Nanocatenane Structure for Structural Stability

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Solution Overview

Problem

Existing nanosystems with excellent optical properties face challenges in maintaining assembled structures under various conditions due to the presence of functional molecules, leading to instability and loss of optical properties.

Innovation Solution

A nanocatenane structured body is developed, comprising at least two interlocked ring structured bodies with a core and shell configuration, chemically bonded at a joining region, and modified with DNA, proteins, or ligands for enhanced stability and optical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If functional molecules are used to build specific geometric structures, then optical properties are improved, but structural stability under various conditions deteriorates

Engineering Contradiction:

Improveoptical propertiesVSAvoidstructural stability

Core Design Contradiction:

Illumination intensityVSStability of the object's composition

Solution Approach 1:

The patent employs composite materials by combining metal or semiconductor cores with shell structures to form nanocatenane assemblies. This composite approach enables the system to simultaneously achieve excellent optical properties from the plasmonic nanostructures and enhanced structural stability from the robust core-shell architecture, resolving the contradiction between optical performance and structural stability under various conditions

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent segments the nanocatenane structure into distinct core and shell components, where the core provides structural stability and the shell provides optical functionality. This segmentation allows each component to optimize its specific function while working together as an integrated system, maintaining both optical properties and structural stability

Inventive Principle:

Principle #1Segmentation

2Stability of the object's composition

If unbreakable coupling between constituent nanostructures is implemented, then structural stability is improved, but device complexity increases

Engineering Contradiction:

Improvestructural stabilityVSAvoiddevice complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent implements the nested doll principle by placing one nanoring inside another to form interlocked nanocatenane structures. This nesting approach creates unbreakable coupling between constituent nanostructures through mechanical interlocking, achieving enhanced structural stability while the self-assembly process naturally manages the complexity of forming these coupled structures

Inventive Principle:

Principle #7Nested doll (Nesting)

3Manufacturing precision

If chemically bonded interlocked ring structures are synthesized, then manufacturing precision is improved, but ease of manufacture deteriorates

Engineering Contradiction:

Improvestructural precisionVSAvoidease of manufacture

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent applies preliminary action by first forming individual nanorings with predetermined geometries and functionalizations before assembling them into interlocked nanocatenane structures. This stepwise approach, including preliminary surface modification of nanorings with complementary functional groups, enables precise control over the final structure while simplifying the overall manufacturing process through modular preparation

Inventive Principle:

Principle #10Preliminary action

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

The nanocatenane structured body exhibits high selectivity in synthesis and chirality, enabling the conversion of linear force into rotational mechanical motion through light-induced thermal operations, effectively controlling circular dichroism of nanostructures.

Implementation Method 1

the interlocked ring structured bodies are chemically bonded at a joining region

Methodology Applied

Scientific EffectChemical bonding: Chemical Bonding

Implementation Method 2

a joining region of the interlocked ring structured body is provided with a cross-linking molecule generated by the binding of at least one of the DNA, protein, or ligand

Methodology Applied

Scientific EffectCross-linking:

Implementation Method 3

the nanocatenane structured body converts a linear force into a rotational mechanical motion by a light-induced thermal operation

Methodology Applied

Scientific EffectLight-induced thermal operation:

Implementation Method 4

converts a linear force into a rotational mechanical motion by a light-induced thermal operation

Methodology Applied

Scientific EffectPhotothermal conversion:

Implementation Method 5

effectively controlling circular dichroism of nanostructures

Methodology Applied

Scientific EffectCircular dichroism:

Implementation Method 6

exhibiting chirality

Methodology Applied

Scientific EffectOptical activity:

Data Source

PatentUS20250155279A1Nanocatenane structure and nanomachine including nanocatenane structure

Publication Date: 2025.05.15 SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

AI summary

Provided according to an embodiment of the present subject matter is a nanocatenane structure including at least two chained ring structures, each structure consisting of a core and a shell covering the core, wherein the chained ring structures are chemically coupled in a joining area.