US5019451A
Expired / Lapsed
US
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Non-centrosymmetric, multi-layer Langmuir-Blodgett films
Assignee: Edison Polymer Innovation Corp
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Filing: 1989-04-27
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Granted: 1991-05-28
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Expires: 2009-04-27
Abstract
Abstract Non-centrosymmetric films are shown that exhibit pyroelectric and piezoelectric properties. The films, which comprise alternating layers of omega-tricosenoic acid and omega-tricosenoic amine of up to nine layers thick, and alternatively, layers of polymeric amphiphiles that utilize their liquid crystalline side chains to impose order on the lamiante structures, are useful in constructing devices for measuring temperature and pressure functions.
Inventors
- 👤 Jerome B. Lando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:56
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/20; B05D1/202; B82; B82Y; B82Y30/00; B82Y40/00; C; C09; C09K; C09K2323/00; C09K2323/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A non-centrosymmetric polymerized film structure formed from unsaturated, amphiphilic, polymerizable salts having molecular configurations adapted for ordering in adjacent parallel rows, wherein a plurality of said adjacent ordered parallel rows are positioned in substantially adjacent mono-molecular parallel layers to form said film structure having up to about nine layers, said salts comprising members selected from the group consisting of (1) a terminally unsaturated, straight chain aliphatic acid in association with a terminally unsaturated, straight chain aliphatic amine, and (2) an unsaturated polymerizable salt containing both a polar group and a mesogen, being capable of mesomorphic molecular arrangement.
Claim 2
Dependent Claim
97 words
A non-centrosymmetric polymerized film structure formed from unsaturated, amphiphilic, polymerizable salts having molecular configurations adapted for ordering in adjacent parallel rows, wherein a plurality of said adjacent ordered parallel rows are positioned in substantially adjacent mono-molecular parallel layers to form said film structure having up to about nine layers, said salts comprising members selected from the group consisting of (1) a terminally unsaturated, straight chain aliphatic acid in association with a terminally unsaturated, straight chain aliphatic amine, and (2) an unsaturated polymerizable salt containing both a polar group and a mesogen, being capable of mesomorphic molecular arrangement.
Claim 3
Dependent Claim
26 words
A structure according to claim 1 wherein said salt is a polymerizable salt containing both a polar group and a mesogen capable of mesomorphic molecular arrangement.
Claim 4
Dependent Claim
23 words
A structure according to claim 1 wherein said salt is a methacrylate ester sulfonate, containing a quaternary ammonium ion and a stilbene mesogen.
Claim 5
Dependent Claim
28 words
A structure according to claim 1 wherein said salt is formed from said acid and said amine, said acid being omega-tricosenoic acid, and said amine being omega-tricosenoic amine.
Claim 6
Dependent Claim
20 words
A structure according to claim 4 in which the outermost layers of the laminate are formed from said omega-tricosenoic acid.
Claim 7
Dependent Claim
42 words
A structure according to claim 4 in which said laminate film is formed on a substrate and the outermost layer of the laminate film is formed from said omega--tricosenoic acid, and the aliphatic portion of the innermost layer is adjacent said substrate.
Claim 8
Dependent Claim
19 words
The structure of claim 4 in which said laminate has an electrically conductive electrode positioned adjacent each end thereof.
Claim 9
Dependent Claim
103 words
A non-centrosymmetric polymerized laminate film structure formed from unsaturated, amphiphilic, polymerizable salts having molecular configurations adapted for ordering in adjacent parallel rows, wherein a plurality of said adjacent ordered parallel rows are positioned in substantially adjacent mono-molecular parallel layers to form said film structure having a thickness of from about 25 to about 30 nanometers, said salts comprising members selected from the group consisting of (1) a terminally unsaturated, straight chain aliphatic acid in association with a terminally unsaturated, straight chain aliphatic amine, and (2) an unsaturated polymerizable salt containing both a polar group and a mesogen, being capable of mesomorphic molecular arrangement.
Claim 10
Dependent Claim
103 words
A non-centrosymmetric polymerized laminate film structure formed from unsaturated, amphiphilic, polymerizable salts having molecular configurations adapted for ordering in adjacent parallel rows, wherein a plurality of said adjacent ordered parallel rows are positioned in substantially adjacent mono-molecular parallel layers to form said film structure having a thickness of from about 25 to about 30 nanometers, said salts comprising members selected from the group consisting of (1) a terminally unsaturated, straight chain aliphatic acid in association with a terminally unsaturated, straight chain aliphatic amine, and (2) an unsaturated polymerizable salt containing both a polar group and a mesogen, being capable of mesomorphic molecular arrangement.
References Cited (Backward Citations)
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