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Two-Dimensional (2D) NMR: Overview

Two-Dimensional (2D) NMR: Overview

The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....

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Updated: Jul 29, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Design, synthesis, and application of some two-dimensional materials.

Luwei Zhang¹, Ning Wang¹, Yuliang Li^1,2

¹Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University 27 Shanda Nanlu Jinan 250100 P. R. China wang_ning@sdu.edu.cn ylli@iccas.ac.cn.

Chemical Science

|May 26, 2023

Summary

This review explores two-dimensional (2D) materials, focusing on molecular design and aggregation for enhanced properties. It details fabrication strategies for functional 2D materials in various applications.

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Area of Science:

Materials Science
Nanotechnology
Chemical Engineering

Background:

Two-dimensional (2D) materials are crucial for energy, electronics, catalysis, and biomedical applications.
Practical needs necessitate molecular structure design and aggregation process optimization for 2D materials.
Understanding the link between preparation methods and material properties is key.

Purpose of the Study:

To review recent advancements in 2D materials concerning molecular structure modification and aggregation.
To investigate the correlation between preparation techniques and characteristic properties of 2D materials.
To introduce design strategies for fabricating functional 2D materials from precursor molecules.

Main Methods:

Systematic molecular structure design and aggregation process optimization.
Investigation of intrinsic correlations between preparation methods and properties.
Review of organic synthetic chemistry and self-assembly technologies for 2D material fabrication.

Main Results:

Summarizes research on molecular structure modification and aggregation regulation in 2D materials.
Highlights characteristic properties and device applications of engineered 2D materials.
Details design strategies for creating functional 2D materials from precursors.

Conclusions:

Molecular design and aggregation control are vital for tailoring 2D material properties.
Organic synthesis and self-assembly offer effective routes to functional 2D materials.
This review provides insights for future design and synthesis of advanced 2D materials.