10,018 research outputs found
Panoramic overview of unconventional approaches to detect chiral information
No full textThe concept of inherent chirality has gained considerable attention due to the possible synthesis of π-conjugated monomers that can be employed for preparing chiral electrode surfaces after electrooligomerization [1]. These materials have been used in enantiorecognition measurements involving chiral analytes, resulting in high selectivity based on diastereomeric interactions between the deposited enantiopure antipode and the probes dissolved in solution. In this context the high enantioselectivity of such chiral surfaces was used in combination with the mechanical and electrical properties of polypyrrole (Ppy) films to develop three new straightforward read-outs for the absolute on-off recognition of enantiomers of a chiral probe in solution; i) electromechanical deformation (a) [2], ii) electrochemically induced light emission (b) [3] and iii) self-induced enantioselective trajectories (c) [4]. These new approaches allow to convert chiral information present at the molecular level into macroscopic actuation, light emission or controlled trajectories. Furthermore, such systems allow correlating the output signal with the concentration of the enantiomers present in solution, even in the case of mixtures containing different ratios of the molecular antipodes.
[1] Arnaboldi, S.; Benincori, T.; Cirilli, R.; Kutner, W.; Magni, M.; Mussini, P. R.; Noworyta, K.; Sannicolo,̀ F. Chem. Sci. 2015, 6, 1706− 1711.
[2] Arnaboldi, S.; Gupta, B.; Benincori, T.; Bonetti, G.; Cirilli, R.; Kuhn, A. Anal. Chem. 2020, 92, 10042−10047.
[3] Salinas, G.; Arnaboldi, S.; Bonetti, G.; Cirilli, R.; Benincori, T.; Kuhn, A. Chirality 2021, 33, 875-882.
[4] Arnaboldi, S.; Salinas, G.; Karajic, A.; Garrigue, P.; Benincori, T.; Cirilli, R.; Bichon, S.; Gounel, S.; Mano, N.; Kuhn, A. Nat. Chem. 2021, 13, 1241-1247.
Keywords: (inherent)chirality; bipolar electrochemistry, chiral actuator, chiral swimmers, light emitting diodes
This work has been funded by the European Research Council (ERC) under the HORIZON-ERC-2021 program (grant agreement no 101040798, ERC Starting Grant CHEIR)
Marrëdhëniet ekonomike dhe politike të helenëve me ilirët (shek. V-III p. e. sonë) / Les rapports économiques et politiques des Hellènes avec les Illyriens (Ve-IIIe siècles av. n. ère)
No full textMano Aleksandra. Marrëdhëniet ekonomike dhe politike të helenëve me ilirët (shek. V-III p. e. sonë) / Les rapports économiques et politiques des Hellènes avec les Illyriens (Ve-IIIe siècles av. n. ère). In: Iliria, vol. 16 n°1, 1986. Kuvendi II i Studimeve Ilire. IIe colloque des Etudes Illyriennes (Tiranë, 20-23. XI. 1985) pp. 155-163
Unconventional Electrochemical Approaches for the Direct Readout of Chiral Information
No full textAmong the different strategies to endow conducting polymers with chiral features, the concept of inherent chirality is extremely attractive and efficient for several reasons. [1] Inherent chirality is an intrinsic propriety of the whole molecule in which the stereogenic element responsible for chirality coincides with the functional group responsible for the specific properties of the molecular material. The racemization barrier of these molecules is high enough to allow the separation into stable enantiomers by chiral HPLC. Their electro-oligomerization results in chiral electrode surfaces able to discriminate the antipodes of chiral species by differences in peak potential recorded by voltammetry. [2] This is a true advantage from an analytical point of view, because it is possible to achieve the enantioselective discrimination in racemic mixtures of the analyte, in contrast to most of the approaches presented in literature for which the recognition is only based on differences in current intensity. In this context the high enantioselectivity of such chiral surfaces was used to develop i) a new approach based on bipolar electrochemistry for the absolute on-off recognition of enantiomers of a chiral probe, [3] and ii) new autonomous enzymes based swimmers able to convert chiral information present at the molecular level into macroscopic enantioselective trajectories. [4]
[1] Arnaboldi, S.; Magni, M.; Mussini, P. R. Curr. Opin. Electrochem. 2018, 8, 60−72.
[2] Arnaboldi, S.; Benincori, T.; Cirilli, R.; Kutner, W.; Magni, M.; Mussini, P. R.; Noworyta, K.; Sannicolo,̀ F. Chem. Sci. 2015, 6, 1706− 1711.
[3] Arnaboldi, S.; Gupta, B.; Benincori, T.; Bonetti, G.; Cirilli, R.; Kuhn, A. Anal. Chem. 2020, 92, 10042−10047.
[4] Arnaboldi, S.; Salinas, G.; Karajic, A.; Garrigue, P.; Benincori, T.; Cirilli, R.; Bichon, S.; Gounel, S.; Mano, N.; Kuhn, A. Nat. Chem. 2021, in pres
Admiel Kosman, Siamo giunti a Dio
No full textInternational audienceSix poems from Israeli poet Admiel Kosman translated from the Hebrew into Italian. Selection of poems, presentation of the author, translation and notes by Davide Mano
Admiel Kosman, Siamo giunti a Dio
No full textInternational audienceSix poems from Israeli poet Admiel Kosman translated from the Hebrew into Italian. Selection of poems, presentation of the author, translation and notes by Davide Mano
Kërkimet arkeologjike gjatë vitit 1982
No full textMano Aleksandra. Kërkimet arkeologjike gjatë vitit 1982. In: Iliria, vol. 13 n°1, 1983. pp. 277-280
Teatri i Apollonisë / Le théâtre d'Apollonie
No full textMano Aleksandra. Teatri i Apollonisë / Le théâtre d'Apollonie. In: Iliria, vol. 12 n°1, 1982. pp. 191-205
C. G. Mano : Documente din secolele al XVI-XIX privitoare la familia Mano.
No full textBousquet R. C. G. Mano : Documente din secolele al XVI-XIX privitoare la familia Mano.. In: Échos d'Orient, tome 12, n°76, 1909. pp. 182-183
Aspekte të kolonizimit helen në Ilirinë e Jugut /Aspects de colonisation hellénique en Illyrie du Sud
No full textMano Aleksandra. Aspekte të kolonizimit helen në Ilirinë e Jugut /Aspects de colonisation hellénique en Illyrie du Sud . In: Iliria, vol. 16 n°2, 1986. pp. 5-22
Tri vazo antike nga Muzeu Arkeologjik i Tiranës / Trois vases au Musée Archéologique de Tirana
No full textMano Aleksandra. Tri vazo antike nga Muzeu Arkeologjik i Tiranës / Trois vases au Musée Archéologique de Tirana. In: Iliria, vol. 11 n°2, 1981. pp. 95-104
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