Temporal Control of Fluorescent EuW10 Aggregates for Autonomous DNA Capture and Information Encryption
Graphical We demonstrate the temporal programming of the assembly and disassembly of EuW 10 nanospheres using a pH clock reaction of acid/urease hydrolysis. The pH-responsive C 12 DMAO endow EuW 10 nanospheres with dynamical properties, in which fluorescence changes are coded in this system. These fluorescent nanospheres provide new application in time-programmed information encryption. Self-assembly exploits noncovalent interaction to offer an effective method for the fabrication of materials. For Na 9 [EuW 10 O 36 ] ⋅ 32H 2 O (EuW 10 ), the negative charges and abundant oxygen atoms on its surface provide a handle for static self-assembly. New properties are envisioned for EuW 10 aggregates which are able to display such kinetics and time-programming characteristics, in order to satisfy more complex and intelligent application scenarios, such as DNA binding and information encryption. In this work, EuW 10 coupling with stimuli-responsive dodecyl dimethylamine oxide (C 12 DMAO) can generate versatile aggregates with pH-responsive properties. We demonstrated the temporal programming of the assembly and disassembly of EuW 10 nanospheres using a pH clock reaction of acid/urease hydrolysis. The pH clock reaction endows EuW 10 assemblies with dynamical properties, in which the charges and fluorescence changes are coded in this system. These fluorescent assemblies provide new application in time-programmed DNA capture and information encryption.
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