Supramolecular fluorescent probes for the detection of mixed alkali metal ions that mimic the function of integrated logic gates

Xu, Heming; Xu, Xiaohe; Dabestani, Reza; Brown, Gilbert M.; Fan, Lin; Patton, Stephen R.; Ji, Hai‐Feng

doi:10.1039/b107935m

Cited by 37 publications

(25 citation statements)

References 40 publications

(29 reference statements)

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“…An analogous case involving Na + instead of Cs + is also available. [71] Raymo and Giordani report another 3-input approach to equally complex logic arrays. Their systems rely on the wellknown spiropyran photochromic 2, [26] showing an additional state 27 in the presence of H + .…”

Section: Integrated Molecular Logicmentioning

confidence: 98%

Molecular‐Scale Logic Gates

Silva

McClenaghan

2004

Chemistry A European J

592

240

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Currently available approaches to molecular-scale logic gates are summarized and compared. These include: chemically-controlled fluorescent and transmittance-based switches concerned with small molecules, DNA oligonucleotides with fluorescence readout, oligonucleotide reactions with DNA-based catalysts, chemically-gated photochromics, reversibly denaturable proteins, molecular machines with optical and electronic signals, two-photon fluorophores and multichromophoric transient optical switches. The photochemical principles of electron and energy transfer are involved in several of these approaches. More complex molecular logic systems with reconfigurability and superposability provide contrasts with current semiconductor electronics. Integration of simple logic functions to produce more complex ones is also discussed in terms of recent developments.

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Section: Integrated Molecular Logicmentioning

confidence: 98%

Molecular‐Scale Logic Gates

Silva

McClenaghan

2004

Chemistry A European J

592

240

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“…[5][6][7][8][9] Since de Silva and his co-workers reported an AND logic gate, investigations about logic systems acting as logic binary operations have flourished extensively. [10][11][12][13][14][15][16][17][18] Notably, to meet the needs of high density information processing technology, multifunction logic systems which integrate several functions within a single molecule have been prestigious in both basic research and applications [19][20][21][22][23][24][25] because monomolecular logic circuits could eliminate the possibility of mutual interferences rooting from molecular interactions. [26][27][28] On the other hand, studies on colorimetric logic gate have drawn a great deal of attention.…”

Section: Introductionmentioning

confidence: 99%

Salicylaldehyde fluorescein hydrazone: a colorimetric logic chemosensor for pH and Cu(II)

Chen

et al. 2008

Tetrahedron Letters

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“…have been reported. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] In the vast majority of these, at least one of the inputs of the logic gate requires physical addition of a chemical species that diffuses to a molecule and carries out a reaction, changing molecular structure. Logic gates with chemical inputs require fluid solutions, and their speed is limited by the time required for material transfer, diffusion, and the chemical reactions.…”

Section: Introductionmentioning

confidence: 99%

Molecular AND and INHIBIT Gates Based on Control of Porphyrin Fluorescence by Photochromes

et al. 2005

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A molecular triad consisting of a porphyrin (P) covalently linked to two photochromes-one from the dihydroindolizine family (DHI) and one from the dihydropyrene family (DHP)-has been synthesized and found to act as either a molecular AND logic gate or an INHIBIT gate, depending on the inputs and initial state of the photochromes. The basis of these functions is quenching of porphyrin fluorescence (output of the gates) by the photochromes. The spiro form of DHI does not quench porphyrin fluorescence, whereas its betaine isomer strongly quenches by photoinduced electron transfer. DHP also quenches porphyrin fluorescence, but its cyclophanediene isomer does not. The triad has been designed using suitable energetics and electronic interactions, so that although these quenching phenomena may be observed, independent isomerization of the attached photochromes still occurs. This makes it possible to switch porphyrin fluorescence on or off by isomerization of the photochromes using various combinations of inputs such as UV light, red light, and heat.

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Supramolecular fluorescent probes for the detection of mixed alkali metal ions that mimic the function of integrated logic gates

Cited by 37 publications

References 40 publications

Molecular‐Scale Logic Gates

Molecular‐Scale Logic Gates

Salicylaldehyde fluorescein hydrazone: a colorimetric logic chemosensor for pH and Cu(II)

Molecular AND and INHIBIT Gates Based on Control of Porphyrin Fluorescence by Photochromes

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