Bis-cyclometalated Ir(III) complexes with carbazole/triphenylamine donor fragment for oxygen sensing DOI
Hong-Cui Yu, Bo Yu,

Yajiao Song

et al.

Transition Metal Chemistry, Journal Year: 2024, Volume and Issue: 49(4), P. 285 - 292

Published: April 28, 2024

Language: Английский

Dual-Emissive Iridium(III) Complex with Aggregation-Induced Emission: Mechanistic Insights into Electron Transfer for Enhanced Hypoxia Detection in 3D Tumor Models DOI
Annu Agarwal,

Shrikant Sitaram Kirwale,

Ajeet Singh

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Accurate oxygen detection and measurement of its concentration is vital in biological industrial applications, necessitating highly sensitive reliable sensors. Optical sensors, valued for their real-time monitoring, nondestructive analysis, exceptional sensitivity, are particularly suited precise measurements. Here, we report a dual-emissive iridium(III) complex, IrNPh2, featuring "aggregation-induced emission" (AIE) properties used sensing. IrNPh2 exhibits dual emissions at 450 515 nm, with nm triplet-state emission demonstrating remarkable sensitivity due to long-lived excited state (12.12 μs) high quantum yield (68%). Stern–Volmer analysis reveals notable quenching constant (Ksv = 12.44%–1) an ultralow limit 0.0397%, emphasizing superior performance. The mechanism driven by electron transfer (ET), supported computational studies showing the lowest-unoccupied molecular orbital (LUMO) alignment πg* orbitals triplet oxygen, leading superoxide radical (O2•–) formation. Electron paramagnetic resonance (EPR) further confirm this pathway. Biological evaluations using three-dimensional (3D) U87-MG glioma spheroid model highlight ability detect hypoxic regions, significant fluorescence enhancement under hypoxia minimal cytotoxicity (>80% viability 100 μM). With low limits, biocompatibility, emerges as promising candidate sensing environmental biomedical especially tumor detection.

Language: Английский

Citations

0
A Supramolecular Fluorescent Substance Constructed by Cucurbit uril and Triphenylamine Derivate: AIE Properties and Application for The Detection of 4-Nitroaniline in Aqueous System DOI
Fang Fang,

Xiu‐Du Zhang,

Yonghong Ni

et al.

Talanta, Journal Year: 2025, Volume and Issue: 294, P. 128235 - 128235

Published: May 3, 2025

Language: Английский

Citations

0
Rotor proliferation promotes high-brightness AIE of iridium emitter accomplishing high-contrast luminous imaging of latent fingerprints to level 3 details DOI
Ling Di, Yingnan Jiang, Qi Song

et al.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2024, Volume and Issue: 325, P. 125145 - 125145

Published: Sept. 14, 2024

Language: Английский

Citations

1
Bis-cyclometalated Ir(III) complexes with carbazole/triphenylamine donor fragment for oxygen sensing DOI
Hong-Cui Yu, Bo Yu,

Yajiao Song

et al.

Transition Metal Chemistry, Journal Year: 2024, Volume and Issue: 49(4), P. 285 - 292

Published: April 28, 2024

Language: Английский

Citations

0