| Autor: |
Mini P; School of Chemistry, Monash University, Clayton, Victoria 3800, Australia. Kellie.Tuck@monash.edu., Walker SE; School of Chemistry, Monash University, Clayton, Victoria 3800, Australia. Kellie.Tuck@monash.edu., Grace MR; School of Chemistry, Monash University, Clayton, Victoria 3800, Australia. Kellie.Tuck@monash.edu., Dennison GH; CBRN Defence Branch, Sensors and Effectors Division, Defence Science and Technology Group, Fishermans Bend, VIC, 3207, Australia. genevieve.dennison@defence.gov.au.; Electro Optical Systems Branch, Sensors and Effectors Division, Defence Science and Technology Group, Edinburgh, SA, 5111, Australia., Tuck KL; School of Chemistry, Monash University, Clayton, Victoria 3800, Australia. Kellie.Tuck@monash.edu. |
| Abstrakt: |
Two novel, discrete lanthanide-macrocycle binary complexes for the detection of hydrogen sulfide are reported. The hydrogen sulfide sensing mechanism utilises the copper sequestration at a secondary binding site, with resulting bimetallic lanthanide(III)/copper(II) complexes (Ln = Eu 3+ and Tb 3+ ) exhibiting high selectivity, good sensitivity and excellent reversibility for aqueous hydrogen sulfide. The inclusion of the DO2A macrocycle and 4-(2-pyridyl)-1,2,3-triazole dipicolinic acid ligand, results in a complex with good solubility and stability. The europium(III) complex also displayed a low limit of detection (665 ppb) with a response time of 30 seconds with gaseous hydrogen sulfide. The improved water solubility and stability over a previous complex results in these sensors having the potential for use in environmental monitoring and biological studies for various functional settings. |
