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A near-IR luminescent ratiometric ytterbium pH probe

Shuvaev, Sergey; Parker, David

A near-IR luminescent ratiometric ytterbium pH probe Thumbnail


Sergey Shuvaev


The hypersensitive 2F5/2 to 2F7/2 transition of Yb3+ can be used to monitor perturbations of the coordination sphere in ytterbium(III) complexes. An envelope of Stark components gives rise to a relatively broad and asymmetric emission band, whilst changes in their relative intensity and energy enable a ratiometric response. We report a new ytterbium complex with a sulphonamide arm that binds reversibly to Yb3+ as a function of pH, giving rise to significant pH dependent changes in the Yb emission spectrum.

Journal Article Type Article
Acceptance Date Mar 30, 2019
Online Publication Date Mar 30, 2019
Publication Date Apr 14, 2019
Deposit Date Apr 26, 2019
Publicly Available Date Mar 5, 2020
Journal Dalton Transactions
Print ISSN 1477-9226
Electronic ISSN 1477-9234
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 48
Issue 14
Pages 4471-4473
Public URL


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