Hose with tunable flexibility using cyclizable, photochromic molecules

Patent metadata

Field	Value
Publication number	US-10451195-B2
Application number	US-201615334097-A
Country	US
Kind code	B2
Filing date	Oct 25, 2016
Priority date	Oct 25, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

Embodiments of the disclosure generally provide compositions and methods related to articles that display reversible photoresponsive behavior.

First claim

The invention claimed is:

1. An article, comprising:
a polymer consisting of repeating units that are derived from
(a) a photoreactive monomer represented by formula

 or a combination thereof, wherein at least one of R 1 and R 2 is selected from the group consisting of

 and a combination thereof, and
(b) a non-photoreactive monomer,

the polymer covalently bonded to a conducting polymer selected from the group consisting of a polyphenylene, a polypyrene, a polyazulene, a polynaphthalene, a polypyrrole, a polycarbazole, a polyindole, a polyazepine, a polyaniline, a polythiophene, and a combination thereof, the polymer having a modulus that changes at a time that the polymer is irradiated with ultraviolet or visible light.

2. The article of claim 1 , wherein the photoreactive monomer represented by formula (I) absorbs ultraviolet radiation of wavelengths from 100 nm to 400 nm.

3. The article of claim 2 , wherein the polymer has at least one photoreaction product of ultraviolet radiation absorption, wherein the at least one photoreaction product is the photoreactive monomer represented by formula (II).

4. The article of claim 3 , wherein the at least one photoreaction product is a product of a (2π+2π) cycloaddition reaction.

5. The article of claim 2 , wherein the modulus increases upon radiation absorption.

6. The article of claim 1 , wherein the photoreactive monomer represented by formula (II) absorbs visible radiation of wavelengths from 400 nm to 700 nm.

7. The article of claim 6 , wherein the modulus decreases upon light absorption.

8. The article of claim 1 , wherein the article is a tube.

9. A pump comprising the article of claim 8 .

10. A microfluidic device comprising the article of claim 8 .

11. The article of claim 1 , wherein the article is cylindrical.

12. The article of claim 1 , comprising an electrical semiconductor.

13. The article of claim 1 , wherein the non-photoreactive monomer is selected from the group consisting of ethylene, propylene, ethylidene norbornene, butadiene, urethane, vinylchloride, and a combination thereof.

14. An article, comprising:
a polymer consisting of repeating units that are derived from
(a) a photoreactive monomer represented by formula

 or a combination thereof, wherein at least one of R 1 and R 2 is selected from the group consisting of

 and a combination thereof, and
(b) a non-photoreactive monomer selected from the group consisting of ethylene, propylene, a diene, urethane, vinylchloride, a silicon containing group, and a combination thereof,
wherein when at least one of R 1 and R 2 is

 the non-photoreactive monomer is a silicon containing group,

the polymer having a modulus that changes at a time that the polymer is irradiated with ultraviolet or visible light.

15. The article of claim 14 , wherein the diene is selected from the group consisting of ethylidene norbornene, butadiene, and a combination thereof.

16. An article, comprising:
a polymer consisting of repeating units that are derived from
(a) a photoreactive monomer represented by formula

 or a combination thereof, wherein at least one of R 1 and R 2 is selected from the group consisting of

 and a combination thereof, and
(b) a non-photoreactive monomer selected from the group consisting of ethylene, propylene, a diene, vinylchloride, and a combination thereof,

the polymer having a modulus that changes at a time that the polymer is irradiated with ultraviolet or visible light.

17. The article of claim 14 , wherein the silicon containing group is

wherein n is the number of the repeating units.

Assignees

• IBM

Inventors

• Czaplewski Sarah K
• Kobilka Brandon M
• Wertz Jason T
• Zhang Jing

Classifications

• F16K99/004

  using radiation · CPC title

• C08F216/125

  Monomers containing two or more unsaturated aliphatic radicals, e.g. trimethylolpropane triallyl ether or pentaerythritol triallyl ether · CPC title

• C08L83/16

  in which all the silicon atoms are connected by linkages other than oxygen atoms · CPC title

• F16K99/0042 Primary

  Electric operating means therefor · CPC title

• C08L45/00

  Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers (of cyclic anhydrides or imides C08L35/00; of cyclic esters of polyfunctional acids C08L31/00) · CPC title