A Molecular Elevator

Badjić, Jovica D.; Balzani, Vincenzo; Credi, Alberto; Silvi, Serena; Stoddart, J. Fraser

doi:10.1126/science.1094791

Cited by 1,001 publications

(549 citation statements)

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“…Recent advances in nanotechnology has resulted in development of nano-scale machinery such as molecular elevators [10], nano switches [11], chemical sensors [12], [13], nano actuators [14], [15], carbon nanotube receivers [16] and transmitters [17]. Main mechanisms to manufacture nano-machinery involve three approaches [9]: The top-down approach aims to manufacture nano-machinery through the miniaturization of micro-scale devices to nanoscale.…”

Section: Related Workmentioning

confidence: 99%

A nanoradio architecture for interacting nanonetworking tasks

Köksal

Ekici

2010

Nano Communication Networks

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Section: Related Workmentioning

confidence: 99%

A nanoradio architecture for interacting nanonetworking tasks

Köksal

Ekici

2010

Nano Communication Networks

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“…[1][2][3][4][5][6][7][8][9][10] Whilst it is tempting to regard such multicomponent assemblies as "molecular meccano," 11 many aspects of classical mechanics become meaningless at this level of miniaturization. 12 For example, in the macroscopic world the equations of motion are governed by inertial terms (dependent on mass), but under the conditions that molecular machines operate viscous forces (governed by particle dimensions) and Brownian motion dominate mechanical behavior.…”

Section: Introductionmentioning

confidence: 99%

Bimodal dynamics of mechanically constrained hydrogen bonds revealed by vibrational photon echoes

Bodis

Yeremenko

Berná

et al. 2011

The Journal of Chemical Physics

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Bimodal dynamics of mechanically constrained hydrogen bonds revealed by vibrational photon echoes Bodis, P.; Yeremenko, S.; Berna, J.; Buma, W.J.; Leigh, D.A.; Woutersen, S. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We have investigated the dynamics of the hydrogen bonds that connect the components of a [2]rotaxane in solution. In this rotaxane, the amide groups in the benzylic-amide macrocycle and the succinamide thread are connected by four equivalent N−H· · ·O=C hydrogen bonds. The fluctuations of these hydrogen bonds are mirrored by the frequency fluctuations of the NH-stretch modes, which are probed by means of three-pulse photon-echo peak shift spectroscopy. The hydrogen-bond fluctuations occur on three different time scales, with time constants of 0.1, 0.6, and ≥200 ps. Comparing these three time scales to the ones found in liquid formamide, which contains the same hydrogenbonded amide motif but without mechanical constraints, we find that the faster two components, which are associated with small-amplitude fluctuations in the strength of the N−H· · ·O=C hydrogen bonds, are very similar in the liquid and the rotaxane. However, the third component, which is associated with the breaking and subsequent reformation of hydrogen bonds, is found to be much slower in the rotaxane than in the liquid. It can be concluded that the mechanical bonding in a rotaxane does not influence the amplitude and time scale of the small-amplitude fluctuations of the hydrogen bonds, but strongly slows down the complete dissociation of these hydrogen bonds. This is probably because in a rotaxane breaking of the macrocycle-axle contacts is severely hindered by the mechanical constraints. The hydrogen-bond dynamics in rotaxane-based molecular machines can therefore be regarded as liquidlike on a time scale 1 ps and less, but structurally frozen on longer (up to at least 200 ps) time scales.

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“…16 Após a adição de ácido, a plataforma move-se novamente para a estação superior do elevador (34b). 18 Expandindo os estudos sobre os rotaxanos, foi criado o "músculo molecular" para mimetizar os movimentos de contração e extensão do músculo esquelético (Esquema 10).…”

Section: Contribuições Do Laboratório De J F Stoddart: Rotaxanosunclassified

O Prêmio Nobel De Química Em 2016: Máquinas Moleculares

Feu¹,

Assis²,

Nagendra³

et al. 2017

Quim. Nova

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Recebido em 16/11/2016; aceito em 08/12/2016; publicado na web em 31/01/2017 THE NOBEL PRIZE IN CHEMISTRY 2016: MOLECULAR MACHINES. The Nobel Prize in Chemistry 2016 was granted to Jean-Pierre Sauvage, Sir James F. Stoddart and Bernard (Ben) L. Feringa. These scientists were responsible for the creation and development of molecular machines. The development of such systems represents a breakthrough in the field of supramolecular chemistry, nanotechnology and organic synthesis. This article aims to bring simple and objective information to the scientific community about the work of these three researchers.Keywords: molecular machines, Nobel Prize 2016, nanotechnology, organic synthesis, supramolecular chemistry. INTRODUÇÃOA Academia Real Sueca de Ciências laureou os cientistas JeanPierre Sauvage, Sir James Fraser Stoddart e Bernard L. Feringa com o prêmio Nobel de Química em 2016 "pelo design e síntese das máquinas moleculares".Em nosso dia a dia, estamos acostumados a utilizar diversos tipos de máquinas para nos ajudar em tarefas dos mais variados tipos, algumas tão simples como a preparação de um café e outras extremamente complexas como a linha de montagem de um automóvel. O design e construção de novas maquinarias é algo que está fortemente associado ao desenvolvimento tecnológico e científico e, como resultado, vem trazendo mais conforto e recursos para a nossa sociedade. O conceito de construir máquinas moleculares é bastante recente e a construção efetiva do que se considera máquinas moleculares ocorreu a cerca de 25 anos atrás. 1 Uma das maiores influências e inspirações para construção de má-quinas moleculares veio do físico Richard Feynman, também laureado com o prêmio Nobel de Física em 1965. Em sua famosa palestra para a reunião anual da Sociedade Americana de Física no ano de 1959, cujo título era "There's plenty of room at the bottom" que, em tradução livre para a língua portuguesa podemos entender como "Ainda há muito espaço lá no fundo", Feynman queria transmitir a idéia que ainda havia muito espaço para ser explorado no interior dos átomos, apontando claramente para um novo caminho para o desenvolvimento da ciência e tecnologia da época e, de forma particular, no que se configurou nos anos seguintes como a área de nanociência e nanotecnologia, com a perspectiva inclusive de construção de máquinas moleculares, apontada por Drexler em seu livro "Engines of Creation". 2 Quando se pensa na construção de uma máquina é necessário dispor de várias peças. O funcionamento adequado desta máquina depende de como os seus componentes respondem uns aos outros quando há um estímulo externo de energia, ou seja, quando a máquina é ligada. Muitas das máquinas com as quais estamos acostumados têm seu funcionamento baseado em movimentos de seus componentes internos. Saber como controlar esses movimentos para que a máquina possa desempenhar de forma correta a sua função é algo fundamental para os projetistas e engenheiros.Construir máquinas em nível molecular possui os mesmos desafios (e outros mais!) para os químico...

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A Molecular Elevator

Cited by 1,001 publications

References 20 publications

A nanoradio architecture for interacting nanonetworking tasks

A nanoradio architecture for interacting nanonetworking tasks

Bimodal dynamics of mechanically constrained hydrogen bonds revealed by vibrational photon echoes

O Prêmio Nobel De Química Em 2016: Máquinas Moleculares

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