Artificial Molecular Machines

Balzani, Vincenzo; Credi, Alberto; Raymo, Françisco M.; Stoddart, J. Fraser

doi:10.1002/1521-3773(20001002)39:19<3348::aid-anie3348>3.0.co;2-x

Cited by 2,410 publications

(1,526 citation statements)

References 483 publications

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“…The i x -CB[n] diastereomers (x=1 or 2; n=6-8) are found to be stable in gas phase and in different solvents. 1 H NMR patterns of isolated iCB [6] and iCB [7] from the density functional calculations agree well with experimentally measured NMR spectra [44]. Nonetheless, reports on complexation of i x -CB[n] hosts are scanty.…”

Section: Introductionsupporting

confidence: 66%

“…A family of cucurbit[n]uril, CB [n], hosts comprising of methylene-bridged glycouril units have attracted considerable attention owing to their potential applications in organic synthesis [1][2][3][4], molecular recognition [5,6], nanoscience [7,8], catalysis [9][10][11], drug delivery vehicles [12] and separation technology [13,14]. The number of glycouril units in cucucrbituril homologues renders varying size to their hydrophobic cavity while portal carbonyl groups on portals provide hydrophilic exterior to these macrocycles.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore density functional theory have been successfully applied to characterize the electronic structure and spectral features of CB [n] homologues and modified CB[n] hosts [37][38][39][40][41][42][43][44]. It has been inferred that CB [6] or CB [7] allows binding of various guests of appropriate length and size [45][46][47].…”

Section: Introductionmentioning

confidence: 99%

“…These kinetic products are referred as inverted cucurbit[n]urils (iCB[n]). A prototype iCB [7] host is shown schematically in analogues. It has also been pointed out that inverting of one (or two) glycouril unit(s) of CB [n] hosts (n=6-8) engender enhanced dipole moment [50].…”

Section: Introductionmentioning

confidence: 99%

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Encapsulation of alkyl and aryl derivatives of quaternary ammonium cations within cucurbit[n]uril (n = 6,7) and their inverted diastereomers: density functional investigations

et al. 2014

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Section: Introductionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Encapsulation of alkyl and aryl derivatives of quaternary ammonium cations within cucurbit[n]uril (n = 6,7) and their inverted diastereomers: density functional investigations

et al. 2014

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“…[55][56][57] Moreover, as the p-anisyl-substituents can easily be converted to hydroxyphenyl substituents, they provide the opportunity for further synthetic coupling, which makes Ru-(bmptpphz) an interesting candidate concerning its application as building block for artificial molecular machines. 58 For instance, an interlock of Ru(bmptpphz) with catenane or rotaxane like architectures, which are used for the construction of molecular machines and motors, seems to be feasible. 59 Instead of a chemically induced exchange of metal ions, Ru(bmptpphz) could function as module for light-driven reduction or oxidation of implemented metal centres to induce movement.…”

Section: Photocatalytic Hydrogen Production and Mercury Poisoningmentioning

confidence: 99%

Tuning of photocatalytic activity by creating a tridentate coordination sphere for palladium

et al. 2014

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Nanotechnology

Milev¹,

Kannangara²,

Wilson³

2005

Kirk-Othmer Encyclopedia of Chemical Technology

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Along with genetic engineering, nanotechnology appears to be the other big growth area of this century. Nanotechnology means building useful things at the 10 −9 m level. Nanotechnology is not synonymous with chemistry, since it is more specific and concerned with observing atoms and molecules and manipulating them through visual observation at the nanoscale level. However, it may eventually encompass all of chemistry and a large part of physics and molecular biology. Feynman’s and Drexler’s definitions now define the field of molecular nanotechnology, which is sometimes also called molecular manufacturing. The latter is a poor description, since it is synonymous with synthetic chemistry. Other terms, such as molecular engineering, have also been used, but these terms have also broadened to include manipulating larger than atomic entities and the ability to design and manufacture materials and devices that are tens or hundreds of atoms across. Once material sizes are reduced below 100 nm, they begin demonstrating an array of unique properties based on quantum mechanical effects, rather than the familiar Newtonian mechanics that operate in the macroscopic scale. There are two fundamental strategies used to produce very small machines or devices. The “top‐down” approach takes a chunk of material and by physical methods carves out the desired nanostructure. The “bottom‐up” approach is the most promising since increasingly complex structures are intentionally assembled from nanoscale components to build larger scale devices. This article provides a short overview of current nanotechnology with special emphasis on fullerene and carbon nanotube properties and applications that have been pursued during the past decade. Development in covalent and non covalent fullerene and carbon nanotube functionalization led to the preparation of new supramolecular architectures such as electron acceptors for photo induced energy transfer. These molecular structures feature marked properties as a consequence of the existence of the fullerene or carbon nanotube components. A review of efficient ways on the organic functionalization of fullerenes and carbon nanotubes is also provided. Langmuir‐Blodgett and self assembly are two commonly used techniques for organizing functionalized fullerenes and nanotubes in highly ordred thin films. Characterization techniques for these films are briefly presented.

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Artificial Molecular Machines

Cited by 2,410 publications

References 483 publications

Encapsulation of alkyl and aryl derivatives of quaternary ammonium cations within cucurbit[n]uril (n = 6,7) and their inverted diastereomers: density functional investigations

Encapsulation of alkyl and aryl derivatives of quaternary ammonium cations within cucurbit[n]uril (n = 6,7) and their inverted diastereomers: density functional investigations

Tuning of photocatalytic activity by creating a tridentate coordination sphere for palladium

Nanotechnology

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