Nozik, "Structural, optical, and electrical properties of self-assembled films of PbSe nanocrystals treated with 1,2-ethanedithiol
," ACS Nano, vol.
N,N-Di(isopropyl)carbodiimide (DIPC), anisole, and 1,2-ethanedithiol
(EDT) were from "Merck" (Darmstadt, Germany).
We have prepared these materials in our laboratories by microwave irradiation promoted decomposition of single source precursors (SSPs) in the presence of hexanethiol and 1,2-ethanedithiol
as a capping ligands.
After the chain elongation was completed, the protected peptide resins (1.06-1.28 g) were cleaved with a mixture containing 10 mL of trifluoroacetic acid (TFA), 750 mg of phenol, 500 [micro]L of thioanisole, 500 [micro]L of [H.sub.2]O, and 250 [micro]L of 1,2-ethanedithiol
for 3.5-13 h at room temperature.
Though 2-mercaptoethanol and thioglycolic acid reacted homogeneously from beginning to end, gelation was recognized upon reaction of allylated and vinylbenzylated PMIA with 1,2-ethanedithiol. This may be due to the inter- or intra-crosslinking reaction of unsaturated PMIA molecules by this reagent.
On the other hand, the weight loss of PMIA derivatives on heating was reduced by the reaction of unsaturated groups introduced in PMIA with 1,2-ethanedithiol because of the formation of a crosslinking structure as shown in Fig.
More recently, the blending OA-capped PbS NCs with a low bandgap polymer, poly(2,6-(N-(1-octylnonyl)dithieno[3,2-b:20, 30-d]pyrrole)-alt-4,7-(2,1,3-benzothiadiazole)) (PDTPBT) was directly exchanged with a short length cross-linker molecule, 1,2-ethanedithiol
, Seo et al.
P16 peptide (N[H.sub.2]-Cys-Val-Asn-Thr-Pro-Glu-His-Val-Val-Pro-Tyr-Gly-Leu-Gly -Ser-Pro-Arg-Ser-COOH) was produced in our laboratory by solid-phase synthesis in an Applied Biosystems (Roissy CD6, France) 431-A synthesizer with 9-fluorenylmethyloxycarbonyl-tert-butyl chemistry on a p-hydroxymethylphenoxymethyl-polystyrene resin, and was cleaved in the presence of phenol, 1,2-ethanedithiol
, trifluoroacetic acid, and thioanisole.
Equal amounts of SSPs 1 and 2, [([Ph.sub.3]P).sub.2]Cu[([mu]-SEt).sub.2]In[(SEt).sub.2] (SSP 1, 6.00g, 6.33mmol) and [([Ph.sub.3]P).sub.2]Cu[([mu]-SEt).sub.2]Ga[(SEt).sub.2] (SSP 2, 5.71 g, 6.33 mmol), are dissolved in dried benzene (60 mL) in the presence of one equiv of 1,2-ethanedithiol
(1.06 mL, 12.66 mmol).