Disodium phosphate

The polymer PEG-b-PLGA (MW: 5k–10kDa) and suite of PTX-silicate prodrugs (see Table 1) were synthesized as previously reported.^{13 (link), 15 (link)} Paclitaxel was obtained from Phytogen Life Sciences. Water (H₂O, HPLC grade), tetrahydrofuran (THF, HPLC grade), and acetonitrile (ACN, HPLC grade) were purchased from Sigma-Aldrich and used as received. CDCl₃ was purchased from Cambridge Isotope Laboratories, Inc. Ethanol (anhydrous) was purchased from Decon Labs, Inc. Monosodium phosphate and disodium phosphate were purchased from Fisher Scientific. Phosphate buffered saline was prepared by dissolving 3.12 g of Monosodium phosphate, 20.74 g of disodium phosphate, and 9 g of sodium chloride in 1 L of water to achieve a pH = 7.4. The 10 mM acetate buffer was prepared by dissolving 0.21 g of glacial acetic acid, 0.52 g of anhydrous sodium acetate, and 9 g of sodium chloride in 1 L of water to achieve a pH of 5.0. Slide-A-Lyzer dialysis mini capsules (MWCO: 10 kDa, 0.5–1 mL) were purchased from Thermo Scientific.

Graphite flake and silver nitrate were purchased from Alfa Aesar. Sodium nitrate, potassium permanganate, hydrogen peroxide, multiwalled CNTs, TTF, citric acid, chloroplatinic acid, sodium borohydride, ammonium chloride, nickel chloride, copper acetate, iron(III) chloride, copper acetate, zinc nitrate, Nafion perfluorinated resin solution (5%), sodium thiosulfate pentahydrate, sodium bisulfite, polyvinyl chloride (PVC), polyvinyl butyral (PVB), F127, nonactin, bis(2-ethylhexyl) sebacate (DOS), 3,4-ethylenedioxythiophene (EDOT), poly(sodium 4-styrenesulfonate) (PSS), CS, PDMS, aniline, and platinum carbon black (Pt/C) (0.5%) were purchased from Sigma-Aldrich. Sulfuric acid, hydrochloric acid, ascorbic acid, methanol, ethanol, acetone, tetrahydrofuran, sodium chloride, disodium phosphate, urea, and dextrose (D-glucose) were purchased from Fisher Scientific. MDB was purchased from Combi- Blocks Inc. Lactate oxidase (106 U mg⁻¹) was purchase from Toyobo Co. The CNT film and Ni substrate (h-Ni) were purchased from NTL Inc. and MXBaoheng Products, respectively. Medical tapes were purchased from Adhesives Research. PIs (PI-2611 and PI-2610) were purchased from HD MicroSystems Inc. Silver conductive paint was purchased from Structure Probe, Inc. (SPI supplies).