Indium-based quantum dots trapped in solid-state matrices: a one-pot synthesis, thermoresponsive properties, and enhanced micropollutant removal

Ük, Nida; Aykut, Sümeyye; Jahangiri, Hadi; Nar, Ilgın; Ünlü, Caner

doi:10.1039/d4nj01219d

New J. Chem.

2024

DOI: 10.1039/d4nj01219d

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Indium-based quantum dots trapped in solid-state matrices: a one-pot synthesis, thermoresponsive properties, and enhanced micropollutant removal

Nida Ük,

Sümeyye Aykut,

Hadi Jahangiri

et al.

Abstract: Indium based quantum dots (QDs), such as copper indium disulfide and zinc copper indium sulfide, have been the center of research for decades due to their low toxicity and unique...

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Dual Luminescent Mn(II)‐Doped Cu‐In‐Zn‐S Quantum Dots as Temperature Sensors in Water

Bellatreccia,

Ziani,

Germinario

et al. 2024

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CuInS2 quantum dots have emerged in the last years as non‐toxic alternative to traditional Pb and Cd based quantum dots, especially for biological applications. In this work, the hydrothermal synthesis of alloyed Cu‐In‐Zn‐S quantum dots (CIZS) doped with manganese(II) is explored, with different metal ratios (Mn‐CIZSy). The doped quantum dots show the sensitized emission of Mn2+ (approximately ms lifetime), together with the emission of the CIZS structure (approximately µs lifetime). The relative contribution of Mn2+ emission is highly dependent on the composition of the CIZS hosting structure (In:Cu ratio). In addition to that, it is shown that Mn2+ sensitization requires a threshold energy, which suggests the involvement of an intermediate state in the sensitization mechanism. The long‐lived emission intensity decay of Mn2+ shows a stable and reversible temperature response in physiological conditions (25–45 °C, pH = 7.4). Mn‐CIZSy quantum dots are thus interesting candidates as biological luminescent temperature probe thanks to their easy synthesis, high colloidal stability, insensitivity to dioxygen quenching and quantitative time‐gated detection.

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Dual Luminescent Mn(II)‐Doped Cu‐In‐Zn‐S Quantum Dots as Temperature Sensors in Water

Bellatreccia,

Ziani,

Germinario

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

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Indium-based quantum dots trapped in solid-state matrices: a one-pot synthesis, thermoresponsive properties, and enhanced micropollutant removal

Abstract: Indium based quantum dots (QDs), such as copper indium disulfide and zinc copper indium sulfide, have been the center of research for decades due to their low toxicity and unique...

Cited by 1 publication

References 47 publications

Dual Luminescent Mn(II)‐Doped Cu‐In‐Zn‐S Quantum Dots as Temperature Sensors in Water

Dual Luminescent Mn(II)‐Doped Cu‐In‐Zn‐S Quantum Dots as Temperature Sensors in Water

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