Results 31 to 40 of about 2,979 (191)
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 +3 more
core +1 more source
The Synthesis and Spectral Properties of Merocyanine Dyes Based on 9H‑Fluorene-2,7-Dicarbonitrile
Журнал органічної та фармацевтичної хіміїDi-, tetra-, and hexamethine merocyanine dyes bearing donor heterocyclic end groups of different electron-donating abilities and the 9H-fluorene-2,7-dicarbonitrile moiety as the acceptor end group have been synthesized.
Iryna V. Kurdiukova +2 more
doaj +1 more source
Neue Versuche mit Spiropyran: Photometrie, NMR‐Spektroskopie und On‐Water‐Synthese
CHEMKON, EarlyView.Reaktionskinetik wird häufig als schwierig, theoretisch und Mathematik‐lastig empfunden, weshalb experimentelle Zugänge für diesem Themenbereich notwendig sind. In diesem Beitrag werden entsprechende Versuche zur Reaktionskinetik vorgestellt, bei denen das Farbstoffsystem eines Spiropyrans und dessen isomerer Merocyanin‐Form untersucht wird.
Marcel Emmert +2 more
wiley +1 more source
Molecular First Hyperpolarizabilities of a New Class of Asymmetric Squaraine Dyes [PDF]
, 1994 The molecular first hyperpolarizabilities (β) of a series of asymmetric squaraine dyes have been measured by electric-field-induced second harmonic generation; the dyes have negative β-values whose magnitudes are comparable to 4-N,N-dimethylamino-4 ...
Chen, Chin-Ti +2 more
core +1 more source
Photochromic carbazole photoinitiators for precision visible‐light photopolymerization
Polymer International, EarlyView.New carbazole–naphthopyran derivatives were employed as visible‐light‐activated photoinitiators, enabling rapid and localized radical photopolymerization to produce well‐defined thin solid objects within minutes. Abstract Two carbazole derivatives, each incorporating a naphthopyran unit and an aromatic ketone, were synthesized and evaluated as ...
Mauro Magalhães +3 more
wiley +1 more source
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
Practical Broad-Band Tuning of Dye Lasers by Solvent Shifting [PDF]
, 1986 We have operated a dye laser over a broad wavelength range (593.8-667.0nm) by shifting the dye emission profile with incremental changes of solvent composition. This was accomplished with the laser operating continuously, and only minor adjustment of the
Bird, George R. +3 more
core +1 more source
SmartBot, EarlyView.Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao +5 more
wiley +1 more source
Textiles screen-printed with photochromic ethyl cellulose-spirooxazine composite nanoparticles [PDF]
, 2013 Photochromic compounds change colour on exposure to light, while the reversion may be attributable either to radiation or may be thermal. The use of photochromism on fabrics can provide new opportunities to develop smart textiles; for example, sensors ...
Feczkó, Tivadar +2 more
core +1 more source
Smart Molecules, EarlyView.A groundbreaking dual‐donor crosslinking strategy was reported to significantly enhance the thermal stability, achieving remarkable EO coefficients (257–301 pm/V), glass transition temperatures (Tg) ranging from 107–187°C, and ultrahigh chromophore densities (3.73–4.26 × 10²⁰ molecules/cm³) with exceptional long‐term stability after 500 h at 85°C ...
Yu Zhang +7 more
wiley +1 more source