Issue 8, 2023

Aqua-friendly organometallic Ir–Pt complexes: pH-responsive AIPE-guided imaging of bacterial cells

Abstract

In this work, the aggregation-induced photoluminescence emission (AIPE) of three water-soluble heterobimetallic Ir–Pt complexes was reported with insight into their photophysical and electrochemical properties and imaging of bacterial cells. An alkyne appended Schiff's base L, bridges bis-cyclometalated iridium(III) and platinum(II) terpyridine centre. The Schiff's base (N–N fragment) serves as the ancillary ligand to the iridium(III) centre, while the alkynyl end is coordinated to platinum(II). The pH and ionic strength influence the aggregation kinetics of the alkynylplatinum(II) fragment, leading to metal–metal and π–π interactions with the emergence of a triplet metal–metal-to-ligand charge transfer (3MMLCT) emission. The excellent reversibility and photostability of aggregation-induced emission (AIE) of these aqua-friendly complexes were tested for their ability to sense and selectively image E. coli cells at various pH values.

Graphical abstract: Aqua-friendly organometallic Ir–Pt complexes: pH-responsive AIPE-guided imaging of bacterial cells

Supplementary files

Article information

Article type
Paper
Submitted
19 loka 2022
Accepted
14 tammi 2023
First published
16 tammi 2023

Dalton Trans., 2023,52, 2282-2292

Aqua-friendly organometallic Ir–Pt complexes: pH-responsive AIPE-guided imaging of bacterial cells

S. T. Borah, B. Das, P. Biswas, A. I. Mallick and P. Gupta, Dalton Trans., 2023, 52, 2282 DOI: 10.1039/D2DT03390A

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