To synthesize the NPs, tetraethyl orthosilicate (TEOS), ethylene glycol, polyvinylpyrrolidone (PVP, Mw ≈ 40,000), silver nitrate (AgNO3, 99.99%), octylamine, and MPTS were purchased from Sigma-Aldrich (St. Louis, MO, USA) and used without any purification. Ethyl alcohol (EtOH) and aqueous ammonium hydroxide (NH4OH, 27%) were purchased from Daejung (Siheung, Korea). Designed cysteinyl-β-CD and EDA-β-CD were obtained from the Microbial Carbohydrate Resource Bank (MCRB) at Konkuk University, Korea [25 (link),28 (link)], and m-PEG-SH (M.W. 5000) was purchased from Sunbio (Anyang, Korea). Deionized (DI) water was used in all experiments.
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