Highly Fluorescent and Photochromic Diarylethene Oligomer Bridged by <i>p</i>-Phenylenevinylene

Cho, Hyunil; Kim, Eunkyoung

doi:10.1021/ma025576i

Cited by 115 publications

(77 citation statements)

References 24 publications

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“…Evidently, fluorescence switching is more promising than photochromism in all-optical switches and transistors [7][8][9] . A great deal of efforts have been taken to develop novel photoswitchable fluorescent DTE derivatives with high fluorescence quantum yields (F F ), on/off ratios and switching speeds [10][11][12][13][14][15][16] . However, the performance of photoswitchable fluorescent DTEs is far from satisfactory owing to the scarcity of high-speed switching capability and large fluorescence on/off ratio.…”

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confidence: 99%

A trident dithienylethene-perylenemonoimide dyad with super fluorescence switching speed and ratio

et al. 2014

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Photoswitchable fluorescent diarylethenes are promising in molecular optical memory and photonic devices. However, the performance of current diarylethenes is far from satisfactory because of the scarcity of high-speed switching capability and large fluorescence on-off ratio. Here we report a trident perylenemonoimide dyad modified by triple dithienylethenes whose photochromic fluorescence quenching ratio at the photostationary state exceeds 10,000 and the fluorescence quenching efficiency is close to 100% within seconds of ultraviolet irradiation. The highly sensitive fluorescence on/off switching of the trident dyad enables recyclable fluorescence patterning and all-optical transistors. The prototype optical device based on the trident dyad enables the optical switching of incident light and conversion from incident light wavelength to transmitted light wavelength, which is all-optically controlled, reversible and wavelength-convertible. In addition, the trident dyad-staining block copolymer vesicles are observed via optical nanoimaging with a sub-100 nm resolution, portending a potential prospect of the dithienylethene dyad in super-resolution imaging.

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confidence: 99%

A trident dithienylethene-perylenemonoimide dyad with super fluorescence switching speed and ratio

et al. 2014

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“…[7,8] When one of the two states is fluorescent, the photoinduced transformation of the photochromic components within these polymeric assemblies results in the modulation of the emission intensity. [77,78] Alternatively, independent fluorescent and photochromic components can be integrated within [79][80][81] or appended to [82] the main chain of a polymer backbone. Similarly, several photochromes can be attached to a single fluorescent polymer [83,84] or a fluorophore can first be connected to a photochrome and then multiple copies of the resulting dyad can be attached to a macromolecular chain.…”

Section: Polymersmentioning

confidence: 99%

Fluorescent Switches Based on Photochromic Compounds

2009

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The photochemical transformations associated with photochromic compounds can be exploited to switch the emission of complementary fluorophores under the influence of optical stimulations. Specifically, fluorescent and photochromic components can be integrated within the same molecular or supramolecular assembly and the significant changes in the stereoelectronic properties associated with the photoinduced interconversion of one component can be designed to modulate the emission intensity and/or wavelength of the other. In particular, the modifications in absorption properties, conjugation, dipole moment, redox potentials and shape of a photochrome can all be transduced effectively into reversible alterations of the emissive behavior of a fluorophore. Furthermore, some of these ingenious mechanisms for fluorescence 1. Photochromism History and DefinitionsThe term "photochromism" was introduced in the early 1950s to indicate the photoinduced and reversible change in color of certain compounds.[1] Since then, the number of publications on photochromism has increased exponentially [a]

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“…[34] The copolymer was synthesized by a Wittig polycondensation method and consists of five alternating pairs of polyphenylenevinylene (PPV) and DTE units (Figure 7). This polymer architecture also seems to favour the antiparallel conformation.…”

Section: Main-chain Dte Polymersmentioning

confidence: 99%

High‐Content Photochromic Polymers Based on Dithienylethenes

2005

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Dithienylethenes (DTEs) are one of the most promising classes of photochromic compounds for use in optoelectronic devices such as waveguides, memory media and sensors. The development of DTE based polymers that contain a high mass-content of the photoactive DTE component, that maintain their photochromic activity in the solid-state and that are easily processed into thin-films under a variety of conditions is critical for the implementation of the materials into useful applications. This Microreview provides an overview of the

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Highly Fluorescent and Photochromic Diarylethene Oligomer Bridged by p-Phenylenevinylene

Cited by 115 publications

References 24 publications

A trident dithienylethene-perylenemonoimide dyad with super fluorescence switching speed and ratio

A trident dithienylethene-perylenemonoimide dyad with super fluorescence switching speed and ratio

Fluorescent Switches Based on Photochromic Compounds

High‐Content Photochromic Polymers Based on Dithienylethenes

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