Polymers with high internal free volume
First Claim
1. A composition, comprising:
- a ladder polymer or ladder oligomer, said ladder polymer or oligomer comprising an iptycene, wherein the ladder polymer or oligomer is a polymer or oligomer having a backbone that can only be severed by breaking at least two bonds.
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Abstract
Shape-persistent organic materials, including polymers, with large degrees of interior free volume are described, along with behaviors and phenomena enabled by their unique properties. One class of such a material is built up from triptycene base moieties wherein three benzene rings are bridged together about a [2.2.2] tricyclic ring system. These units can be assembled into discreet molecules and polymers. These materials and/or formulations thereof with liquid crystals or polymers are useful for the complexation of chemicals and/or polymers; they have very low dielectric constants for use as coatings in dielectric circuits, they provide additional ordering mechanisms in liquid crystals, and they display unusual mechanical responses when subjected to electrochemical, chemical, or mechanical stimuli.
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Citations
46 Claims
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1. A composition, comprising:
a ladder polymer or ladder oligomer, said ladder polymer or oligomer comprising an iptycene, wherein the ladder polymer or oligomer is a polymer or oligomer having a backbone that can only be severed by breaking at least two bonds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- 31. A composition comprising a first, porous, shape persistent polymer and a second, flexible polymer forming an interpenetrating network, the second polymer permeating the pores of the first polymer, wherein the first polymer and the second polymer have different structures and are not covalently bound to each other.
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35. A device comprising:
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a chromophore; and a shape-persistent molecule having at least 20% free volume; the device constructed and arranged to be capable of moving the chromophore from a first orientation to a second orientation upon application to the chromophore of a source of external energy, wherein the source of external energy is an electric, magnetic, optical, acoustic, electromagnetic, or mechanical field. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification