Results 61 to 70 of about 5,917 (220)

Stimuli‐Responsive Supramolecular Biomaterials for Cancer Theranostics

Advanced Science, EarlyView.
The ultimate goal of cancer theranostics is to get imaging agents and therapeutic cargo to tumor sites when and where they are required. “Smart” systems should be developed. This review discusses the characteristics of physiological stimuli, types and action modes of external stimuli, construction approaches and working principles, as well as ...
Wenting Hu, Binglin Ye, Guocan Yu, Feihe Huang, Zhengwei Mao   +4 more
wiley   +1 more source

Electrochromic properties of spiropyran-terthiophene adaptive polymers [PDF]

, 2010
Adaptive materials have the ability to modify their behaviour or characteristics in response to external stimuli, for example through electrochemical changes, macroscopically in the molecular structure. These materials may have only one form with binding
Byrne, Robert, Diamond, Dermot, Zanoni, Michele   +2 more
core  

Reversible, Opto-Mechanically Induced Spin-Switching in a Nanoribbon-Spiropyran Hybrid Material

, 2012
It has recently been shown that electronic transport in zigzag graphene nanoribbons becomes spin-polarized upon application of an electric field across the nanoribbon width.
Ansari, Bryan M. Wong, Cervantes-Sodi, Civalleri, Cruz-Silva, Day, Day, Dey, Duan, Fujita, Giannozzi, Greg O'Bryan, Grimme, Guo, Gütlich, Hafner, Hirjibehedin, Huang, Jung, Kan, Katsnelson, Kergueris, Kornobis, Lee, Lee, Leuenberger, Ma, Nguyen, Noda, O'Bryan, Perdew, Rocha, Rodriguez, Rodriguez, Simon H. Ye, Son, Star, Tao, van Ruitenbeek, Wang, Wolf, Wong, Wong, Wong, Wong, Wong, Wong, Wong, Wong, Zheng, Zhou   +50 more
core   +1 more source

Spiropyran polymeric microcapillary coatings for photodetection of solvent polarity [PDF]

, 2013
Fused silica micro-capillaries were functionalised with spiropyran-polymer brushes using surface-initiated ring-opening metathesis polymerisation. Based on the inherited spiropyran properties, the functionalised capillaries were successfully used to ...
Benito-Lopez, Fernando, Diamond, Dermot, Florea, Larisa, McKeon, Aoife   +3 more
core   +1 more source

Visualizing and Quantifying Impact with Mechanochromic Sensing Paints Based on Self‐Assembled Polydiacetylene‐Silk Core‐Shell Vesicles

Advanced Science, EarlyView.
Tracking physical impacts is important in many fields. Self‐assembled microparticles made from polydiacetylene and silk fibroin that change color from blue to red when hit can provide an alternative approach to traditional mechanical transducers, quantitatively visualizing impact with responses ranging from <100 to 770 N.
Marco Lo Presti, Giulia Guidetti, Elisabetta Ruggeri, Terri Lyne Carrington, Fiorenzo G. Omenetto   +4 more
wiley   +1 more source

SYNTHESIS AND STUDY OF THE PHOTOCHROMIC BEHAVIOR OF SUBSTITUTED 6'-NITRO-1,3,3-TRIMETHYL-5-VINYLSPIRO(INDOLINO-2,2'-[2H]CHROMENES)

Тонкие химические технологии, 2013
Few 5-vinyl substituted 6’-nitro-1,3,3-trimethylspiro(indolino-2,2’-[2H]chromenes) (6’-nitro-spiropyrans) were synthesized by a one-step method from 5-formyl precursor – 5-formyl-6’-nitro-1,3,3-trimethylspiro(indolino-2,2’- [2H]chromene) (1).
A. V. Laptev, A. Yu. Lukin, N. V. Belikov, O. V. Demina, S. D. Varfolomeev, V. A. Barachevsky, A. A. Khodonov, V. I. Shvets   +7 more
doaj  

Excited State Proton Transfers in Hybrid Compound Based on Indoline Spiropyran of the Coumarin Type and Azomethinocoumarin in the Presence of Metal Ions

Molecules, 2021
Spectral-luminescence properties of a hybrid compound containing a coumarin-type spiropyran and an azomethinocoumarin fragment in toluene-acetonitrile solution in the presence of Li+, Ca2+, Zn2+ and Mg2+ ions are reported.
Natalia L. Zaichenko, Tatyana M. Valova, Olga V. Venidiktova, Alexander V. Lyubimov, Andrey I. Shienok, Liubov S. Koltsova, Anton O. Ayt, Galina V. Lyubimova, Leonid D. Popov, Valery A. Barachevsky   +9 more
doaj   +1 more source

Spiropyran modified microfluidic chip channels for photonically controlled sensor array detection of metal ions [PDF]

, 2008
Microfluidic chips are particularly attractive for analytical purposes because they provide a convenient small platform for rapid analysis and detection.1 Furthermore, spiropyrans dyes can be used as photonically controlled, self-indicating molecular ...
Benito-Lopez, Fernando, Diamond, Dermot, Macka, Mirek, Paull, Brett, Scarmagnani, Silvia, Walsh, Zarah   +5 more
core  

Spiropyran Meets Guanine Quadruplexes: Isomerization Mechanism and DNA Binding Modes of Quinolizidine‐Substituted Spiropyran Probes

Chemistry – A European Journal, 2020
AbstractThe recent delivery of a fluorescent quinolizidine‐substituted spiropyran, which is able to switch in vivo and bind to guanine quadruplexes (G4) at physiological pH values, urged us to elucidate its molecular switching and binding mechanism. Combining multiscale dynamical studies and accurate quantum chemical calculations, we show that, both in
Avagliano, Davide, Sánchez‐Murcia, Pedro A., González, Leticia   +2 more
openaire   +2 more sources

Spiropyran-Modified Cellulose for Dual Solvent and Acid/Base Vapor Sensing

Chemosensors
Stimuli-responsive materials based on renewable biopolymers are highly attractive for developing sustainable chemical sensors. Here, two spiropyran derivatives (SP1 and SP2) were synthesized and covalently grafted onto cellulose, yielding the functional ...
Daniel D. S. de Sá, João P. C. Trigueiro, Luiz F. C. de Oliveira, Hernane S. Barud, Frank Alexis, Roberto S. Nobuyasu, Flávio B. Miguez, Frederico B. De Sousa   +7 more
doaj   +1 more source