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US4684434A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for the preparation of thin large-area single crystals of diacetylenes and polydiacetylenes

Assignee: Verizon Laboratories Inc
•
Filing: 1985-02-26
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Granted: 1987-08-04
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Expires: 2005-02-26
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Abstract

Abstract A method for preparing thin large-area single crystals of diacetylene monomer represented by the formula: R--CX.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation, is provided. The method involves forming a liquid layer containing pure diacetylene monomer between two opposed surfaces; applying pressure to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces while the liquid layer is kept under constant pressure to form thin large-area single crystals of pure diacetylene monomer. A method for preparing thin large-area single crystals of polydiacetylene is also provided. The method involves forming a liquid layer containing diacetylene monomer represented by the formula: R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation in pure form between two opposed surfaces; applying pressure to the liquid layer disposed between the two opposed surfaces; crystallizing the liquid layer disposed between the two opposed surfaces while the liquid layer is kept under constant pressure to form thin large-area single crystals of pure diacetylene monomer; and exposing a surface of the thin large-area single crystal of diacetylene monomer to ultraviolet or gamma radiation to form thin large-area single crystals of polydiacetylene.

Inventors

  • 👤 Mrinal K. Thakur
  • 👤 Sukant K. Tripathy
  • 👤 Daniel J. Sandman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 13:23
CPC Classifications
C; C30; C30B; C30B7/00; C30B29/00; C30B29/54; C30B29/58; C30B7/005; Y; Y10; Y10S; Y10S117/00; Y10S117/918; Y10S117/919

Claims Analysis

Total Claims: 18
Claim 1
Independent Claim 134 words
A method for preparing thin large-area single crystals of a diacetylene monomer comprising: forming a liquid layer containing molten pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surfaces; applying pressure of at least 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, to form a thin large-area single crystal of diacetylene monomer; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer are all carried out in an inert atmosphere.
Claim 2
Independent Claim 134 words
A method for preparing thin large-area single crystals of a diacetylene monomer comprising: forming a liquid layer containing molten pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surfaces; applying pressure of at least 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, to form a thin large-area single crystal of diacetylene monomer; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer are all carried out in an inert atmosphere.
Claim 3
Dependent Claim 260 words
A method in accordance with claim 1 wherein R and R' are selected from the group of R and R' pairs consisting of R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 H 4 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 and R'=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z is an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 2 ) 8 COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--(CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers.
Claim 4
Independent Claim 399 words
A method for preparing thin large-area single crytals of diacetylene monomer comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are selected from the group R and R' pairs consisting of R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 and R'--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z is an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 2 ) 8 COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers; between two clean, parallel, flat, smooth, opposed surfaces by melting the pure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer between the two opposed surfaces; applying pressure greater than or equal to approximately 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a rate less than or equal to about 0.1° C./minute to form a thin large-area single crystal diacetylene monomer; wherein the step of forming, applying pressure to, and crystallizing the liquid layer are all carried out in an inert atmosphere.
Claim 5
Independent Claim 399 words
A method for preparing thin large-area single crytals of diacetylene monomer comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are selected from the group R and R' pairs consisting of R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 and R'--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z is an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 2 ) 8 COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers; between two clean, parallel, flat, smooth, opposed surfaces by melting the pure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer between the two opposed surfaces; applying pressure greater than or equal to approximately 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a rate less than or equal to about 0.1° C./minute to form a thin large-area single crystal diacetylene monomer; wherein the step of forming, applying pressure to, and crystallizing the liquid layer are all carried out in an inert atmosphere.
Claim 6
Independent Claim 171 words
A method for preparing thin large-area single crystals of diacetylene monomer comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surfaces by melting thepure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer; applying pressure greater than or equal to about 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a cooling rate less than or equal to about 0.1° C./minute to form a thin large-area single crystal of diacetylene monomer; wherein the step of forming, applying pressure to, and crystallizing the liquid layer are all carried out in an inert atmosphere.
Claim 7
Independent Claim 171 words
A method for preparing thin large-area single crystals of diacetylene monomer comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surfaces by melting thepure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer; applying pressure greater than or equal to about 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a cooling rate less than or equal to about 0.1° C./minute to form a thin large-area single crystal of diacetylene monomer; wherein the step of forming, applying pressure to, and crystallizing the liquid layer are all carried out in an inert atmosphere.
Claim 8
Dependent Claim 266 words
A method for preparing thin large-area single crystals of diacetylene monomer in accordance with claim 4 wherein R and R' are selected from the group of R and R' pairs consisting of: R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 H 4 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 R'=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z is an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 8 )COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers.
Claim 9
Dependent Claim 33 words
A method in accordance with claim 5 wherein the pressure applied is greater than or equal to about 5 psi and the cooling rate is less than or equal to about 0.5° C./hour.
Claim 10
Independent Claim 167 words
A method for preparing thin large-area single crystals of polydiacetylene comprising: forming a liquid layer containing molten pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surface; applying pressure of at least 0.5 psi (0.04 kg.cm -2 ) to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, to a form a thin large-area single crystal of diacetylene monomer; and exposing the thin large-area single crystal of diacetylene monomer to ultraviolet or gamma radiation to form a thin large-area single crystal of polydiacetylene; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer and exposing the monomer to radiation are all carried out in an inert atmosphere.
Claim 11
Independent Claim 167 words
A method for preparing thin large-area single crystals of polydiacetylene comprising: forming a liquid layer containing molten pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surface; applying pressure of at least 0.5 psi (0.04 kg.cm -2 ) to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, to a form a thin large-area single crystal of diacetylene monomer; and exposing the thin large-area single crystal of diacetylene monomer to ultraviolet or gamma radiation to form a thin large-area single crystal of polydiacetylene; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer and exposing the monomer to radiation are all carried out in an inert atmosphere.
Claim 12
Dependent Claim 260 words
A method in accordance with claim 7 wherein R and R' are selected from the group of R and R' pairs consisting of R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 H 4 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 and R'=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z is an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 2 ) 8 COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers.
Claim 13
Independent Claim 430 words
A method for preparing thin large-area single crystals of polydiacetylene comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula: R--C.tbd.C--C.tbd.C--R' wherein R and R' are selected from the group R and R' pairs consisting of R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 H 4 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 and R'=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z in an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 2 ) 8 COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers; between two clean, parallel, flat, smooth, opposed surfaces by melting the pure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer between the two opposed surfaces; applying pressure greater than or equal to approximately 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a cooling rate less than or equal to about 0.1° C./minute to form a thin large-area single crystal of diacetylene monmer; and exposing the thin large-area single crystal of diacetylene monomer to actinic radiation to form a thin large-area single crystal of polydiacetylene; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer and exposing the monomer to radiation are all carried out in an inert atmosphere.
Claim 14
Independent Claim 430 words
A method for preparing thin large-area single crystals of polydiacetylene comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula: R--C.tbd.C--C.tbd.C--R' wherein R and R' are selected from the group R and R' pairs consisting of R=--CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 H 4 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 and R'=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z in an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 2 ) 8 COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers; between two clean, parallel, flat, smooth, opposed surfaces by melting the pure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer between the two opposed surfaces; applying pressure greater than or equal to approximately 0.5 psi to the liquid layer disposed between the two opposed surfaces; and crystallizing the liquid layer disposed between the two opposed surfaces, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a cooling rate less than or equal to about 0.1° C./minute to form a thin large-area single crystal of diacetylene monmer; and exposing the thin large-area single crystal of diacetylene monomer to actinic radiation to form a thin large-area single crystal of polydiacetylene; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer and exposing the monomer to radiation are all carried out in an inert atmosphere.
Claim 15
Independent Claim 199 words
A method for preparing thin large-area single crystals of polydiacetylene comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surfaces by melting the pure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer; applying pressure greater than or equal to about 0.5 psi to the liquid layer disposed between the two opposed surfaces; crystallizing the liquid layer disposed between the two opposed surface, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a cooling rate less than or equal to about 0.1° C./minute to form thin large-area single crystal of diacetylene monomer; and exposing the thin large-area single crystal of diacetylene monomer to ultraviolet or gamma radiation to form a thin large-area single crystal of polydiacetylene; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer and exposing the monomer to radiation are all carried out in an inert atmosphere.
Claim 16
Independent Claim 199 words
A method for preparing thin large-area single crystals of polydiacetylene comprising: forming a liquid layer containing pure diacetylene monomer represented by the formula R--C.tbd.C--C.tbd.C--R' wherein R and R' are side groups selected such that the diacetylene monomer is polymerizable by a 1,4-addition solid state reaction upon exposure to actinic radiation between two clean, parallel, flat, smooth, opposed surfaces by melting the pure diacetylene monomer between the two opposed surfaces to form a molten diacetylene monomer layer; applying pressure greater than or equal to about 0.5 psi to the liquid layer disposed between the two opposed surfaces; crystallizing the liquid layer disposed between the two opposed surface, while the liquid layer is kept under constant pressure of at least 0.5 psi, by cooling the molten diacetylene monomer layer at a cooling rate less than or equal to about 0.1° C./minute to form thin large-area single crystal of diacetylene monomer; and exposing the thin large-area single crystal of diacetylene monomer to ultraviolet or gamma radiation to form a thin large-area single crystal of polydiacetylene; wherein the steps of forming, applying pressure to, and crystallizing the liquid layer and exposing the monomer to radiation are all carried out in an inert atmosphere.
Claim 17
Dependent Claim 265 words
A method for preparing thin large-area single crystals of polydiacetylene in accordance with claim 10 wherein R and R' are selected from the group of R and R' pairs consisting of: R=CH 2 OSO 2 C 6 H 4 CH 3 and R'=--CH 2 OSO 2 C 6 H 4 CH 3 ; R=--CH 2 OCONHC 6 H 5 and R'=--CH 2 OCONHC 6 H 5 ; R=--(CH 2 ) 3 OCONHC 6 H 5 and R'=--(CH 2 ) 3 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 6 H 5 and R'=--(CH 2 ) 4 OCONHC 6 H 5 ; R=--(CH 2 ) 4 OCONHC 2 H 5 and R'=--(CH 2 ) 4 OCONHC 2 H 5 ; R=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 R'=--(CH 2 ) 4 OCONHCH(CH 3 ) 2 ; R=--(CH 2 ) n OCONHCH 2 COOZ and R'=--(CH 2 ) n OCONHCH 2 COOZ, wherein Z is an alkyl or aryl group; R=--CH 2 NC 12 H 8 and R'=--CH 2 NC 12 H 8 ; R=--(CH 2 ) 2 OH and R'=--(CH 2 ) 2 OH; R=--(CH 2 ) 3 OH and R'=--(CH 2 ) 3 OH; R=--(CH 8 )COOCH 3 and R'=--(CH 2 ) 8 COOCH 3 ; R=--CH 2 OH and R'=--CH 3 ; R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COOH, wherein 12<n<16, 1<m<10, and n and m are different integers; and R=--(CH 2 ) n CH 3 and R'=--(CH 2 ) m COO - Li + , wherein 12<n<16, 1<m<10, and n and m are different integers.
Claim 18
Dependent Claim 33 words
A method in accordance with claim 11 wherein the pressure applied is greater than or equal to about 5 psi and the cooling rate is less than or equal to about 0.5° C./hour.

References Cited (Backward Citations)

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