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Applications Of NMR In Biology

Applications Of NMR In Biology

Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.

2D NMR: Overview of Heteronuclear Correlation Techniques

2D NMR: Overview of Heteronuclear Correlation Techniques

Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other...

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Updated: Dec 20, 2025

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Nanoparticle-assisted NMR spectroscopy: A chemosensing perspective.

Federico De Biasi¹, Fabrizio Mancin¹, Federico Rastrelli¹

¹Department of Chemical Sciences, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy.

Progress in Nuclear Magnetic Resonance Spectroscopy

|May 31, 2020

Summary

Nuclear Magnetic Resonance (NMR) chemosensing uses nanoparticles to directly detect specific compounds in mixtures. This advanced technique enhances signal extraction for accurate identification and quantification in diagnostics and beyond.

Keywords:

Complex mixtures DOSY Gold nanoparticles Matrix-assisted NMR Mixture analysis Monolayer-protected nanoparticles NMR diffusometry NOE Saturation transfer difference

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Published on: November 1, 2016

Area of Science:

Analytical Chemistry
Nanotechnology
Biomedical Sensing

Background:

Current sensing methods often rely on indirect analyte detection, necessitating comparison with standards.
Achieving both identification and quantification while minimizing false positives remains a challenge in mixture analysis.

Purpose of the Study:

To present NMR chemosensing as a method for direct analyte detection and structural elucidation.
To demonstrate the use of nanoparticles with NMR techniques for selective signal extraction from complex mixtures.

Main Methods:

Utilizing relaxation- and diffusion-based Nuclear Magnetic Resonance (NMR) techniques.
Employing monolayer-protected nanoparticles, particularly gold nanoparticles, as supports for supramolecular receptors.
Exploiting nanoparticle-analyte interactions to manipulate NMR signals and transfer magnetization.

Main Results:

Demonstrated the ability to edit ¹H NMR spectra to extract signals of specific target compounds.
Showcased the versatility of nanoparticle coatings in creating tailored binding sites for diverse molecules.
Achieved detection of relevant analytes in the micromolar concentration range.

Conclusions:

NMR chemosensing, enhanced by nanoparticles, offers unequivocal identification and quantification of analytes.
This approach enables the identification of unknown species and holds significant potential for diagnostic applications.