Logical sensing with fluorescent molecular logic gates based on photoinduced electron transfer

Magri, David C.

doi:10.1016/j.ccr.2020.213598

Cited by 77 publications

(54 citation statements)

References 131 publications

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“…The multianalyte detection concept, which was first proposed by De Silva's group ( Magri et al., 2006 ; Schmittel and Shu, 2012 ; Chen et al., 2015 ; Magri, 2021 ), has become a hotspot in the field of sensors owing to its advantages of high efficiency, rapidity, simultaneous recognition and in-situ detection ( Xu et al., 2017 ; Park et al., 2018 ; Zhang et al., 2018 ; Chen et al., 2019a ; Zhao et al., 2021 ; Slenders et al., 2021 ; Huang et al., 2021b ; Nakamitsu et al., 2021 ). Multianalyte sensors were originally designed for multiple metal ions ( Magri et al., 2006 ), but these systems have subsequently been developed for multiple bioactive molecules ( Yin et al., 2018 ; Zhang et al, 2020b ; Thanzeel et al., 2020 ), bacteria ( Zheng et al., 2018 ), etc.…”

Section: Introductionmentioning

confidence: 99%

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

et al. 2021

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Summary A series of N -alkyl-substituted polybenzimidazoles ( SPBIs ), synthesized by simple condensation and N -alkylation, act as functional materials with tunable microstructures and sensing performance. For their controllable morphologies, the formation of nano-/microspheres is observed at the n (RBr)/ n (PBI) feed ratio of 5:1. Products with different degrees of alkylation can recognize metal ions and nitroaromatic compounds (NACs). For example, SPBI-c , obtained at the feed ratio of 1:1, can selectively detect Cu 2+ , Fe 3+ , and NACs. By contrast, SPBI-a , obtained at the feed ratio of 0.1:1, can exclusively detect Cu 2+ with high sensitivity. Their sensing mechanisms have been studied by FT-IR spectroscopy, SEM, XPS, and DFT calculations. Interestingly, the SPBIs can adsorb Cu 2+ in solution and show good recyclability. These results demonstrate that polymeric materials with both sensing and adsorption applications can be realized by regulating the alkylation extent of the main chain, thus providing a new approach for the facile synthesis of multifunctional materials.

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Section: Introductionmentioning

confidence: 99%

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

et al. 2021

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“…We note that there is an interesting conceptual parallel to be drawn between the ‘dual-input, dual-output’ nature of this cage-based analytical system, and molecular logic gates 19 in which different combinations of chemical stimuli provide the inputs which control the luminescence output ( e.g. p H and solvent; 20 p O 2 and metal ion concentration; 21 p H and p O 2 ).…”

Section: Discussionmentioning

confidence: 99%

Orthogonal binding and displacement of different guest types using a coordination cage host with cavity-based and surface-based binding sites

2021

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“…In these regioisomers an electron can be inhibited or accelerated by an intramolecular charge transfer (ICT), depending on the sign and magnitude of the molecular electric field [4] . Nowadays, this PET mechanism is applied in fluorescent probes for protons, cations and in logic gates [5a–f] . In general, the PET concept is widely used to detect analytes such as cations by fluorescence enhancements [6a–d] .…”

Section: Figurementioning

confidence: 99%

Influence of Regioisomerism in 9‐Anthracenyl‐Substituted Dithiodicyanoethene Derivatives on Photoinduced Electron Transfer Controlled By Intramolecular Charge Transfer

et al. 2021

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In this paper, we report on the fluorescence behaviour of three regioisomers which consist of two 9‐anthracenyl fluorophores and of differently substituted dithiodicyanoethene moieties. These isomeric fluorescent probes show different quantum yields (ϕf). In these probes, an oxidative photoinduced electron transfer (PET) from the excited 9‐anthracenyl fluorophore to the dithiodicyanoethene unit quenches the fluorescence. This quenching process is accelerated by an intramolecular charge transfer (ICT) of the push‐pull π‐electron system of the dithiodicyanoethene group. The acceleration of the PET depends on the strength of the ICT unit. The higher the dipole moment of the ICT unit, the stronger the observed fluorescence quenching. To the best of our knowledge, this is the first report of a regioisomeric influence on an oxidative PET by an ICT.

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Logical sensing with fluorescent molecular logic gates based on photoinduced electron transfer

Cited by 77 publications

References 131 publications

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

Orthogonal binding and displacement of different guest types using a coordination cage host with cavity-based and surface-based binding sites

Influence of Regioisomerism in 9‐Anthracenyl‐Substituted Dithiodicyanoethene Derivatives on Photoinduced Electron Transfer Controlled By Intramolecular Charge Transfer

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