JPWO2020115486A5

JPWO2020115486A5 -

Info

Publication number: JPWO2020115486A5
Application number: JP2021531867A
Authority: JP
Publication date: 2022-11-29
Anticipated expiration: 2039-12-05

Claims

A polymer opal comprising a polymer and an additive, wherein the additive comprises a two-dimensional (2D) material and/or carbon nanotubes, and the weight ratio of the polymer to the additive is 100:0.001-100. : polymer opal, which is 0.1.

The volume ratio of said polymer to said additive is 100:0.0005 to 100:0.05, 100:0.001 to 100:0.01, 100:0.0025 to 100:0.0075 or 100: The polymer opal of claim 1, which is 0.004-100:0.006.

The additive comprises a 2D material , and/or the 2D material comprises a plurality of particles having an average thickness of less than 50 nm and an average size of the largest lateral dimension of less than 30 μm, and/or 3. A polymer opal according to claim 1 or 2 , wherein the 2D material is selected from the group consisting of graphene, hexagonal boron nitride (h-BN) and transition metal dichalcogenides .

A polymeric opal according to any one of claims 1 to 3 , comprising a surfactant.

5. The polymeric opal of claim 4 , wherein said surfactant comprises a nonionic surfactant.

The nonionic surfactant is

(where n is an integer from 1 to 50) and/or polysorbate ,
6. Polymer opal according to claim 5, wherein the non-ionic surfactant may comprise Triton X-100 and/or Polysorbate 80 .

The volume ratio of said polymer to said nonionic surfactant is 100:0.0001 to 100:2, 100:0.001 to 100:1, 100:0.01 to 100:0.75 or 100:0.001 to 100:1. Polymer opal according to any of claims 5 or 6 , which is 0.4-100:0.6.

The dry glass transition temperature (T _g ) of the polymer is between 0 and 100° C. , and/or the polymer comprises a plurality of particles with an average particle size of 50 nm to 1000 nm, and/or the polymer A polymeric opal according to any one of claims 1 to 7, which has carboxylic acid groups .

contains interstitial fluid and/or the polymer opal contains 0.5 wt% to 30 wt% interstitial fluid,
wherein said interstitial fluid may contain water, alcohol or amine;
Polymer opal according to any one of claims 1-8 .

comprising a polymer coating layer and/or exhibiting a stopband at wavelengths between 200 nm and 1000 nm;
The polymer coating layer may be configured to change the evaporation rate of the interstitial fluid.
Polymer opal according to any one of claims 1-9.

A dispersion comprising a polymer and an additive in a solvent, wherein the additive comprises a two-dimensional (2D) material and/or carbon nanotubes, and the volume ratio of the polymer to the additive is 100:0.0001. providing a dispersion that is ~100:0.1;
forming a polymeric opal by evaporating said solvent at a rate that dominates diffusion and settling of said polymer and said additive.

evaporating the solvent at a rate that dominates the diffusion and settling of the polymer and the additive such that the Peclet number (P _e ) is greater than or equal to 0.25 and the settling number (N _s ) is less than 10; and/or the dispersion is maintained at a temperature of 1 to 80° C. and a humidity of 5% to 99%, and/or the dispersion comprises a surfactant .

Photonic papers, jewelry, time-temperature indicators, mechanochromic sensors, waveguides, tissue engineering scaffolds or sensors comprising the polymer opal of any of claims 1-10 .

An anti-counterfeiting kit comprising the photonic paper of claim 13 and a pen containing a solvent.

Polymer opal according to any of claims 1 to 10 as photonic paper, in jewelry, as time-temperature indicator, in mechanochromic sensor, in waveguide, as scaffold for tissue engineering, or Use as a sensor.