**2. Results**

#### *2.1. Structural Verification of AMsils*

The AMsil structures were verified by 1H and 13C NMR (Tables 1 and 2). In brief, both 1H and 13C NMR spectra of AMsils confirmed the successful quaternization of 2-(dimethylamino)ethyl methacrylate (DMAEMA) precursor. By performing the syntheses in chloroform, methoxy groups of (3-iodopropyl)trimethoxy silane (IPTMS) and (11-bromoundecyl)trimethoxy silane (BrUDTMS) were protected from hydrolysis to which they are prone in aqueous environment.



Atom numbering is illustrated in Figure 1.


**Table 2.** Assignments of 13C and 1H NMR chemical shifts of AMsil2.

Atom numbering is illustrated in Figure 1.

#### *2.2. Biocompatibility Testing*
