Titanium Ligand-Modified Black Phosphorus Oxidation Resistance
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Solution Overview
Problem
Black phosphorus is susceptible to oxidation in air or water, leading to structural damage and performance loss due to its reactivity with oxygen, which existing surface coatings do not adequately address.
Innovation Solution
A titanium ligand-modified black phosphorus complex is formed by coordinating titanium sulfonate with the lone pair electrons of phosphorus atoms, preventing them from bonding with oxygen and enhancing antioxidant capacity without altering the inherent properties of black phosphorus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If black phosphorus is exposed to air or water, then it can be used for its electronic, optical, and other properties, but it undergoes oxidation leading to structural damage and performance loss
Solution Approach 1:
A titanium ligand is introduced as an intermediary substance between black phosphorus and the oxidizing environment (oxygen/water). The ligand coordinates to phosphorus atoms through lone pair electrons, forming a protective interface that prevents direct contact between phosphorus and oxygen, thereby eliminating the oxidation pathway while maintaining the underlying phosphorus structure intact
Solution Approach 2:
The invention creates a composite structure consisting of black phosphorus core combined with titanium ligand coating. This composite material integrates the beneficial properties of both components: the electronic and optical properties of black phosphorus are preserved while the titanium ligand provides oxidation resistance, solving the contradiction between reactivity and stability
2Reliability
If surface coatings are applied to black phosphorus to prevent oxidation, then antioxidant capacity is improved, but the inherent properties of black phosphorus may be altered
Solution Approach 1:
The titanium ligand modification is applied selectively and locally to the surface of black phosphorus, specifically targeting the phosphorus atoms that are most susceptible to oxidation. This localized modification provides oxidation protection at the critical interface while leaving the bulk properties and inherent characteristics of black phosphorus unchanged, maintaining its electronic and optical properties
Solution Approach 2:
The invention changes the chemical environment parameter at the surface of black phosphorus by introducing titanium ligands with specific coordination chemistry properties. This parameter change (surface chemical composition) enhances antioxidant capacity while the bulk parameters (electronic structure, optical properties) remain preserved, achieving protection without altering inherent properties
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 titanium ligand-modified black phosphorus significantly enhances its antioxidant capacity, preventing oxidation while maintaining its original properties and stability, making it suitable for various applications.
Implementation Method 1
coordinating titanium sulfonate with the lone pair electrons of phosphorus atoms, preventing them from bonding with oxygen
Data Source
AI summary
The present invention provides a titanium ligand-modified black phosphorus and the preparation method and use thereof. The titanium ligand-modified black phosphorus is a complex of black phosphorus and a titanium ligand having a structure represented by formula (I):wherein in the formula (I), R1 comprises C1-C6 alkyl, or phenyl optionally further substituted with 0 to 5 groups each independently selected from halogen atom, C1-C6 alkyl, nitro, hydroxy, amino or C1-C3 alkoxy; the C1-C6 alkyl or C1-C3 alkoxy is optionally further substituted with 0 to 3 groups each independently selected from halogen atom, nitro, hydroxy, amino, methyl, ethyl or n-propyl. The titanium ligand-modified black phosphorus of the present invention is not likely oxidized without changing inherent properties of the black phosphorus, and the antioxidant capacity is greatly enhanced.