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## Synthesis of Polymer 1 

A 2-L flask was charged with 8.4 g of 1-methylcyclopen› tyl methacrylate, 3.6 g of 4-hydroxyphenyl methacrylate, 4.5 g of 3-oxo-2,7-dioxatricyclo[4.2.l.0 4 ’ $^{8}$]nonan-9-yl meth- acrylate, 8.1 g of PAG Monomer 1, and 40 g of THF as solvent. The reactor was cooled at - 70° C. in nitrogen atmosphere, after which vacuum pumping and nitrogen blow were repeated three times. The reactor was warmed up to room temperature, whereupon 1.2 g of AIBN as polym- erization initiator was added. The reactor was heated at 60° C., whereupon reaction ran for 15 hours. The reaction solution was poured into 1 L of isopropyl alcohol for precipitation. The resulting white solid was collected by filtration and vacuum dried at 60° C., yielding Polymer 1 as white solid. The polymer was analyzed for composition by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC, with the results shown below. 

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## Synthesis Example 1 

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## Synthesis of Polymer 2 

Polymer 2 was synthesized as white solid by the same procedure as in Synthesis Example 1 aside from using 10.3 g of PAG Monomer 2 instead of PAG Monomer 1. The yolymer was analyzed for composition by $^{13}$C- and H-NMR and for Mw and Mw/Mn by GPC. Polymer 2 

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## Synthesis Example 2 

