Section 4Section 4Molecular crystalMolecular crystal

Discovery and Applications of Discovery and Applications of fullerenesfullerenes

Smallest Fullerene Smallest Fullerene

• a molecule with 20 carbona molecule with 20 carbonss

(C20)(C20)• Shape like a soccer ballShape like a soccer ball• It is hard to produce one bIt is hard to produce one b

ecause it is highly reactiveecause it is highly reactive (Unstable)(Unstable)

C20

Other form of C20Other form of C20

• There are two other forms of C20 There are two other forms of C20 (isomers)(isomers)

• Isomers have same number of atoms Isomers have same number of atoms but with different structuresbut with different structures

• One in ring One in ring

• One in bowl-shapedOne in bowl-shaped

C20(Ring shape)

C20(Bowl shaped)

Nano-C Nano-C

• nanostructured carbon materials nanostructured carbon materials • Includes fullerenes, nanotubes and their chemIncludes fullerenes, nanotubes and their chem

ical derivatives ical derivatives

Single nanotube Fullerene (C60)

Applications of nanotubesApplications of nanotubes

• Actuators (Conversion of electrical Actuators (Conversion of electrical energy to mechanical energy and energy to mechanical energy and vice versa )vice versa )

• SensorsSensors

• Composites, Paints & Coatings Composites, Paints & Coatings

• electronic deviceselectronic devices

multi-walled carbon nanotubes

Buckyball Buckyball

• the discovery of the C60 "bthe discovery of the C60 "buckyball" by the 1996 Nobeuckyball" by the 1996 Nobel Prize laureates Robert F. Cl Prize laureates Robert F. Curl, Harold W. Kroto, and Riurl, Harold W. Kroto, and Richard E. Smalleychard E. Smalley

• Led by the most significant Led by the most significant spin-off product of fullerenspin-off product of fullerene researche research

Buckyball

Website referencesWebsite references

• http://en.wikipedia.org/wiki/Fullerenehttp://en.wikipedia.org/wiki/Fullerene

• http://www.chem.sunysb.edu/msl/fullerhttp://www.chem.sunysb.edu/msl/fullerene.htmlene.html

• httphttp://www.godunov.com/Bucky/fullerene.h://www.godunov.com/Bucky/fullerene.htmltml Student information

Cheung Kwan Ho

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