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Reagents and conditions: i) CuBr, (E)-N-(pyridine-2-ylmethylene)propan-1-amine, 70°C toluene; ii) Coumarin 343 2’-bromoethyl ester, potassium iodide, acetone, 45 to 55°C. iii) THF, methyl iodide. Initial (polymer tertiary amino groups): (methyl iodide): 1:0.25, 1:0.5, 1:0.75, 1:1 mol:mol, iv) THF, 1,3-propane sultone. Initial [polymer tertiary amino groups]0: [1,3-propane sultone]0: 1:0.25, 1:0.5, 1:0.75, 1:1 mol:mol.
