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Wearable biosensors are critical for enabling real-time and continuous health monitoring and disease management.

Correction for 'Solution-processed wrinkled electrodes enable the development of stretchable electrochemical biosensors' by Yuting Chan et al., Analyst, 2019, 144, 172-179. The authors regret that an incorrect unit was stated in the abstract and conclusion of the original article. The sensitivity was given as 750-810 μA M −1 cm −2 . The correct value should be 750-810 μA mM −1 cm −2 .

The synthesis and properties of micron-sized particles by precipitation polymerization of maleic anhydride (MAn), styrene (Sty), 4-methylstyrene (4MS), and divinylbenzene (DVB-55) in methylethylketone (MEK)/heptane cosolvent mixtures are described. Particles were narrowly dispersed with diameters varying as a function of reaction solvent, cross-linker type and loading, and 4MS/Sty ratios. Diameters ranged from 1 to 14 μm when swollen in good organic solvents, with the largest sizes observed at low cross-linker loadings and for polymerization solvents containing ≥70 vol % MEK. At constant cross-linker loading and solvency, increasing the 4MS/Sty ratio from 0.1 to 1 more than doubled the particle diameters, illustrating the impact of comonomer composition on particle nucleation. Switching entirely from 4MS to Sty shifted solvency requirements for microgel formation by 10 vol % of the good solvent, MEK. Similarly, replacing DVB-55 with a diacrylate cross-linker restricted microgel formation to lower solvency regimes. Hydrolysis of anhydride groups gave microgels with pH-dependent swelling and volume swelling ratios of up to 40 depending on the degree of cross-linking.

No abstract