초록 |
Rhodamine chemosensors was introduced to a polymer through triazole click reaction and Diels Alder reaction of furan group. The formation of heterocycles from the coupling reaction provides a new binding site, which cooperates with proximal ligands for metal complexation. The contribution of heterocycles groups improves sensing property of rhodamine sensors. The spiro lactam of several rhodamine-hydrazides disclosed on polymer coupling reaction to turn on before metal exposure. We designed several stable rhodamine chemosensors and successfully coupled to ionic polymers in mild condition, in which furan exchange reaction occurred with maleimide employed in polymer chain. The sensing performance of the prepared polymers is discussed in micro to nano molar concentration of metal ions. |