Abstract
A new strategy was put forward to fabricate amorphous coordination polymer nanoparticles (CPNs) self-assembled by lanthanide ions (Ln3+) and ATP whose adenine subunit and phosphate group served as bidentate ligands for Ln3+. These ATP/Ln3+ CPNs showed weak luminescence but could be sensitized by introduction of external stimuli. Hence, they could be “artificial tongues” to respond to multifarious analytes (pyridine carboxylic acids or metal ions). Inspired the fact that both ATP/Tb3+ and ATP/Eu3+ CPNs presented ultrasensitive responses to 2, 6-pyridinedicarboxylic acid, a tunable chromaticity of emission from red to green was achieved by simply varying the doping ratio of Tb3+ and Eu3+ into ATP. Moreover, the ATP/Ln3+ CPNs exhibited surprisingly encapsulation properties for guest dye, indicating the feature of self-adaptive assembly. These features above provided the possibility of performing logic operations. By employing these CPNs as logic operators, the implementation of Boolean logic gates (INH and AND) and integrative logic operation (INH-INH) connecting the elementary logic operations has been successfully achieved.
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