Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film

Albert, A.; Fried, Martina; Thelakkat, Mukundan; Köhler, Jürgen

doi:10.1039/d2cp05062e

Cited by 2 publications

(3 citation statements)

References 44 publications

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“…52 Koḧler and co-workers recently reported a study on photoswitchable molecules derived from the diarylethene group as shown in Figure 4b. 50 Such molecules undergo center ring-closing and ring-opening reactions upon illumination with 325 or 420 nm light. The ring reconfiguration changes lead to changes in both the absorption and emission spectra of the molecules.…”

Section: ■ Single Nanoparticle Epdmentioning

confidence: 99%

Section: Applications and Directionsmentioning

confidence: 99%

“…Their robustness offers significant cost and scaleability advantages over DNA scaffolds . Köhler and co-workers recently reported a study on photoswitchable molecules derived from the diarylethene group as shown in Figure b . Such molecules undergo center ring-closing and ring-opening reactions upon illumination with 325 or 420 nm light.…”

Section: Applications and Directionsmentioning

confidence: 99%

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The controlled assembly of colloid particles on a solid substrate has always been a major challenge in colloid and surface science. Here we provide an overview of electrophoretic deposition (EPD) of single charge-stabilized nanoparticles. We demonstrate that surface templated EPD (STEPD) assembly, which combines EPD with top-down nanofabrication, allows a wide range of nanoparticles to be built up into arbitrary structures with high speed, scalability, and excellent fidelity. We will also discuss some of the current colloid chemical limitations and challenges in STEPD assembly for sub-10 nm nanoparticles and for the fabrication of densely packed single particle arrays.

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confidence: 99%

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Electrophoretic Deposition of Single Nanoparticles

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et al. 2024

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Purely Optical, Reversible, Read‐Write‐Erase Cycling Using Photoswitchable Beads in Micropatterned Arrays

Zhang,

Dharpure,

Philipp

et al. 2024

Advanced Optical Materials

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Using surface‐templated electrophoretic deposition, arrays of polymer beads (photonic units) incorporating photo‐switchable DAE molecules are created, which can be reversibly and individually switched between high and low emission states by direct photo‐excitation, without any energy or electron transfer processes within the molecular system. The micropatterned array of these photonic units is spectroscopically characterized in detail and optimized with respect to both signal contrast and cross‐talk. The optimum optical parameters including laser intensity, wavelength and duration of irradiation are elucidated and ideal conditions for creating reversible on/off cycles in a micropatterned array are determined. 500 such cycles are demonstrated with no obvious on/off contrast attenuation. The ability to process binary information is demonstrated by selectively writing information to the given photonic unit, reading the resultant emissive signal pattern and finally erasing the information again, which in turn demonstrates the possibility of continuous recording. This basic study paves the way for building complex circuits using spatially well‐arranged photonic units.

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Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film

Abstract: Since decades photochromic molecules have attracted attention for their potential of using light as external stimulus to change their photophysical properties. Here we report the spectroscopic characterization of two emissive...

Cited by 2 publications

References 44 publications

Electrophoretic Deposition of Single Nanoparticles

Electrophoretic Deposition of Single Nanoparticles

Purely Optical, Reversible, Read‐Write‐Erase Cycling Using Photoswitchable Beads in Micropatterned Arrays

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