Table 1. Sequences of Nucleotides Used in this Work.

symbol	sequence (5′ → 3′)	functional group
ATP aptamer	CCTGGGGGAGTATTGCGGAGGAAGG
ATP aptamer capture	ATACTCCCCCAGG-PMMA	amino (3′)
ATP aptamer reporter	AuNP-CCTTCCTCCGCA	amino (5′)
AMP aptamer	AAAGCGGGCGGTTGTATAGCGGAA
AMP aptamer capture	ACCGCCCGCTTT-PMMA	amino (3′)
AMP aptamer reporter	AuNP-TTCCGCTATACA	amino (5′)
DA aptamer	GTCTCTGTGTGCGCCAGAGAACACTGGGGCAGATATGGGCCAGCACAGAATGAGGCCC
DA aptamer capture	GGCGCACACAGAGAC-PMMA	amino (3′)
DA aptamer reporter	AuNP-GGGCCTCATTCTGTG	amino (5′)