2021
DOI: 10.1002/chem.202103541
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Photo‐ and Electrochemical Dual‐Responsive Iridium Probe for Saccharide Detection

Abstract: Dual detection systems are of interest for rapid, accurate data collection in sensing systems and in vitro testing. We introduce an IrIII complex with a boronic acid receptor site attached to the 2‐phenylpyridine ligand as an ideal probe with photo‐ and electrochemical signals that is sensitive to monosaccharide binding in aqueous solution. The complex displays orange luminescence at 618 nm, which is reduced by 70 and 40 % upon binding of fructose and glucose, respectively. The electro‐chemiluminescent signal … Show more

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Cited by 10 publications
(8 citation statements)
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“…The immobilization of PFOA or Zonyl-FSA on coated surfaces was measured by TOF-SIMS, which is a highly surface-sensitive method capable of analyzing the top 1–3 nm of a substrate . The primary ion beam used for ToF-SIMS analysis causes molecular fragmentation of the analyte, and certain species can be identified by their characteristic ions.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The immobilization of PFOA or Zonyl-FSA on coated surfaces was measured by TOF-SIMS, which is a highly surface-sensitive method capable of analyzing the top 1–3 nm of a substrate . The primary ion beam used for ToF-SIMS analysis causes molecular fragmentation of the analyte, and certain species can be identified by their characteristic ions.…”
Section: Resultsmentioning
confidence: 99%
“…Iridium-based luminescent probes have long-lived luminescence, in the range of hundreds of nanoseconds, in the visible region, originating from triplet charge transfer states. The iridium luminescence is responsive to the local microenvironment around the metal complex with changes that affect the rigidity of the complex, polarity, aggregation, and access of oxygen. We have previously anchored cyclometalated iridium complexes on gold solid supports using a thiol active ligand (bpySS), which prevented quenching from the gold surface, and studied the influence of the luminescence signal of the iridium films in the presence of proteins. Herein, we report the development of a novel solid-state luminescence lifetime-sensing platform for PFOA detection based on cyclometalated iridium complexes bearing lipophilic chains of 6 and 12 carbons, respectively, IrC 6 and IrC 12 (Figure ). The hydrocarbon chains provide lipophilic tentacles on the iridium complex, ideal for inducing aggregates or organized self-assembled structures of the cationic iridium complexes.…”
Section: Introductionmentioning
confidence: 99%
“…Compared to reactive molecular chemosensors, indicator replacement analysis boasts several advantages, including simple operation, low cost, flexible design, high sensitivity and accuracy, and high-throughput automated analysis, making it a popular choice for detecting biologically relevant molecules and ions. Because of the high affinity of phenyl boronic acid toward cis -1,2 and cis -1,3-diol [ 22 24 ], saccharide sensing based on an indicator displacement mechanism often involves the boronic acid-appended receptors [ 25 27 ].…”
Section: Boronic Acid-based Sensing Platformmentioning
confidence: 99%
“…Coordination complexes are a useful class of chemical compounds, allowing low energy transitions due to metal to ligand (or ligand to metal) transitions. 175,176 Even if the metals are not directly involved in the transition, a more efficient ISC can still be observed. 177 The earliest examples of near infrared to visible TTA-UC utilise metalloporphyrin complexes, 155 having a high triplet yield.…”
Section: Coordination Complexes In Nir To Visible Tta-ucmentioning
confidence: 99%