N hydroxysuccinimide

N-Cetyltrimethylammonium bromide (CTAB), tetraethyl orthosilicate (TEOS), sodium hydroxide (NaOH), 3-aminopropyltriethoxysilane (APTES), pyruvic acid (PA), N-hydroxysuccinimide (NHS), 1-ethyl-3-(3-(dimethylamino) propyl) carbodiimide hydrochloride (EDC), (2-thienylmethyl)hydrazine hydrochloride, (5,6-dimethylthieno[2,3-d]pyrimidin-4-yl)hydrazine, trifluoroacetic acid (TFA), triethylamine (TEA), ethanol, 2-propanol from Carl Roth (Carl Roth GmbH & Co. KG, Karlsruhe, Germany), dichloro(p-cymene)ruthenium(II) dimer, phosphate buffered saline (PBS), toluene and crystal violet (CV) were purchased from Sigma-Aldrich (Merck KGaA, Darmstadt, Germany). Dulbecco’s Modified Eagle Medium (DMEM) was purchased from Biowest (Riverside, CA, USA). For in vitro experiments nutrition medium RPMI 1640, FCS (fetal calb serum), penicillin/streptomycin and phosphate buffer saline (PBS) were obtained from Capricorn scientific GmbH (Ebsdorfergrund, Germany), glutamine and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) from GE healthcare (Chicago, IL, USA) and Biomol GmbH (Hamburg, Germany), respectively.

Iron(II) chloride tetrahydrate (FeCl₂⋅4H₂O), hydroxylammonium chloride, bovine serum albumin (BSA), and Eppendorf ultrafiltration tubes with a molecular weight cutoff (MWCO) of 3 kDa were purchased from Merck (Darmstadt, Germany). Iron(III) chloride hexahydrate (FeCl₃⋅6H₂O), dialysis tubes (Spectrapor 6, MWCO 8 kDa), ammonium chloride, formic acid, hydrochloric acid 25 %, ethylcarbodiimide hydrochloride (EDC), N-hydroxysuccinimide (NHS), sodium thiosulfate, silver nitrate, sodium carbonate, and ammonia solution 25 % were supplied by Roth (Karlsruhe, Germany). Propidium iodide (PI), sodium citrate, triton X-100, ninhydrin, MES, HEPES, and poly(acrylic acid-co-maleic acid) solution (Mw = 3000 Da) were purchased from Sigma-Aldrich (St Louis, MO, USA). Ringer’s solution was bought from Baxter Healthcare (Zurich, Switzerland). Annexin V-FITC (AxV), Hoechst 33342 (Hoe), and DiIC1(5) (hexamethylindodicarbocyanine iodide dye [DiI]) were purchased from Thermo Fisher Scientific (Waltham, MA, USA).