Results 11 to 20 of about 6,678 (238)

Evaluation of Photoswitching Properties for Hockey Stick-Shaped Mesogens Bearing Azo Benzene Moieties

Frontiers in Physics, 2021
In this paper, we report the photoresponsive behavior of hockey stick-shaped mesogens bearing azo wing with different terminal alkoxy chains at one terminal end.
B. N Sunil, M. Monika, Govindaswamy Shanker, Gurumurthy Hegde, Veena Prasad   +4 more
doaj   +1 more source

Stability and Photoisomerization of Stilbenes Isolated from the Bark of Norway Spruce Roots

Molecules, 2021
Stilbenes or stilbenoids, major polyphenolic compounds of the bark of Norway spruce (Picea abies L. Karst), have potential future applications as drugs, preservatives and other functional ingredients due to their antioxidative, antibacterial and ...
Harri Latva-Mäenpää, Riziwanguli Wufu, Daniel Mulat, Tytti Sarjala, Pekka Saranpää, Kristiina Wähälä   +5 more
doaj   +1 more source

Real-time tracking of phytochrome's ring D orientational changes during Pr photoisomerization: Two Pr isoforms with different photoisomerization yields

EPJ Web of Conferences, 2013
Phytochromes' ring D orientational changes are tracked during Z-to-E photoisomerization by polarization resolved femtosecond visible pump-infrared probe spectroscopy. Two distinct Pr isoforms Pr-I and Pr-II exhibit photoisomerization yields of 3% and 29%,
González L., Matute R., Hahn J., von Haimberger T., Linke M., Yang Y., Schmieder P., Heyne K.   +7 more
doaj   +1 more source

Photoisomerization of a Fullerene Dimer

The Journal of Physical Chemistry C, 2008
A photo-switchable fullerene dimer and its analogous nitrogen endohedral species have been synthesized and characterized. Irradiation by ultraviolet and visible light has been used to switch between the trans and cis isomers of both the C and N@C based dimers.
Zhang, Jinying, Porfyrakis, Kyriakos, Morton, John J. L., Sambrook, Mark R., Harmer, Jeffrey, Xiao, Li, Ardavan, Arzhang, Briggs, G. Andrew D.   +7 more
openaire   +6 more sources

Photo-induced and thermal reactions in thin films of an azobenzene derivative on Bi(111)

New Journal of Physics, 2014
Azobenzene is a prototypical molecular switch which can be interconverted with UV and visible light between a trans and a cis isomer in solution. While the ability to control their conformation with light is lost for many molecular photoswitches in the ...
Christopher Bronner, Petra Tegeder
doaj   +1 more source

Photomechanical Molecular Crystals of an Azopyridine Derivative and Its Zinc(II) Complex: Synthesis, Crystallization and Photoinduced Motion

Crystals, 2020
In this work, photomechanical molecular crystals of 4-(4-(6-Hydroxyhexyloxy) phenylazo) pyridine (6cazpy) and its zinc(II) organic complex (complex-I) were synthesized and crystallized.
Yanmei Guo, Yunhui Hao, Lei Gao, Hongxun Hao   +3 more
doaj   +1 more source

Detailed Photoisomerization Dynamics of a Green Fluorescent Protein Chromophore Based Molecular Switch

International Journal of Photoenergy, 2014
With density-functional-based nonadiabatic molecular dynamics simulations, trans-to-cis and cis-to-trans photoisomerizations of a green fluorescent protein chromophore based molecule 4-benzylidene-2-methyloxazol-5(4H)-one (BMH) induced by the excitation ...
Chen-Wei Jiang, Ai-Ping Fang, Di Zhao, Hong-Rong Li, Rui-Hua Xie, Fu-Li Li   +5 more
doaj   +1 more source

Mechanism and Dynamics of Azobenzene Photoisomerization

Journal of the American Chemical Society, 2003
The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate pipi* excited states, S2 and S3,4, were identified in a region hitherto associated with only one excited state.
Schultz, Thomas, Quenneville, J, Levine, B, Toniolo, A, Martinez, TJ, Lochbrunner, S, Schmitt, M, Shaffer, JP, Zgierski, MZ, Stolow, A   +9 more
openaire   +4 more sources

E/Z Molecular Photoswitches Activated by Two-Photon Absorption: Comparison between Different Families

Molecules, 2021
Nonlinear optical techniques as two-photon absorption (TPA) have raised relevant interest within the last years due to the capability to excite chromophores with photons of wavelength equal to only half of the corresponding one-photon absorption energy ...
Marco Marazzi, Cristina García-Iriepa, Carlos Benitez-Martin, Francisco Najera, Antonio Monari, Diego Sampedro   +5 more
doaj   +1 more source

Intraannular photoreactions in pseudo-geminally substituted [2.2]paracyclophanes

Beilstein Journal of Organic Chemistry, 2011
The photoisomerization of the pseudo-geminal tetraene 11 furnishes the cyclooctadiene derivatives 13 and 15 with a completely new type of molecular bridge for a [2.2]paracyclophane which promise many interesting novel applications; the same is true for ...
Henning Hopf, Vitaly Raev, Peter G. Jones   +2 more
doaj   +1 more source