   +1 more source

Position of rhodopsin photoisomerization on the disk surface confers variability to the rising phase of the single photon response in vertebrate rod photoreceptors.

PLoS ONE, 2020
Retinal rods function as accurate photon counters to provide for vision under very dim light. To do so, rods must generate highly amplified, reproducible responses to single photons, yet outer segment architecture and randomness in the location of ...
Giovanni Caruso, Colin J Klaus, Heidi E Hamm, Vsevolod V Gurevich, Clint L Makino, Emmanuele DiBenedetto   +5 more
doaj   +1 more source

Blue light regenerates functional visual pigments in mammals through a retinyl-phospholipid intermediate. [PDF]

, 2017
The light absorbing chromophore in opsin visual pigments is the protonated Schiff base of 11-cis-retinaldehyde (11cRAL). Absorption of a photon isomerizes 11cRAL to all-trans-retinaldehyde (atRAL), briefly activating the pigment before it dissociates ...
Fain, Gordon L, Hakobyan, Hayk, Ingram, Norianne T, Kaylor, Joanna J, Travis, Gabriel H, Tsan, Avian, Xu, Tongzhou   +6 more
core   +1 more source

Facile Synthesis of Self-Assembled NiFe Layered Double Hydroxide-Based Azobenzene Composite Films with Photoisomerization and Chemical Gas Sensor Performances

ACS Omega, 2020
Two kinds of layered double hydroxide (LDH) Langmuir composite films containing azobenzene (Azo) groups were successfully prepared by Langmuir–Blodgett (LB) technology. Then, an X-ray diffractometer (XRD), a transmission electron microscope (TEM), and an
Ying He, Ran Wang, Chenguang Sun, Shufeng Liu, Jingxin Zhou, Lexin Zhang, T. Jiao, Qiuming Peng   +7 more
semanticscholar   +1 more source