Aqua-friendly organometallic Ir–Pt complexes: pH-responsive AIPE-guided imaging of bacterial cells. Issue 8 (30th January 2023)

• Record Type: Journal Article
• Authors: Borah, Sakira Tabassum; Das, Bishnu; Biswas, Prakash; Mallick, Amirul I.; Gupta, Parna
• Is Part Of: Dalton transactions. Volume 52:Issue 8(2023)
• Page Start: 2282
• Page End: 2292
• Publication Date: 2023-01-30
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt03390a
• Languages: English
• ISSNs: 1477-9226

Abstract

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. 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 ( 3 MMLCT) 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.