11 amino 1 undecanethiol

Tetracycline (TC), N-hydroxysuccinimide (NHS), 11-amino-1-undecanethiol, phosphate buffer solution (PBS) tablets, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC), Ethanol, sodium dodecyl sulfate (SDS), Polyvinyl chloride (PVC), o-nitro phenyl octyl ether (NPOE), di-octyl phthalate (DOP), dibutyl phthalate (DBP), dibutyl sebacate (DBS), hydrochloric acid (HCl), diethyl ether, tetrahydrofuran (THF), di-octyl phthalate, bis(2-ethyl hexyl) sebacate were purchased from Sigma-Aldrich (France). The standard solutions and buffers were prepared with Millipore Milli-Q nanopure water (resistivity > 18 MW cm) which is produced by a Millipore Reagent Water System (France). Epoxy resin EPO TEK H70E 2LC was from Epoxy Technology, France. Cs[o-COSAN], was synthesized from 1,2-closo-C₂B₁₀H₁₂ from Katchem Spol.sr.o (Kralupy nad Vltavou, Czech Republic), as reported in the literature [54 (link)]. The Na[o-COSAN] was obtained by means of cationic exchange resin from Cs[o-COSAN] following the previously described procedure [31 (link)].

11-Mercapto-1-undecanoic acid (MUA), 6-mercapto-1-hexanol (MCH), 1-undecanethiol (UDT), 11-amino-1-undecanethiol (AUT), and 1-octadecanethiol (ODT) were purchased from Sigma Aldrich (St Louis, MO, USA). Ethanol and acetone were obtained from Junsei chemical Co., Ltd. (Tokyo, Japan). Polydimethylsiloxane (PDMS) was purchased from Dowhitech Silicone Co., Ltd. (Goyang-si, Korea). Phenyl terminated alkanethiol (PTA) was synthesized as described is Figure S2 (Supplementary Information). Thiolated benzene-specific peptides were prepared by phage-display library screening [21 (link)]. The peptides were purchased from KAAL (Seoul, Korea).

SAMs were prepared using a protocol modified from our previous study (15 (link)). Briefly, the Au surfaces (40 nm) were deposited on glass coverslips following a Ti layer (40 nm), using an ANELVAL-400EK electron beam evaporator (Canon Anelva Corp., Kanagawa, Japan). The silicon wafers coated with Au (Zhongding Ltd., Yangzhou, China) were washed with triple-distilled water in an ultrasonic bath for 10 min, and immersed in 1 Mm 1-undecanethiol (-CH₃; Sigma, St. Louis, MO, USA), 11-amino-1-undecanethiol (-NH₂; Sigma), 11-hydroxy-1-undecanethiol (-OH; Sigma), 12-mercaptododecanoic acid (-COOH; Sigma) for 12 h (16 (link)). Following the self-assembly process, the substrates were washed with triple-distilled water and dried with nitrogen.