Light-driven altitudinal molecular motors on surfaces

London, Gábor; Carroll, Gregory T.; Landaluce, Tatiana Fernandez; Pollard, Michael M.; Rudolf, Petra; Feringa, Bernard

doi:10.1039/b821755f

Cited by 81 publications

(77 citation statements)

References 37 publications

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“…After the evaporation of the solvent the crude product was purified by flash chromatography (SiO 2 , n-heptane : EtOAc = 7 : 1) to give 1.05 g (2.24 mmol, 62 %) of colourless oil. 1 …”

Section: Synthesis Of Compounds and Intermediatesmentioning

confidence: 99%

“…The filtrate was concentrated in vacuo and purified by flash chromatography (SiO 2 , n-pentane : diethyl ether = 10 : 1) to give 86 mg (0.18 mmol, 78 %) of a purple oil . 1 …”

Section: 6-bis(dec-9-enyloxy)-27-dimethyl-23-dihydro-1h-indene-1-mentioning

confidence: 99%

“…After the evaporation of the solvent the crude product was purified by flash chromatography (SiO 2 , n-heptane : toluene = 5 : 1) to give alkene M1 as yellow oil which solidified to a waxy solid upon standing in the fridge (560 mg, 0.91 mmol, 63 %). 1 …”

Section: Dialkene-motor (M1)mentioning

confidence: 99%

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Silanization of quartz, silicon and mica surfaces with light-driven molecular motors: construction of surface-bound photo-active nanolayers

2013

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“…After the evaporation of the solvent the crude product was purified by flash chromatography (SiO 2 , n-heptane : EtOAc = 7 : 1) to give 1.05 g (2.24 mmol, 62 %) of colourless oil. 1 …”

Section: Synthesis Of Compounds and Intermediatesmentioning

confidence: 99%

“…The filtrate was concentrated in vacuo and purified by flash chromatography (SiO 2 , n-pentane : diethyl ether = 10 : 1) to give 86 mg (0.18 mmol, 78 %) of a purple oil . 1 …”

Section: 6-bis(dec-9-enyloxy)-27-dimethyl-23-dihydro-1h-indene-1-mentioning

confidence: 99%

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Silanization of quartz, silicon and mica surfaces with light-driven molecular motors: construction of surface-bound photo-active nanolayers

2013

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“…Surface-bounded molecular switches, rotors and motors are fascinating since they can be exposed to external stimuli [4][5][6] and investigated by surface analysis methods [7][8][9][10]. Recent studies have shown that surface-bounded molecular switches and rotors can be used in experimental techniques such as scanning tunneling microscopy and spectroscopy (STM/STS) which also allow the measurement of molecular switching/rotor rates and energy barriers [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…The movement and dynamics of chloromethyl-and dichloromethylsylil molecules on fused silica surfaces have been analyzed by STM [4,5,27].…”

Section: Introductionmentioning

confidence: 99%

Structural changes in a Schiff base molecular assembly initiated by scanning tunneling microscopy tip

et al. 2016

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We report the controlled self-organization and switching of newly designed Schiff base (E)-4-((4-(phenylethynyl) benzylidene) amino) benzenethiol (EPBB) molecules on a Au (111) surface at room temperature. Scanning tunneling microscopy and spectroscopy (STM/STS) were used to image and analyze the conformational changes of the EPBB molecules. The conformational change of the molecules was induced by using the STM tip while increasing the tunneling current. The switching of a domain or island of molecules was shown to be induced by the STM tip during scanning. Unambiguous fingerprints of the switching mechanism were observed via STM/STS measurements. Surface-enhanced Raman scattering was employed, to control and identify quantitatively the switching mechanism of molecules in a monolayer. Density functional theory calculations were also performed in order to understand the microscopic details of the switching mechanism. These calculations revealed that the molecular switching behavior stemmed from the strong interaction of the EPBB molecules with the STM tip. Our approach to controlling intermolecular mechanics provides a path towards the bottom-up assembly of more sophisticated molecular machines.S Online supplementary data available from stacks.iop.org/NANO/27/335601/mmedia

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Photochemically Driven Molecular Devices and Machines

Silvi

Venturi

2012

Supramolecular Chemistry

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Light‐induced processes are the basis of many fundamental natural phenomena as well as of a variety of applications. Since the functions that can arise from the interaction between light and matter depend on the degree of complexity and organization of the receiving “matter,” the research on these processes has progressively moved from molecular to supramolecular (multicomponent) systems, thereby originating the field of supramolecular photochemistry. In this context, several research groups have synthesized and investigated multicomponent chemical systems capable of performing specific light‐induced functions, such as elaboration of information in the form of input/output signals and relative mechanical motions of the molecular components. Systems of this type can be viewed as simple examples of molecular devices and machines. These studies are of interest not only for increasing the basic understanding of photoinduced processes but also for the growth of nanoscience and the development of nanotechnology.

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Light-driven altitudinal molecular motors on surfaces

Abstract: A Cu(I)-catalyzed 1,3-dipolar cycloaddition was used to construct a monolayer of an altitudinal molecular motor on quartz and silicon substrates, which represents the fastest light-driven molecular motor, to date, grafted to a solid surface.

Cited by 81 publications

References 37 publications

Silanization of quartz, silicon and mica surfaces with light-driven molecular motors: construction of surface-bound photo-active nanolayers

Silanization of quartz, silicon and mica surfaces with light-driven molecular motors: construction of surface-bound photo-active nanolayers

Structural changes in a Schiff base molecular assembly initiated by scanning tunneling microscopy tip

Photochemically Driven Molecular Devices and Machines

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