Results 71 to 80 of about 5,917 (220)

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

, 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  

Transient absorption spectroscopy on spiropyran monolayers using nanosecond pump–probe Brewster angle reflectometry [PDF]

, 2013
Self-assembled monolayers of 11-(3’,3’-dimethyl-6,8-dinitrospiro[chromene-2,2’-indoline]-1’-yl) undecanoic acid (amphiphilic spiropyran) at the air–water interface are studied using Brewster angle reflectometry.
Aarts, Aznar, Balashev, Bernhard Siebenhofer, Bletz, Bohne, Christoph Nowak, Gabor, Gorelik, Gorelik, Henon, Hobley, Hobley, Hobley, Hobley, Hobley, Hobley, Hong Yan Song, Horii, Hönig, Hönig, Jonathan Hobley, Katz, Kawai, Kim, Liptay, Martin J. Lear, Matsumoto, Mecheri, Mo, Mo, Muir, Reeves, Rosario, Sasaki, Sergey Gorelik, Siebenhofer, Tachibana, Tamai, Wang, Yamashita   +40 more
core   +1 more source

Synthesis and Acid-Responsiveness of an Insulated π-Conjugated Polymer Containing Spiropyrans in Its Backbone

Molecules, 2019
A π-conjugated polymer containing spiropyrans (SPs), which could be almost completely converted to protonated merocyanines (MCH+) and back to the SP form by adding an acid and a base, respectively, was developed.
Hiromichi V. Miyagishi, Takashi Tamaki, Hiroshi Masai, Jun Terao   +3 more
doaj   +1 more source

Electro- and photo- chromism of hybrid conducting polymers [PDF]

, 2010
Polythiophenes are an important representative class of conjugated polymers that form some of the most environmentally and thermally stable materials that can be used as electrical conductors, nonlinear optical devices, polymer LEDs, electrochromic ...
Byrne, Robert, Diamond, Dermot, Zanoni, Michele   +2 more
core  

Bottom‐up Strategies for Generating Polymer Protocells That Mimic Cellular Communication

Chemistry – A European Journal, EarlyView.
This review focuses on polymeric protocells produced using a bottom‐up approach. Polymer‐based assemblies guarantee stability and designability by adjusting the properties of the amphiphilic copolymers used. The review covers protocell architectures, production, and their intra‐ and intercellular communication mechanisms.
Gloria Saorin, Xinan Huang, Voichita Mihali, Cornelia G. Palivan   +3 more
wiley   +1 more source

Crystal structure determination as part of an undergraduate laboratory experiment: 1′,3′,3′-trimethylspiro[chromene-2,2′-indoline] and 1′,3′,3′-trimethyl-4-[(E)-(1,3,3-trimethylindolin-2-ylidene)methyl]spiro[chroman-2,2′-indoline]

Acta Crystallographica Section E: Crystallographic Communications, 2016
The crystal structures of the title compounds, C19H19NO and C31H34N2O, were determined as part of an experiment in an undergraduate teaching laboratory that demonstrates the relationship between molecular structure and function.
Joseph O. S. Beckett, Marilyn M. Olmstead, James C. Fettinger, David A. Gray, Shuhei Manabe, Mark Mascal   +5 more
doaj   +1 more source

Investigating nano-structured domains within ionic liquids: the effect of cation change on thermal equilibrium and relaxation of spiropyran and spirooxazine. [PDF]

, 2009
The established belief that ionic liquids (ILs) behave as homogenous solvents such as that observed in molecular solvents has been challenged.1, 2 Previous use of solvatochromic probe dyes has allowed for the traditional parameter of ‘polarity’ to be ...
Byrne, Robert, Coleman, Simon, Minkovska, Stela   +2 more
core  

Photoswitched DNA-Binding of a Photochromic Spiropyran [PDF]

Journal of the American Chemical Society, 2008
The dramatically different DNA-binding properties of the two isomeric forms of a photochromic spiropyran have been demonstrated, enabling photoswitched DNA binding. The closed, UV-absorbing form shows no signs of interaction with DNA. Upon UV exposure the spiropyran is isomerized to the open form that binds to DNA by intercalation. The process is fully
Andersson, Johanna, Li, Shiming, Lincoln, Per, Andréasson, Joakim   +3 more
openaire   +2 more sources

Reprogrammable All‐Photonic Molecular Logic With Ln3+ Luminescent Hybrids in Solid State

Laser &Photonics Reviews, EarlyView.
Mario P. de‐Saralegui et al. report an Eu3⁺/Tb3⁺‐doped organic–inorganic hybrid material that enables multiple reprogrammable logic operations using only physical stimuli. Additionally, this solid‐state, all‐photonic platform represents the first example in the literature performing reversible Feynman logic operations, marking a major step toward ...
Mario P. de‐Saralegui, Lianshe Fu, Albano N. Carneiro Neto, Carlos D. S. Brites, Miguel A. Hernández‐Rodríguez   +4 more
wiley   +1 more source

Tracking photophysical relaxation in spiropyran with simulated time-resolved X-ray absorption spectroscopy

Communications Physics
Spiropyran is a prototype photoswitch that undergoes photoinduced ring-opening via C-O bond fission. The quantum yield for this photochemical reaction is low, with photophysical relaxation being the dominant process.
Lina Fransén, Benjamin Roux, Sonia Coriani, Saikat Nandi, Morgane Vacher   +4 more
doaj   +1 more source