Dextran dex

Dextran (Dex; Mw −70 kDa) was purchased from Macklin Co. Ltd. (Shanghai, China). Sodium hyaluronic acid (HA; Mw = 200 kDa) was obtained from Shandong Freda Biochem Co., Ltd. (Linyi, China). Chitosan quaternary ammonium salt (HACC, 90% degree of substitution) was obtained from Guangdong Wengjiang Chemical Reagent Co. Ltd. (Shaoguan, China). Hyaluronidase from purified bovine testes, silver nitrate, adipic dihydrazide (ADH) and hydroxy-benzotriazole (HOBt) were purchased from Aladdin Biochemical Technology Co. Ltd. (Shanghai, China). 1-ethyl-3-[3-(dimethylamino) propyl] carbodiimide (EDC) and sodium periodate were purchased from Guangzhou Chemical Reagent Factory. CCK-8 was purchased from Shanghai Beyotime Biotechnology Co. Ltd. (Shanghai, China) E. coli (ATCC8739), S. aureus (ATCC14458) and P. aeruginosa (CMCCB10104) were obtained from the Department of Biomedical Engineering of Jinan University and were maintained on solid agar medium at 4 °C. All other reagents were analytical grade and used without further processing.

Poly(ethylene glycol) (PEG, Mw ~8000), Poly(vinyl alcohol) (PVA, Mw: 89,000–98,000, 99% hydrolyzed), Poly(2-ethyl-2-oxazoline) (PEtOx, Mw~50, 000), sodium citrate, Poly(ethylene glycol) diacrylate (PEGDA, Mn~575), sodium alginate, 2-Hydroxy-4′-(2-hydroxyethoxy)−2-methylpropiophenone (Irgacure 2959), N,N′-methylenebisacrylamide (MBAA), were purchased from Sigma-Aldrich. Dextran (DEX, Mw ~10,000, 40,000, and 500,000) and Nile red were purchased from Macklin. Acrylamide and lithium phenyl-2,4,6 trimethylbenzoylphosphinate (LAP) were purchased from TCI. Rhodamine 6 G, Fluorescein isothiocyanate (FITC) labeled Poly-l-lysine (FITC-PLL, Mw ~30,000–70,000), and Fluorescein isothiocyanate–dextran (FITC-dextran, Mw ~40, 000) were purchased from Sigma-Aldrich. Rhodamine-labeled PEG (Rh-PEG, Mw ~40,000) was purchased from Aladdin. Nucleic acid sequences of Cy5-DNA were synthesized by Integrated DNA Technology (IDT). Calcein was purchased from J&K scientific. Millipore Milli-Q water (18.2 MΩ, pH = 7) was used in all experiments. All materials were used as received without further purification.