Rick Smalley Rice University Metal Clusters Fe10 Si6 Al20 etc lens
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Transcript of Rick Smalley Rice University Metal Clusters Fe10 Si6 Al20 etc lens
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Metal target
Laser beam
lensRick Smalley
Rice University
Metal Clusters
Fe10 Si6 Al20
etc
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Try to reproduce the stellar plasma in the laboratory
Plasma in lab Exploding Star
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Graphite Target
Focused Laser beam produces 10000o plasma
lens
Carbon chains molecules
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Jim Heath and Sean O’Brien
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Yuan Liu
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carbon plasma cluster beam
Laser and graphite disk
skimmer hole to mass spectrometer
Laser Vapourisation Cluster Beam System - Smalley
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Mass spectrum of carbon clusters (4-9-85) in which C60 and C70 were first recognised
as special
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Buckminster Fuller’s Dome at Expo 67
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C60: Buckminsterfullerene
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Graphite Target
lens
A BIG surprise
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Graphite Target
lens
C60 clusters
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The IUPAC name !
Hentricontacyclo[29.29.0.02.14.03.12
.04.59.05.10.06.58.07.55.08.53.09.21.011.20
.013.18015.30.016.28.017.25.019.24.022.52
.023.50026.49.027.47.029.45.032.44.033.60
.034.57.035.43.036.56.037.41.038.54039.51
.040.48.042.46]
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Hexaconta -1,3,5(10),6,8,11,13(18),14,16,19,21,27,29(45),30,32(44),33,35,(43),36,38(54),39(51),40(48),41,46,49,52,55,57,59 - tricontaene
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rather like the floor of the Curl’s washroom
Graphite consists of sheets of carbon atoms in hexagonal arrays
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Stardome
Map of the sky on a truncated icosahedron consisting of pentagons as
well as hexagons
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Crystals of Buckminsterfullerene obtained by Kraetschmer and co-workers
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nmr spectrum of soot extract
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The Goode Company, Houston
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The Second Strand
A fundamental advance was made at Rice University in Texas.
Smalley and co-workers developed a technique which enabled large metal
clusters (with tens of atoms) to be studied for the first time
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Graphite is known to consist of layers of hexagonally packed carbon atoms
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2cm
Supersonic cluster beam nozzle
Smalley and co-workers - Rice University 1981
Rotating metal disk
Focused laser beam
Helium
Solenoid valve
Aggregating clusters