Recent advances of cyclometalated Ir(III) complexes for optical oxygen sensing

Yu, Hongcui; Yu, Bo; Song, Yuqing; Hai, Pham Dang

doi:10.1016/j.ica.2023.121435

Cited by 6 publications

(2 citation statements)

References 112 publications

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“…The demand and supplement of oxygen is thought to be closely linked to a variety of serious diseases, such as cancers, neurological diseases, arteriosclerosis, cerebral infarction, ischemic heart disease, chronic kidney disease, and diabetic retinopathy. The monitoring of oxygen concentration in the body can effectively diagnose and trace the metastasis of pathological tissues as well as more accurate personality therapy [ 78 , 79 ].…”

Section: General Strategies To Design Nir Iridium(iii) Complexesmentioning

confidence: 99%

Recent Advances in Organometallic NIR Iridium(III) Complexes for Detection and Therapy

Jing,

Wu,

Niu

et al. 2024

Molecules

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Iridium(III) complexes are emerging as a promising tool in the area of detection and therapy due to their prominent photophysical properties, including higher photostability, tunable phosphorescence emission, long-lasting phosphorescence, and high quantum yields. In recent years, much effort has been devoted to develop novel near-infrared (NIR) iridium(III) complexes to improve signal-to-noise ratio and enhance tissue penetration. In this review, we summarize different classes of organometallic NIR iridium(III) complexes for detection and therapy, including cyclometalated ligand-enabled NIR iridium(III) complexes and NIR-dye-conjugated iridium(III) complexes. Moreover, the prospects and challenges for organometallic NIR iridium(III) complexes for targeted detection and therapy are discussed.

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Section: General Strategies To Design Nir Iridium(iii) Complexesmentioning

confidence: 99%

Recent Advances in Organometallic NIR Iridium(III) Complexes for Detection and Therapy

Jing,

Wu,

Niu

et al. 2024

Molecules

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“…The sensor's colour change indicates oxygen concentration, affecting the absorption of the TCL fibre's evanescent field. Most optical oxygen sensors use dynamic luminescence quenching [35] and optical fibres to transmit fluorescence. The proposed sensor uses NIR wavelengths and a chromogenic approach for oxygen detection in low-interference environments.…”

Section: Introductionmentioning

confidence: 99%

Chromogenic Approach for Oxygen Sensing Using Tapered Coreless Optical Fibre Coated with Methylene Blue

Kumar,

Wight

2024

Metrology

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In this paper, a Methylene Blue (MB)-coated tapered coreless (TCL) optical fibre sensor is proposed and experimentally investigated for oxygen sensing in the near-infrared (NIR) wavelength range of 993.5 nm. The effect of TCL diameter and MB sol–gel coating thickness on the sensitivity of the sensor was also investigated. A maximum sensitivity of 0.19 dB/O2% in the oxygen concentration range of 0–37.5% was achieved for a TCL fibre sensor with a 2 µm taper waist diameter and a 0.86 µm MB sol–gel coating thickness, with a response time of 4 min. The sensor provides reproducible results even after 7 days and is shown to be highly selective to oxygen compared to argon and ethanol at the same concentration.

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Iridium(III)‐Incorporating Self‐Healing Polysiloxanes as Materials for Light‐Emitting Oxygen Sensors

Parshina,

Deriabin,

Kolesnikov

et al. 2024

Macromol. Rapid Commun.

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Polymer‐metal complexes (PMCs) based on poly(2,2′‐bipyridine‐4,4′‐dicarboxamide‐co‐polydimethylsiloxanes) with cyclometalated di(2‐phenylpyridinato‐C2,N')iridium(III) fragments and cross‐linked by Zn2+ (Zn[Ir]‐BipyPDMSs) or Ir3+ (Ir[Ir]‐BipyPDMSs) represent flexible, stretchable, phosphorescent, and self‐healing molecular oxygen sensors. PMCs provide strong phosphorescence at λem = 595–605 nm. Zn[Ir]‐BipyPDMS with PDMS chain length of Mn = 5000 has the highest quantum yield of 9.3% and is a molecular oxygen sensor at different O2 concentrations (0–100 vol%) compared to Ir[Ir]‐BipyPDMSs. A Stern−Volmer constant is determined for Zn[Ir]‐BipyPDMS as KSV = 0.014%−1, which is similar to the reported oxygen‐sensitive iridium(III) complexes. All synthesized PMCs exhibit high elongation at break (up to 1100%) and self‐healing efficiency (up to 99%).

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Recent advances of cyclometalated Ir(III) complexes for optical oxygen sensing

Cited by 6 publications

References 112 publications

Recent Advances in Organometallic NIR Iridium(III) Complexes for Detection and Therapy

Recent Advances in Organometallic NIR Iridium(III) Complexes for Detection and Therapy

Chromogenic Approach for Oxygen Sensing Using Tapered Coreless Optical Fibre Coated with Methylene Blue

Iridium(III)‐Incorporating Self‐Healing Polysiloxanes as Materials for Light‐Emitting Oxygen Sensors

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