Synthesis of organic nanotubes and synthesis of ultrathin...

Details Synthesis of organic nanotubes and synthesis of ultrathin... Synthesis of organic nanotubes and synthesis of ultrathin...

2002-02-13

2004-07-13

Wong, Edna (Department: 1753)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C204S157150, C428S606000

Reexamination Certificate

active

06762331

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a method for synthesizing an organic nanotube and to a method for synthesizing an ultrafine nanowire using the organic nanotube as a template.
BACKGROUND OF THE INVENTION
The discovery of carbon nanotubes having unique structural and physicochemical properties has led to many attempts to develop various tubular inorganic and organic nanotubes [see “Y. Feldman et al.,
Science
267, 222(1995)”; “W. G. Orr et al.,
Science
285, 1049(1999)”; “A. Harada et al.,
Nature
364, 516(1993)”; and “M. R. Ghadiri et al.,
Nature
366, 324 (1993)”.] For example, organic nanotubes, such as cyclic peptide nanotubes, lipid nanotubes and cyclodextrin nanotubes, have been prepared, but their industrial applicability is limited due to the lack of suitable electrochemical and photochemical properties.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a method for synthesizing an organic nanotube having excellent electrochemical and photochemical properties suitable for use as a template in synthesizing a single-crystalline nanowire.
In accordance with one aspect of the present invention, there is provided a method for synthesizing a calix[4]hydroquinone(CHQ) organic nanotube, which comprises dissolving CHQ in an aqueous acetone solution, and allowing acetone to evaporate off the resulting solution at a temperature ranging from 0 to 20 □ to effectuate CHQ crystallization into a self-assembled nanotube.
In another aspect of the present invention, there is provided a method for synthesizing a nanowire, which comprises adding the CHQ organic nanotube thus synthesized to an aqueous solution containing a metal salt to let the metal ion enter the cavity of the nanotube and allowing the CHQ moieties of the nanotube to reduce the metal ion into the form of a nanowire.


REFERENCES:
patent: 5581091 (1996-12-01), Moskovits et al.
patent: 2002/0117659 (2002-08-01), Lieber et al.
patent: 11-246551 (1999-09-01), None

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