1. Characteristics for Telechelic Oligomers and the Counterion-Free IAPs.

component	sample ID	M n (kg/mol)	D̵ = M w/M n	T m (°C)	T d (°C)
α,ω-diol PEG	PEG	2.8	1.03*, 1.01**	60.0	303
α,ω-imidazole PEG	A2	2.9	1.01**	47.9	335
α,ω-ethyl sulfonate PEG	B2	3.1	1.01**	45.8	278
ionic PEG blend	A2/B2 (blend)			47.4	471
IL doped PEG diol	IL/PEG	2.8	1.03*, 1.01**	50.4/55.9

^aDetermined via ¹H NMR spectroscopy.

^bDetermined via SEC-MALS* or MALDI-TOF** mass spectrometry.

^cDetermined via DSC.

^dDetermined via TGA.