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

CuInS 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 Mn (approximately ms lifetime), together with the emission of the CIZS structure (approximately µs lifetime).

Copper indium sulfide quantum dots enabling quantitative visible light photoisomerisation of ()-azobenzene chromophores.

Azobenzene derivatives have long been studied for their photochromic behaviour. One of the greatest challenges in this field is the quantitative () to () photoconversion triggered by visible light irradiation. In this work, the synthesis and characterization of CuInS quantum dots (CIS-QDs) appended with azobenzene units are reported: quantitative () → () isomerisation is obtained by visible light (, = 533 nm).