Photochemical switching of luminescence and singlet oxygen generation by chemical signal communication

Silvi, Serena; Constable, Edwin C.; Housecroft, Catherine E.; Beves, Jonathon E.; Dunphy, Emma L.; Tomasulo, Massimiliano; Raymo, Françisco M.; Credi, Alberto

doi:10.1039/b900712a

Cited by 66 publications

(54 citation statements)

References 25 publications

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“…This is fluorescence 'off-on-off' action driven by a light dose input. [47][48][49][50] In binary logic terms, this is XOR logic, 10,11 while it also has a ternary logic meaning.…”

Section: Resultsmentioning

confidence: 99%

Fluorescent logic systems for sensing and molecular computation: structure–activity relationships in edge-detection

et al. 2015

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Molecular logic-based computation continues to throw up new applications in sensing and switching, the newest of which is the edge detection of objects. The scope of this phenomenon is mapped out by the use of structure-activity relationships, where several structures of the molecules and of the objects are examined. The different angles and curvatures of the objects are followed with good-fidelity in the 10 visualized edges, even when the objects are in reverse video.

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“…This is fluorescence 'off-on-off' action driven by a light dose input. [47][48][49][50] In binary logic terms, this is XOR logic, 10,11 while it also has a ternary logic meaning.…”

Section: Resultsmentioning

confidence: 99%

Fluorescent logic systems for sensing and molecular computation: structure–activity relationships in edge-detection

et al. 2015

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“…Figure 2b shows that 1 is largely preserved during irradiation, whereas 2 is significantly decomposed (into 3 and H + ). 46 It is worth reiterating that the irradiated areas are understood to show XOR logic using light dose inputs [40][41][42] and fluorescence output. On the other hand, no logic assignment can be made in a similar manner to the visualized edges themselves or to the unirradiated areas since the light dose is not supplied directly to those places.…”

Section: Supporting Information Placeholdermentioning

confidence: 99%

Building pH Sensors into Paper-Based Small-Molecular Logic Systems for Very Simple Detection of Edges of Objects

Ling¹,

Naren

Kelly³

et al. 2015

J. Am. Chem. Soc.

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Genetically engineered bacteria and reactive DNA networks detect edges of objects, as done in our retinas and as also found within computer vision. We now demonstrate that simple molecular logic systems (a combination of a pH sensor, a photo acid generator, and a pH buffer spread on paper) without any organization can achieve this relatively complex computational goal with good fidelity. This causes a jump in the complexity achievable by molecular logic-based computation and extends its applicability. The molecular species involved in light dose-driven "off−on−off" fluorescence is diverted in the "on" state by proton diffusion from irradiated to unirradiated regions where it escapes a strong quencher, thus visualizing the edge of a mask.

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“…The XNOR function can be performed by reconfiguring the monitored emission wavelength to 626 nm (Out 2 ). The same approach was employed to control the luminescence of the Os(II) analog of 6 2+ and the photoinduced generation of singlet oxygen [48].…”

Section: All-optical Integrated Logic Operations Based On Communicatimentioning

confidence: 99%

Binary Logic with Synthetic Molecular and Supramolecular Species

Semeraro

Baroncini

2012

Molecular and Supramolecular Information Processing

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Photochemical switching of luminescence and singlet oxygen generation by chemical signal communication

Abstract: Photoluminescence in the far red spectral region and photosensitised generation of singlet oxygen, with associated near-IR emission, are reversibly controlled by near-UV or violet light in a communicating ensemble of molecular switches.

Cited by 66 publications

References 25 publications

Fluorescent logic systems for sensing and molecular computation: structure–activity relationships in edge-detection

Fluorescent logic systems for sensing and molecular computation: structure–activity relationships in edge-detection

Building pH Sensors into Paper-Based Small-Molecular Logic Systems for Very Simple Detection of Edges of Objects

Binary Logic with Synthetic Molecular and Supramolecular Species

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