Solid-state luminescence switching of platinum(Ⅱ) dithiooxamide complexes in the presence of hydrogen halide and amine gases

摘要

In the solid state, a non-luminescent platinum(Ⅱ) dithiooxamide species adsorbs gaseous HCl, yielding a tight ion pair species which exhibits photoluminescence; the process is quantitatively reversed on heating or by exposing the sample to ammonia vapors. Molecular systems capable of exhibiting on/off switching of luminescence in the presence of suitable substrates or under specific conditions are being extensively investigated since they are of interest in various applicative and fundamental research fields, such as sensors and molecular logic gates and machines.