US4826774A
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Vapocheromic double-complex salts
Assignee: 3M Co
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Filing: 1987-01-30
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Granted: 1989-05-02
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Expires: 2007-01-30
Abstract
Abstract Articles comprise transition metal double-complex salts which contain arenyl isonitrile ligands derivatized with long aliphatic chains, the cation being a tetrakis isonitrile platinum ion and the anion being a tetracyanopalladate ion. These double-complex salts exhibit novel vapochromic effects and are useful as personal and badge monitors, threshold monitors, optical waveguide sensors, chemical field effect transistors, and in related monitoring applications.
Inventors
- 👤 Colleen C. Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:53
CPC Classifications
C; C09; C09K; C09K9/00; C09K9/02; C07; C07F; C07F15/00; C07F15/0006; C07F15/006; C07F15/0086; C09K11/00; C09K11/06; Y; Y10; Y10T; Y10T436/00; Y10T436/17; Y10T436/19; Y10T436/196666; Y10T436/21; Y10T436/212; Y10T436/214; Y10T436/216; Y10T436/23
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
87 words
An article comprising a substrate coated on at least one surface thereof with a continuous or discontinuous layer of a transition metal double-complex salt having a cation and an anion, said salt comprising four arenyl isonitrile ligands, at least one of which contains a long chain aliphatic group, the salt having two metal-containing complex ions, the cation being a tetrakis isonitrile platinum ion and the anion being a tetracyanopalladate ion, each of the ions having a square planar configuration, said article being useful in vapochromic monitoring application.
Claim 2
Dependent Claim
87 words
An article comprising a substrate coated on at least one surface thereof with a continuous or discontinuous layer of a transition metal double-complex salt having a cation and an anion, said salt comprising four arenyl isonitrile ligands, at least one of which contains a long chain aliphatic group, the salt having two metal-containing complex ions, the cation being a tetrakis isonitrile platinum ion and the anion being a tetracyanopalladate ion, each of the ions having a square planar configuration, said article being useful in vapochromic monitoring application.
Claim 3
Dependent Claim
116 words
The article according to claim 1 wherein said complex salt has the formula [(LC.sub.6 H.sub.4 NC).sub.4 Pt].sup.2+ [Pd(CN).sub.4 ].sup.2- wherein C 6 H 4 is a ring structure, and LC 6 H 4 NC is an arenyl isonitrile ligand, wherein L is independently selected from hydrogen and aliphatic groups, with the proviso that: for at least one L which is an aliphatic group the total number of carbon and heteroatoms in L is 8 to 20 wherein the heteroatoms are 0 to 4 unitary S, N, and O atoms, and with the proviso that: L contains a chain of at least 6 linear catenated carbon atoms which is attached to the C 6 H 4 ring.
Claim 4
Dependent Claim
12 words
The article according to claim 2 wherein L is an aliphatic group.
Claim 5
Dependent Claim
14 words
The article according to claim 2 wherein L contains 8 linear catenated carbon atoms.
Claim 6
Dependent Claim
22 words
The article according to claim 2 wherein L is in the para position to the isonitrile group of the arenyl isonitrile ligand.
Claim 7
Dependent Claim
30 words
The article according to claim 2 wherein the heteroatoms included in L are 1 to 4 unitary heteroatoms or heteroatom-containing divalent functional groups selected from the group consisting of ##STR2##
Claim 8
Dependent Claim
14 words
The article according to claim 2 wherein all L are the same aliphatic group.
Claim 9
Dependent Claim
29 words
The article according to claim 1 wherein said double-complex salt is in a dispersion coated as a continuous or discontinuous layer on at least one surface of said substrate.
Claim 10
Dependent Claim
16 words
The article according to claim 8 wherein said substrate is an inert inorganic or organic substrate.
Claim 11
Dependent Claim
22 words
The article according to claim 9 wherein said substrate is selected from the group consisting of alumina, silica, quartz, and combinations thereof.
Claim 12
Dependent Claim
13 words
The article according to claim 9 wherein said substrate is a molecular sieve.
Claim 13
Dependent Claim
11 words
The article according to claim 9 wherein said substrate is paper.
Claim 14
Dependent Claim
17 words
The article according to claim 8 wherein said dispersion comprises said double-complex salt and an organic liquid.
Claim 15
Dependent Claim
24 words
The article according to claim 13 wherein said organic liquid is a non-polar organic liquid, a polar organic liquid, a polymer, or an oil.
Claim 16
Dependent Claim
21 words
The article according to claim 14 wherein said organic liquid is wholly or partially removable to provide a dried vapochromic layer.
Claim 17
Dependent Claim
17 words
The article according to claim 15 wherein said dried vapochromic layer is partially overcoated by a topcoat.
Claim 18
Dependent Claim
11 words
The article according to claim 1 which is a vapochromic monitor.
Claim 19
Dependent Claim
14 words
The article according to claim 17 wherein said vapochromic monitor can be used repeatedly.
Claim 20
Independent Claim
152 words
A method for monitoring an organic vapor in which a transition metal double-complex salt undergoes at least one of a color and fluorescence change in the presence of said organic vapor comprising the step of contacting an article comprising a substrate coated on at least one surface thereof with a continuous or discontinuous layer of at least one transition metal double-complex salt having a cation and an anion, said salt comprising at least one arenyl isonitrile ligand containing a long chain aliphatic group, the salt having two metal-containing complex ions, the cation being a tetrakis isonitrile platinum ion and the anion being a tetracyanopalladate ion, each of the ions having a square planar configuration, with an organic vapor for a time sufficient to effect a color change in said complex salt, wherein said organic vapor is selected from the group consisting of alkanes, aromatics and fluorinated derivatives thereof, freons, and organic acids.
Claim 21
Independent Claim
152 words
A method for monitoring an organic vapor in which a transition metal double-complex salt undergoes at least one of a color and fluorescence change in the presence of said organic vapor comprising the step of contacting an article comprising a substrate coated on at least one surface thereof with a continuous or discontinuous layer of at least one transition metal double-complex salt having a cation and an anion, said salt comprising at least one arenyl isonitrile ligand containing a long chain aliphatic group, the salt having two metal-containing complex ions, the cation being a tetrakis isonitrile platinum ion and the anion being a tetracyanopalladate ion, each of the ions having a square planar configuration, with an organic vapor for a time sufficient to effect a color change in said complex salt, wherein said organic vapor is selected from the group consisting of alkanes, aromatics and fluorinated derivatives thereof, freons, and organic acids.
Claim 22
Dependent Claim
29 words
The method according to claim 19 further comprising the step of drying and stripping said layer of transition metal double-complex salt from the substrate to provide a self-supporting film.
Claim 23
Independent Claim
114 words
A method for monitoring an organic vapor in which the transition metal double-complex salt [(p-C 10 H 21 C 6 H 4 NC) 4 Pt][Pd(CN) 4 ] undergoes at least one of a color and fluorescence change in the presence of an organic vapor that has a total solubility parameter value in the range of 14.9 to 29.0, said method comprising the step of: contacting an article comprising a substrate coated on at least one surface thereof with a continuous or discontinuous layer of [p-C 10 H 21 C 6 H 4 NC) 4 Pt][Pd(CN) 4 ] with said organic vapor for a time sufficient to effect a color change in said complex salt.
Claim 24
Independent Claim
114 words
A method for monitoring an organic vapor in which the transition metal double-complex salt [(p-C 10 H 21 C 6 H 4 NC) 4 Pt][Pd(CN) 4 ] undergoes at least one of a color and fluorescence change in the presence of an organic vapor that has a total solubility parameter value in the range of 14.9 to 29.0, said method comprising the step of: contacting an article comprising a substrate coated on at least one surface thereof with a continuous or discontinuous layer of [p-C 10 H 21 C 6 H 4 NC) 4 Pt][Pd(CN) 4 ] with said organic vapor for a time sufficient to effect a color change in said complex salt.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
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