Results 71 to 80 of about 6,070 (236)
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
Spiropyran modified PDMS micro-fluidic chip device for photonically controlled sensor array detection of metal ions [PDF]
, 2009 Micro‐fluidic chips are particularly attractive in biological and life sciences for analytical purposes because they provide a convenient small platform for rapid analysis and detection [1].
Benito-Lopez, Fernando +5 more
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Crowned spiropyran fluoroionophores with a carboxyl moiety for the selective detection of lithium ions [PDF]
, 2016 The absorbance and fluorescence spectra of carboxylated spiropyrans containing methyl-1-aza-12-crown-4, methyl-1-aza-15-crown-5, methyl-1-aza-18-crown-6 moieties are compared.
Abell, A.D., Heng, S., Stubing, D.B.
core +1 more source
Eliminating Fatigue in Surface-Bound Spiropyrans [PDF]
The Journal of Physical Chemistry C, 2019 This paper describes an experimental approach to eliminating the loss of reversibility that surface-bound spiropyrans exhibit when switched with light. Although such fatigue can be controlled in other contexts, on surfaces, the photochromic compounds are held in close proximity to each other and relatively few molecules modulate the properties of a ...
Sumit Kumar +7 more
openaire +3 more sources
Responsive Materials, EarlyView.This Perspective discusses the potential of stimuli‐responsive liquid crystal polymer bio‐interfaces in modulating cell behavior as next generation dynamic artificial scaffolds. Unlike current artificial biomaterials that have static properties, LCPs offer fast, reversible, and spatially programmable deformation that reflects the dynamic properties of ...
Ruth M. C. Verbroekken +2 more
wiley +1 more source
Molecules, 2017 Studies on the following were reviewed: (1) the structure of spiropyrans and spirooxazines (two kinds of spiro compounds) under external stimuli and (2) the construction and applications of composite systems based on fluorescence resonance energy ...
Hongyan Xia, Kang Xie, Gang Zou
doaj +1 more source
A pyrene-appended spiropyran for selective photo-switchable binding of Zn(II): UV-visible and fluorescence spectroscopy studies of binding and non-covalent attachment to graphene, graphene oxide and carbon nanotubes [PDF]
, 2015 PublishedArticleSynthesis of photo-switchable, Zn2+ sensitive hybrid materials was achieved by facile non-covalent functionalization of graphene, graphene oxide and carbon nanotubes with a pyrene-appended spiropyran. Solution phase binding studies, using
Green, Stephen J. +4 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
Communications PhysicsSpiropyran 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 +4 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 +2 more
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