After 2 hours at room temperature, IR showed complete conversion Electrical characterisation to carbamate (17 cmв€’1). Dinitrobenzyl alcohol (0.13 g, 0.65 mmol ) and dimethylaminopyridine (DMAP) (40 mg, 0.33 mmol ) were added. 3,5for at least two weeks to remove trapped water and to allow some annealing of the LB film. IR showed complete conversion to isocyanate (2259 cmв€’1). The samples were then desiccated at atmospheric pressure hours to complete the Curtius rearrangement to 6. The mixture was filtered and the solvent was removed by rotary this molecule means that it has only weak amphiphilic nature consequently there is unlikely to be a strong overturning force evaporation to give 0.25 g (0.65 mmol ) of solid acyl azide, which was heated at reflux in 25 ml of dry benzene for 24 acting on subsequent (alternate) layers. The short aliphatic tail on conversion to the acyl azide (21 cmв€’1). After stirring overnight, IR showed complete upright, with the hydrophilic dinitrophenyl acceptor groups closest to the silver base electrode. The resultant transferred monolayer therefore has the molecules oriented with the pyrene backbone treated with sodium azide (0.230 g, 3.57 mmol ) and 151 CH 3 CN-THF. Rotary evaporation gave an oil which was Z-type deposition. IR showed complete conversion to the acid chloride (1752 cmв€’1). Under these conditions, the LB transfer occurred on the up-stroke only, i.e. After 8 h of heating at reflux, stroke to allow for monolayer relaxation. Into a flask equipped with a reflux condenser and a CaSO 4 using a dipping speed of 0.1 mm sв€’1, and with a 20 second delay incorporated into the dipping routine between each drying tube were placed 0.27 g (0.76 mmol ) of 5 in 20 ml of dry benzene and 1 ml of SOCl 2. LB transfer was conducted at a surface pressure of 25 mN mв€’1, 3,5-Dinitrobenzyl 7-(1-oxohexylamino)pyren-2-ylcarbamate (2). and was observed to be colourless and stable over many hours. Calcd for C 23 H 21 NO 3 : C, 76.86 H, The Langmuir monolayer was spread from a solution of ~1 mg solute in 100 ml ARISTAR (Merck) grade chloroform, 5.89 N, 3.90. LangmuirBlodgett (LB) deposition onto the substrates was performed 2951, 2881, 1685, 1676, 1648, 1540, 1388 cmв€’1 1H-NMR (DMSO-d 6 ) d 10.5 (1H, s), 8.85 (2H, s), 8.60 (2H, s), 8.30 within one hour of removal from vacuum in order to minimize the sulfidization of the silver.

Acidification of the hot solution gave, after cooling, an 85% yield of 5: mp 340 вЊ (decomp.) IR ( KBr) 3304, 3050, was then thermally evaporated onto the silicon.

A planar base electrode consisting of 100 nm thick 99.99% pure silver dissolved. The mixture was heated on steam until all of the starting compound dimethyldichlorosilizane in 1,1,1-trichloroethane. Junction fabrication remains essentially the same as Geddes et al.8 Silicon (110) wafers, were cut into ~20 mmГ—20 mm squares, and rendered hydrophobic in a solution of 2% to NaOH (3.00 g, 75.0 mmol ) in 50 ml of water.

Chemlab electric molecular