Issue 7, 2022

A triphenylamine-based aggregation-enhanced emission probe for viscosity and polarity analysis of lubricating oils

Abstract

Lubricating oils offers abundant information about the operating state of machines. In this work, a donor–acceptor aggregation-enhanced emission fluorescent molecule, (Z)-4-(1-cyano-2-(4-(diphenylamino)phenyl)vinyl)benzonitrile (CPA–TPA), was synthesized to investigate its function to sense the viscosity and polarity of lubricant base oils. The results indicated that the molecule showed steadily-increased fluorescence emission with the base oil viscosity. In a mixture of poly-α-olefin/ester base oils, its optimal emission gradually red-shifted with the ester oil fraction, i.e., the polarity of the lubricant. A good correlation could be established between the emission intensity of the probe and the oil viscosity or between the optimal emission wavelength and the oil polarity. This demonstrates a dual-response fluorescent probe used for lubricating oil analysis and opens a new opportunity to develop a molecule-based method for the evaluation of lubricating oil quality.

Graphical abstract: A triphenylamine-based aggregation-enhanced emission probe for viscosity and polarity analysis of lubricating oils

Supplementary files

Article information

Article type
Paper
Submitted
19 Nov 2021
Accepted
24 Dec 2021
First published
27 Dec 2021

Anal. Methods, 2022,14, 694-699

A triphenylamine-based aggregation-enhanced emission probe for viscosity and polarity analysis of lubricating oils

P. Jia, F. Wang, W. Zeng and Z. Wang, Anal. Methods, 2022, 14, 694 DOI: 10.1039/D1AY01957K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements