Results 51 to 60 of about 31,710 (279)

Discovery and Photoisomerization of New Pyrrolosesquiterpenoids Glaciapyrroles D and E, from Deep-Sea Sediment Streptomyces sp.

Marine Drugs, 2022
Two new pyrrolosesquiterpenes, glaciapyrroles D (1) and E (2) were discovered along with the previously reported glaciapyrrole A (3) from Streptomyces sp. GGS53 strain isolated from deep-sea sediment.
Keebeom Ko, Seong-Hwan Kim, Subin Park, Hwa Seung Han, Jae Kyun Lee, Jin Wook Cha, Sunghoon Hwang, Ki Young Choi, Yoon-Jae Song, Sang-Jip Nam, Jongheon Shin, Seung-Il Nam, Hak Cheol Kwon, Jin-Soo Park, Dong-Chan Oh   +14 more
doaj   +1 more source

Semiclassical model of ultrafast photoisomerization reactions

, 2005
In this letter we propose a model which explains ultrafast and efficient photoisomerization reactions as driven by transitions between quasistationary states of one dimensional (1D) double well potential of an excited electronic state.
Ben-Nun, Ben-Nun, Ben-Nun, Benderskii, Benderskii, Benderskii, Carrington, Dürr, E.I. Kats, E.V. Vetoshkin, Ern, Fleming, Fuss, Gai, Gallo, H.P. Trommsdorff, Heading, Köppel, Köppel, Landau, Lednev, Lochbrunner, Logunov, Manthe, Michl, Mukamel, Salem, Song, V.A. Benderskii   +28 more
core   +1 more source

Controlled rotary motion of light-driven molecular motors assembled on a gold film [PDF]

, 2010
Using circular dichroism (CD) spectroscopy, we show that light-driven rotary molecular motors based on overcrowded alkenes can function in a self-assembled monolayer on semi-transparent gold films.
Adams, Akimov, Andrew, Areephong, Baber, Ball, Balzani, Balzani, Browne, Clarke, de Jonge, Dimilla, Doron-Mor, Dulic, Dulkeith, Eelkema, Evans, Feringa, Fletcher, Fournier-Bidoz, Gao, Gould, Haidekker, Horansky, Horansky, Hugel, Imahori, Keegan, Khatua, Koumura, Koumura, Kudernac, Leigh, London, Love, Maksymovych, Manna, Michl, Nuckolls, Pollard, Pollard, Pollard, Quina, Rozenbaum, Shirai, Stranick, Thomas, Ulman, van Delden, Wanunu, Winston, Zheng   +51 more
core   +3 more sources

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Synthesis, Photoisomerization, Antioxidant Activity, and Lipid-Lowering Effect of Ferulic Acid and Feruloyl Amides

Molecules, 2020
The Ugi four-component reaction employing naturally occurred ferulic acid (FA) is proposed as a convenient method to synthesize feruloyl tertiary amides.
Chiara Lambruschini, Ilaria Demori, Zeinab El Rashed, Leila Rovegno, Elena Canessa, Katia Cortese, Elena Grasselli, Lisa Moni   +7 more
doaj   +1 more source

An optically activated cantilever using photomechanical effects in dye-doped polymer fibers

, 2005
We report on what we believe is the first demonstration of an optically activated cantilever due to photomechanical effects in a dye-doped polymer optical fiber. The fiber is observed to bend when light is launched off-axis.
Athanassiou, Bian, Camacho-Lopez, de Gennes, Dirk Robinson, Dumont, Eisenbach, Finkelmann, Jiang, Kim, Lendlein, Li, Mark G. Kuzyk, Merian, Sekkat, Sekkat, Shaoping Bian, Todorov, Warner, Welker, Welker, Welker, Welker, Welker, Yu   +24 more
core   +1 more source

A computational study of photoisomerization in Al3O3- ­clusters [PDF]

, 2002
Ab initio calculations are employed to understand the photoisomerization process in small Al3O3- clusters. This process is the first example of a photoinduced isomerization observed in an anion cluster gas-phase system.
Cui, XY, Han, JG, Morrison, I
core   +1 more source

Light‐Controlled Reversible Coassembly of Hybrid Functional Nanostructures

Advanced Functional Materials, EarlyView.
Light‐responsive hybrid nanostructures are formed by coassembling azobenzene‐ and PAH‐functionalized nanoparticles through reversible an tunable π interactions. The system enables tunable coupling between distinct components such as gold and magnetite or carbon nanotubes, producing switchable optical and magnetic properties under light and magnetic ...
Michal Sawczyk, Yanxiao Han, Soumyo Sen, Bartosz Smereczyński, Petr Král, Michał M. Wójcik   +5 more
wiley   +1 more source

Unusual Reactivities of ortho-Hydroxy-β-nitrostyrene

Molecules, 2022
Nitrostyrene derivatives are widely used in organic syntheses as a substrate for Michael addition, photoisomerization and cycloaddition. In contrast, ortho-hydroxy derivatives exhibit unusual behaviors in these reactions.
Kento Iwai, Khimiya Wada, Nagatoshi Nishiwaki   +2 more
doaj   +1 more source

Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]

, 2016
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D., Porco, John A., Stephenson, Corey R.J.   +2 more
core   +2 more sources