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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: Feb 19, 2026

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Recent progress in two-dimensional inorganic quantum dots.

Yuanhong Xu¹, Xiaoxia Wang, Wen Ling Zhang

¹College of Life Sciences, Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, China. yhxu@qdu.edu.cn.

Chemical Society Reviews

|November 9, 2017

Summary

This summary is machine-generated.

Two-dimensional quantum dots (QDs) from inorganic materials offer stability and tunable properties. This review highlights their synthesis, characteristics, and applications in bioimaging, therapy, sensing, and optoelectronics.

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Area of Science:

Materials Science
Nanotechnology
Chemistry

Background:

Two-dimensional (2D) inorganic materials-based quantum dots (QDs) are emerging nanomaterials with unique properties.
Despite being in early development, 2D QDs exhibit high chemical stability, aqueous dispersibility, and excellent optical characteristics.

Purpose of the Study:

To provide a comprehensive review of existing 2D QDs derived from various inorganic materials.
To critically analyze their categories, synthesis methods, properties, functionalization strategies, and diverse applications.

Main Methods:

Literature review of 2D QDs based on graphene, phosphorene, silicene, carbides, nitrides, transition metal dichalcogenides, transition metal oxides, and MXenes.
Focus on advancements in bioimaging, cancer therapy, fluorescent sensing, optoelectronics, catalysis, and energy applications since 2015.

Main Results:

Detailed overview of 2D QDs synthesized from diverse 2D inorganic materials.
Highlighting key properties such as optical, chemical, and biological characteristics.
Summarizing applications in advanced fields including medicine, electronics, and energy storage.

Conclusions:

2D QDs represent a promising class of nanomaterials with significant potential across multiple scientific and technological domains.
This review offers valuable insights and guidance for future research and development in 2D QDs.
The unique attributes of 2D QDs position them for meeting increasing demands in various applications.