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Controllable and reversible pH-responsive rollable 2D nanostructures

A responsive, two-dimensional nanotechnology, applied in specific nanostructure formation, nanotechnology, ion implantation plating, etc., can solve problems such as insufficient understanding, and achieve the effect of improving properties

Inactive Publication Date: 2018-03-27
OKINAWA INST OF SCI & TECH SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The significance of multiscale structure-property relationships in such organisms is that they are quite pronounced in response to stimuli, but the relationship is not fully understood (NPL 8-11)

Method used

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  • Controllable and reversible pH-responsive rollable 2D nanostructures
  • Controllable and reversible pH-responsive rollable 2D nanostructures
  • Controllable and reversible pH-responsive rollable 2D nanostructures

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Embodiment Construction

[0095] What is behind nature's extraordinary ability to respond to external stimuli with high efficiency? To answer this question, the present disclosure describes the efficient design and facile synthesis of two-dimensional (2D) nanosheets (NS) that mimic the musculoskeletal (MS) of living systems. The NS of the present invention consists of a metallic skeleton embedded in chains of pH-sensitive branched polymers (NPL1-7) that act as muscles. These NSs are rigid enough to retain their 2D properties under acidic conditions, yet flexible enough to undergo a fully reversible and controllable shape transition to nanocoils under alkaline conditions (note that coils are not spontaneous and for all protonated / pH states have stable structures). Remarkably, this occurs despite the mass ratio of metal to polymer carrying it being greater than 40. The present disclosure demonstrates that this is only feasible for bone in the form of permeable nanostructured films, where a coupling ef...

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Abstract

A two-dimensional nano-sheet that is foldable in response to a surrounding pH value includes a polyethyleneimine (PEI) chain taking a two-dimensional form; and a plurality of domains made of gold, attached to the PEI chain, the plurality of domains of gold forming a percolating gold film on the PEI chain.

Description

technical field [0001] The present invention relates to the design and assembly of pH-responsive rollable 2-dimensional nanostructures. This application is hereby incorporated by reference in its entirety in US Provisional Application Serial No. 61 / 942,274, filed February 20, 2014. Background technique [0002] There are many examples in nature of how the properties of living systems are related to (determined by) their complex multiscale (hierarchical macro / micro / nano) structures, such as the self-cleaning effect of lotus (Nelumbo nucifera) leaves, butterfly wings and The color of peacock feathers, the adhesive properties of gecko feet, the anisotropic wetting function of rice leaves, and the anti-reflection properties of some insect wings and eyes, etc. Inspired by such living systems, much research has been carried out, leading to real-world technologies such as coatings with self-cleaning properties, photonic structures capable of acting as optical waveguides and splitt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B32B5/00B32B7/02C23C14/34
CPCC23C14/00B82B3/0038B82Y40/00C23C14/205B29C37/0025B29C61/06B29K2079/085
Inventor 金政焕M·博拉V·达尔·辛格A·D·盖莱P·格拉玛蒂考普洛斯M·I·索万
Owner OKINAWA INST OF SCI & TECH SCHOOL