chemicals were used as received unless otherwise stated. Monomethoxy-poly(ethylene
glycol) (PEG) (1 kDa), monoamine-PEG (1 kDa), and monoazide-PEG (3
kDa) were purchased from JenKem Technology USA. Monomer trimethylene
carbonate was purchased from TCI Europe. BODIPY-FL carboxylic acid
was purchased from Lumiprobe. Immunoglobulin G, Human Fc Fragment
was purchased from Athenes Research Technology.
Dibenzocyclooctyne-amine-PEG4-N-hydroxysuccinimide (DBCO-PEG4-NHS) was purchased from Jena Bioscience. Amicon Ultra 0.5 mL 3 and
100 kDa spin filters were purchased from Sigma-Aldrich. CpG ODN 2006
and CpG ODN 2006-DBCO (5′ DBCO-PEG4 modification)
were purchased from Biomers.net GmbH. All other chemicals and reagents,
including endotoxin-free Dulbecco’s PBS (1×) (w/o Ca++ and Mg++) were supplied by Sigma-Aldrich.