Table 2.

Hydrogel formulations

First Network	Second Network	Morphology	Sensing Chemistry	Co-Solvents	Monomer:Solvent Ratios (v:v)
50:50 TRIS:DMA	pDMA homopolymer	IPN	10 mM PdBP in DCM	75 μL IPA; 50 μL DCM	1:1.04
60:40 TRIS:DMA	pDMA homopolymer	IPN	10 mM PdBP in DCM	62.5 μL IPA; 62.5 μL DCM	1:1.04
70:30 TRIS:DMA	pDMA homopolymer	IPN	10 mM PdBP in DCM	50 μL IPA; 75 μL DCM	1:1.04
80:20 TRIS:DMA	pDMA homopolymer	IPN	10 mM PdBP in DCM	37.5 μL IPA; 87.5 μL DCM	1:1.04
pHEMA homopolymer	N/A	Single network	10 mM PdBP in DMSO	90 μL ethylene glycol; 100 μL DI water	1:1