Amphiphilic Substance Induced 2D Material Scroll Formation

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Solution Overview

Problem

Current methods face challenges in forming one-dimensional scrolls from two-dimensional materials with open ends, particularly in incorporating desired materials within carbon nanotubes and removing them effectively.

Innovation Solution

A method involving the use of amphiphilic substances to induce the roll-up of two-dimensional materials, forming scrolls with open ends, where the amphiphilic substances are self-assembled and can be removed using solvent or thermal treatments to create hollow structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If carbon nanotubes are used to encapsulate desired materials, then material incorporation is achieved, but difficulty in preparing nanotubes with open ends and removing materials arises

Engineering Contradiction:

Improvematerial incorporationVSAvoidpreparation of nanotubes with open ends

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

The patent extracts the amphiphilic substance from the final composite structure through solvent treatment or thermal processing. The amphiphilic substance serves as a temporary template during synthesis but is subsequently removed to create hollow scrolls with open ends, enabling material incorporation without the manufacturing difficulties of closed nanotubes

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The amphiphilic substance acts as an intermediary agent that facilitates the formation of hollow scrolls during synthesis. It temporarily occupies the interior space and guides the rolling structure formation, then is removed to leave behind the desired hollow structure with open ends for subsequent material loading

Inventive Principle:

Principle #24Intermediary (Mediator)

2Shape

If amphiphilic substances are used to induce roll-up of two-dimensional materials, then formation of one-dimensional scrolls with open ends is achieved, but complexity of the synthesis process increases

Engineering Contradiction:

Improveformation of one-dimensional scrollsVSAvoidsynthesis process complexity

Core Design Contradiction:

ShapeVSDevice complexity

Solution Approach 1:

The amphiphilic substance induces self-assembly and self-scrolling of the two-dimensional material through its unique molecular structure with hydrophilic and hydrophobic regions. The system automatically organizes itself into hollow scroll structures without requiring complex external templating or multi-step fabrication processes

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent utilizes changes in processing parameters such as solvent type, temperature, and concentration to control the self-assembly behavior of amphiphilic substances and the resulting scroll formation. By adjusting these parameters, the synthesis process becomes more controllable and less complex

Inventive Principle:

Principle #35Parameter changes

3Shape

If hollow structures are created by removing amphiphilic substances, then open-ended scrolls are formed, but additional processing steps are required

Engineering Contradiction:

Improvehollow structure formationVSAvoidprocessing time

Core Design Contradiction:

ShapeVSProductivity

Solution Approach 1:

The removal of amphiphilic substances is achieved through phase transition processes such as dissolution in solvents or thermal decomposition. These phase transitions occur under mild conditions and can be completed in a single processing step, minimizing additional time requirements while successfully creating the hollow structure

Inventive Principle:

Principle #36Phase transitions

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach allows for the easy formation and manipulation of one-dimensional scrolls with open ends, enabling the creation of hollow structures and enhancing the processing of two-dimensional material composites.

Implementation Method 1

the amphiphilic substance is self-assembled

Methodology Applied

Scientific EffectSelf-assembly: Self-Assembly

Implementation Method 2

an amphiphilic substance having a hydrophilic portion and a hydrophobic portion on the two-dimensional material

Methodology Applied

Scientific EffectHydrophobic interaction: Hydrophobe

Implementation Method 3

which has van der Waals interactions between adjacent two-dimensional material sheets

Methodology Applied

Scientific EffectVan der Waals force: Van der Waals Force

Implementation Method 4

The providing of the amphiphilic substance may be mixing an amphiphilic substance solution prepared by dissolving the amphiphilic substance in a solvent

Methodology Applied

Scientific EffectDissolution: Solvation

Implementation Method 5

The thermal treatment may be performed at 200 to 800° C.

Methodology Applied

Scientific EffectThermal decomposition: Pyrolysis

Data Source

PatentUS11247904B2Scroll composite having amphiphilic substance inside and method for preparation of the same

Publication Date: 2022.02.15 INDUSTRY UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

AI summary

Provided are a scroll preparing method using a two-dimensional material and a scroll prepared thereby. The scroll preparing method comprises preparing a two-dimensional material. The two-dimensional material is scrolled by providing an amphiphilic substance having a hydrophilic portion and a hydrophobic portion on the two-dimensional material. As a result, a scroll composite including the amphiphilic substance disposed inside a scroll structure is formed.