Variations in the structure and reactivity of thioester functionalized self-assembled monolayers and their use for controlled surface modification

• Inbal Aped,
• Yacov Mazuz and
• Chaim N. Sukenik

Beilstein J. Nanotechnol. 2012, 3, 213–220, doi:10.3762/bjnano.3.24

• obtained from Virginia Semiconductor (n-type; undoped, <100>, >1000 Ω·cm). Quartz substrates were obtained from Quarzschmelze Ilmenau. Analytical Methods Unless otherwise indicated, NMR spectra were obtained on a Bruker DPX 300 spectrometer (1H NMR at 300 MHz; 13C NMR at 75 MHz). Some were performed on a

• Bruker DPX 200 spectrometer (1H NMR at 200 MHz; 13C NMR at 50 MHz). The spectra are reported in ppm units (δ) and are referenced to TMS at 0 ppm for 1H NMR and to CDCl3 at 77.160 ppm for 13C NMR. UV spectra (200–800 nm) were measured on a Cary Model 100 spectrometer (in double-beam transmission mode

• (50 mL) and brine (50 mL). The hexane was dried over MgSO4 and filtered, and the solvent was removed on a rotovap. The crude ω-undecenyl thiol was purified by flash chromatography (hexane): Yield 6.02 g (82%); 1H NMR δ 1.20–1.47 (m, 13H), 1.61 (m, 2H), 2.04 (m, 2H), 2.52 (q, J = 7.5 Hz, 2H), 4.93 (m

Direct monitoring of opto-mechanical switching of self-assembled monolayer films containing the azobenzene group

• Einat Tirosh,
• Enrico Benassi,
• Silvio Pipolo,
• Marcel Mayor,
• Michal Valášek,
• Veronica Frydman,
• Stefano Corni and
• Sidney R. Cohen

Beilstein J. Nanotechnol. 2011, 2, 834–844, doi:10.3762/bjnano.2.93

• and the mixture was sealed and stirred at room temperature for 4 h. The solvents were then evaporated under reduced pressure affording the thiol 2, thio-2-DA, which was used without further purification; 1H NMR (CDCl3) δ 3.5 (s, –SH), 7.4 (d, 3H), 7.5 (t, 2H), 7.6 (d, 2H), 7.7–7.8 (m, 6H), 8.0 (m, 4H

Novel acridone-modified MCM-41 type silica: Synthesis, characterization and fluorescence tuning

• Maximilian Hemgesberg,
• Gunder Dörr,
• Yvonne Schmitt,
• Andreas Seifert,
• Zhou Zhou,
• Robin Klupp Taylor,
• Sarah Bay,
• Stefan Ernst,
• Markus Gerhards,
• Thomas J. J. Müller and
• Werner R. Thiel

Beilstein J. Nanotechnol. 2011, 2, 284–292, doi:10.3762/bjnano.2.33

• orange oil (16.9 mmol, 6.77 g, 56%) showing a strong blue–green fluorescence under UV light. 1H NMR (400 MHz, CDCl3) δ 8.61 (d, 3JHH = 7.9 Hz, 2H), 7.76 (t, 3JHH = 7.8 Hz, 2H), 7.59 (d, 3JHH = 8.7 Hz, 2H), 7.32 (t, 3JHH = 7.5 Hz, 2H), 4.51–4.34 (m, 2H), 3.67 (s, 9H), 2.22–2.01 (m, 2H), 0.89 (t, 3JHH