US5348936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-doped fullerenes and synthetic methods therefor
Assignee: University of Pennsylvania
•
Filing: 1993-04-16
•
Granted: 1994-09-20
•
Expires: 2013-04-16
Abstract
Abstract Superconducting, metal-doped fullerenes are provided, along with processes for their preparation in relatively high stoichiometric purity. In one embodiment, the processes provide fullerenes of the formula M x C q , where M is a metal, x is greater than 0 but less than about 10, and q is at least 60. The processes comprise contacting C q with metal in an amount and under reaction conditions effective to produce a compound having the formula M y C q , and contacting said M y C q with a portion of C q in an amount and under reaction conditions effective to produce said M x C q , wherein y is greater than x.
Inventors
- 👤 John P. McCauley, Jr.
- 👤 Qing Zhu
- 👤 Gavin Vaughan
- 👤 Nicole Coustel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:27
CPC Classifications
B; B82; B82Y; B82Y30/00; B82Y40/00; C; C01; C01B; C01B32/00; C01B32/15; C01B32/152; C01B32/156; Y; Y10; Y10S; Y10S505/00; Y10S505/725; Y10S505/775; Y10S505/80; Y10S505/81; Y10S505/815
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
65 words
A process for preparing a compound having the formula M 3 C 60 , comprising the steps of: contacting C 60 with metal under reaction conditions effective to produce a compound having the formula M 6 C 60 ; and contacting one equivalent of said MeC 60 with an equivalent of C 60 under reaction conditions effective to produce said M 3 C 60 .
Claim 2
Dependent Claim
65 words
A process for preparing a compound having the formula M 3 C 60 , comprising the steps of: contacting C 60 with metal under reaction conditions effective to produce a compound having the formula M 6 C 60 ; and contacting one equivalent of said MeC 60 with an equivalent of C 60 under reaction conditions effective to produce said M 3 C 60 .
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the metal is potassium, rubidium, or combinations thereof.
Claim 4
Dependent Claim
92 words
A process for preparing a compound having the formula M x C 60 where M is metal and x is greater than 0 and less than about 10, comprising the steps of: contacting C 60 with metal in an amount and under reaction conditions effective to produce a compound having the formula M y C 60 , where y is greater than x; and contacting said M y C 60 with a portion of C 60 in an amount and under reaction conditions effective to produce said M x C 60 .
Claim 5
Dependent Claim
92 words
A process for preparing a compound having the formula M x C 60 where M is metal and x is greater than 0 and less than about 10, comprising the steps of: contacting C 60 with metal in an amount and under reaction conditions effective to produce a compound having the formula M y C 60 , where y is greater than x; and contacting said M y C 60 with a portion of C 60 in an amount and under reaction conditions effective to produce said M x C 60 .
Claim 6
Dependent Claim
95 words
A process for preparing a compound having the formula M x C q where M is metal, x is greater than 0 and less than about 10, and q is greater than about 60, comprising the steps of: contacting C q with metal in an amount and under reaction conditions effective to produce a compound having the formula M y C q , where y is greater than x; and contacting said M y C q with C q in an amount and under reaction conditions effective to produce said M x C q .
Claim 7
Dependent Claim
95 words
A process for preparing a compound having the formula M x C q where M is metal, x is greater than 0 and less than about 10, and q is greater than about 60, comprising the steps of: contacting C q with metal in an amount and under reaction conditions effective to produce a compound having the formula M y C q , where y is greater than x; and contacting said M y C q with C q in an amount and under reaction conditions effective to produce said M x C q .
Claim 8
Dependent Claim
17 words
The process of claim 4 wherein M is lithium, sodium, potassium, rubidium, cesium, francium, or combinations thereof.
Claim 9
Dependent Claim
14 words
The process of claim 4 wherein M is potassium, rubidium, cesium, or combinations thereof.
Claim 10
Dependent Claim
13 words
The process of claim 4 wherein x is about 2 to about 4.
Claim 11
Dependent Claim
10 words
The process of claim 4 wherein x is about 3.
Claim 12
Dependent Claim
15 words
The process of claim 4 wherein q is 60, 70, 76, 84, 90, or 94.
Claim 13
Dependent Claim
9 words
The process of claim 4 wherein q is 60.
Claim 14
Dependent Claim
22 words
The process of claim 4 wherein 1 equivalent of said C q is contacted with at least 6 equivalents of said metal.
Claim 15
Dependent Claim
26 words
The process of claim 4 wherein said C q is contacted with said metal at a temperature from about 150° C. to about 450 ° C.
Claim 16
Dependent Claim
20 words
The process of claim 4 wherein said C q is contacted with said metal at a temperature about 250° C.
Claim 17
Dependent Claim
13 words
The process of claim 4 wherein y is about 3 to about 12.
Claim 18
Dependent Claim
13 words
The process of claim 4 wherein y is about 4 to about 8.
Claim 19
Dependent Claim
10 words
The process of claim 4 wherein y is about 6.
Claim 20
Dependent Claim
15 words
The process of claim 4 wherein x is about 3 and y is about 6.
Claim 21
Dependent Claim
24 words
The process of claim 17 wherein one equivalent of said M 6 C q is contacted with 1 equivalent of said C q .
Claim 22
Dependent Claim
28 words
The process of claim 4 wherein said M y C q is contacted with said C q at a temperature from about 150° C. to about 450° C.
Claim 23
Dependent Claim
23 words
The process of claim 4 wherein said M y C q is contacted with said C q at a temperature about 350° C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-19 | 1998-03-21 | 1998-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-19 | 2002-03-21 | 2002-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-19 | 2006-03-21 | 2006-09-20 | $7700.00 | Window Closed / Lapsed |