Skip to main content
. 2018 Jun 25;115(28):7272–7277. doi: 10.1073/pnas.1720488115

Fig. 4.

Fig. 4.

Base catalyzed reaction occurs in droplets generated from neutral bulk solution. (A) Schematic for plasmon-catalyzed 4-ATP dimerization enhanced under alkaline conditions. (B) Optical image and SERS map of a droplet containing 0.6 M PB solution + 4-ATP–based nanoprobes. (C) SERS map of droplet containing 4-ATP–based probes constructed by tracking the DMAB band at 1,432 cm−1. (D) SERS map of bulk solution constructed by tracking the DMAB band at 1,432 cm−1. (E) SERS spectra of 4-ATP in different samples at room or elevated temperature.