Fulgides for Memories and Switches

Yokoyama, Yasushi

doi:10.1021/cr980070c

Cited by 819 publications

(606 citation statements)

References 173 publications

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“…1). Many of the well-known photochromic systems that rely on this strategy tend to follow electrocyclic ring closing/opening reactions, with spiropyrans [21], fulgides [22], and diarylethenes [23] being some of the more prominent. Dithienylethenes (DTEs) in particular are used in applications such as self-tinting ophthalmic lenses and memory devices [24].…”

Section: Introductionmentioning

confidence: 99%

Isomerization and rearrangement of boriranes: from chemical rarities to functional materials

Mellerup

Wang

2018

Sci. China Mater.

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Stimuli responsive materials have recently been the subject of tremendous research efforts owing to their numerous potential applications. Although there currently exist many different types of "smart" materials, those based on photoresponsive transformations are especially attractive. In this review, we focus on a relatively new class of photochromic molecules based on the photochemistry of chelate organoborates, which form intensely colored, base-stabilized boriranes. Recent efforts to exploit the reactivity of these systems are summarized, and future prospects in materials science discussed.

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Section: Introductionmentioning

confidence: 99%

Isomerization and rearrangement of boriranes: from chemical rarities to functional materials

Mellerup

Wang

2018

Sci. China Mater.

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“…Finally, DAE and fulgides/fulgimides show potential for applications in biological research (Figure 1d) (Chen et al 2011;Fujimoto et al 2012). These hexatriene compounds undergo light-induced and reversible electrocyclic ring closure and opening (Irie 2000;Yokoyama 2000). While the ring closing requires UV light the opening can be triggered by visible light.…”

Section: Synthetic Photochromes For Biological Researchmentioning

confidence: 99%

Flipping the Photoswitch: Ion Channels Under Light Control

McKenzie

Sánchez-Romero

Janovjak

2015

Advances in Experimental Medicine and Biology

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Nature has incorporated small photochromic molecules, colloquially termed 'photoswitches', in photoreceptor proteins to sense optical cues in phototaxis and vision. While Nature's ability to employ light-responsive functionalities has long been recognized, it was not until recently that scientists designed, synthesized and applied synthetic photochromes to manipulate biological processes with the temporal and spatial resolution of light. Ion channels in particular have come to the forefront of proteins that can be put under the designer control of synthetic photochromes.Photochromic ion channel controllers are comprised of three classes, photochromic soluble ligands (PCLs), photochromic tethered ligands (PTLs) and photochromic crosslinkers (PXs), and in each class ion channel functionality is controlled through reversible changes in photochrome structure. By acting as light-dependent ion channel agonists, antagonist or modulators, photochromic controllers effectively converted a wide range of ion channels, including voltage-gated ion channels, 'leak channels', tri-, tetra-and pentameric ligand-gated ion channels, and temperaturesensitive ion channels, into man-made photoreceptors. Control by photochromes is reversible, unlike in the case of 'caged' compounds, and non-invasive with high spatial precision, unlike pharmacology and electrical manipulation. Here, we introduce design principles of emerging photochromic molecules that act on ion channels and discuss the impact that these molecules are beginning to have on ion channel biophysics and neuronal physiology.

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“…On the other hand, pericyclic reactions involve the ring opening and closing in the molecule. Spiropyrans [31], diarylethenes [32], and fulgides [33] are members of this category.…”

Section: Scheme 2 Dendritic Two-photon Absorbing Moleculesmentioning

confidence: 99%

Two-Photon Absorbing Molecules as Potential Materials for 3D Optical Memory

Ogawa

2014

Applied Sciences

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Abstract:In this review, recent advances in two-photon absorbing photochromic molecules, as potential materials for 3D optical memory, are presented. The investigations introduced in this review indicate that 3D data storage processing at the molecular level is possible. As 3D memory using two-photon absorption allows advantages over existing systems, the use of two-photon absorbing photochromic molecules is preferable. Although there are some photochromic molecules with good properties for memory, in most cases, the two-photon absorption efficiency is not high. Photochromic molecules with high two-photon absorption efficiency are desired. Recently, molecules having much larger two-photon absorption cross sections over 10,000 GM (GM= 10 ) have been discovered and are expected to open the way to realize two-photon absorption 3D data storage.

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Fulgides for Memories and Switches

Cited by 819 publications

References 173 publications

Isomerization and rearrangement of boriranes: from chemical rarities to functional materials

Isomerization and rearrangement of boriranes: from chemical rarities to functional materials

Flipping the Photoswitch: Ion Channels Under Light Control

Two-Photon Absorbing Molecules as Potential Materials for 3D Optical Memory

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