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US4714627A
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Method of gold deposition using volatile organogold complexes
Assignee: Idea Corp Canada
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Filing: 1985-12-17
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Granted: 1987-12-22
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Expires: 2005-12-17
Abstract
Abstract A method is described for depositing gold onto a target surface using volatile organogold(I) and organogold(III) complexes. The method requires the vaporization of the organogold complex under high vacuum and moderate temperature and introduction of the vaporized complex into contact with the target surface heated to a temperature at or above the decomposition temperature for the complex, so that the complex decomposes upon contacting the surface thereby depositing gold thereon. A number of new organogold complexes are described for use in the method.
Inventors
- 👤 Richard J. Puddephatt
- 👤 Ilse Treurnicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:55
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/18
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
177 words
A method for depositing gold onto a target surface, comprising: vaporizing an organogold complex under conditions of a dynamic vacuum of at least about 10 -2 mbar and moderate heating in the range of about 30° C. to about 80° C., said complex having the formula: R--Au.sup.(I) ←L or R.sub.3 Au.sup.(III) ←L wherein R may be an alkyl, alkenyl, alkynyl, aryl or aralkyl group having up to 12 carbon atoms; and L may be --CNR' or --PR" 3 wherein R' is a C 1-6 alkyl, or an aryl or aralkyl group having up to 10 carbon atoms, and R" is a C 1-3 alkyl, or aryl; heating the target surface also under a dynamic vacuum of at least about 10 -2 mbar to at least the temperature of decomposition for the organogold complex, said heating being in the range of about 100° C. to about 250° C.; and introducing the vaporized complex into contact with the heated target surface while maintaining the vacuum thereby causing decomposition of the complex and deposition of gold onto the target surface.
Claim 2
Independent Claim
177 words
A method for depositing gold onto a target surface, comprising: vaporizing an organogold complex under conditions of a dynamic vacuum of at least about 10 -2 mbar and moderate heating in the range of about 30° C. to about 80° C., said complex having the formula: R--Au.sup.(I) ←L or R.sub.3 Au.sup.(III) ←L wherein R may be an alkyl, alkenyl, alkynyl, aryl or aralkyl group having up to 12 carbon atoms; and L may be --CNR' or --PR" 3 wherein R' is a C 1-6 alkyl, or an aryl or aralkyl group having up to 10 carbon atoms, and R" is a C 1-3 alkyl, or aryl; heating the target surface also under a dynamic vacuum of at least about 10 -2 mbar to at least the temperature of decomposition for the organogold complex, said heating being in the range of about 100° C. to about 250° C.; and introducing the vaporized complex into contact with the heated target surface while maintaining the vacuum thereby causing decomposition of the complex and deposition of gold onto the target surface.
Claim 3
Dependent Claim
19 words
A method as claimed in claim 1, wherein the target surface is heated by means of a laser beam.
Claim 4
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is methyl(isocyanomethyl)gold(I).
Claim 5
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is 3,3-dimethyl-1-butynyl(isocyanomethyl)gold(I).
Claim 6
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is 1-propynyl(trimethylphosphine)gold(I).
Claim 7
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is trimethyl(trimethylphosphine)gold(III).
Claim 8
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is methyl(trimethylphosphine)gold(I).
Claim 9
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is 3,3-dimethyl-1-butynyl(trimethylphosphine)gold(I).
Claim 10
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is 1-propynyl(isocyanomethyl)gold(I).
Claim 11
Dependent Claim
41 words
A method as claimed in claim 1, wherein the organogold complex is vaporized under a dynamic vacuum of about 10 -3 mbar, with heating thereof in the range 40°-70° C., and the target surface being heated in the range 150°-200° C.
Claim 12
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is methyl(isocyanocyclohexyl)gold(I).
Claim 13
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is vinyl(isocyanomethyl)gold(I).
Claim 14
Dependent Claim
13 words
A method as claimed in claim 1, wherein the organogold complex is vinyl(isocyanotert-butyl)gold(I).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |