Microcomputer-controlled Langmuir–Blodgett dipping trough

Abstract

An Apple II interfaced to a Langmuir–Blodgett trough and a microbalance maintains interactive control on film deposition.

Effect of Stearic Acid on Molecular Orientation in Metal-Free 2,9,16,23-Tetra-tert-butyltetrabenzotriazaporphine Langmuir-Blodgett Films

“…The subphase was water purified by double distillation over KMnO* followed by passage through a Barnstead organic removal cartridge and two Bamstead mixed-resin ultrapure cartridges. The stearic acid was recrystallized from absolute ethanol and dried in a vacuum oven at 50 °C for 24 h. The NaCIO* electrolyte was used as supplied.…”

“…The LB trough was made from Teflon, built at York University, according to a described design. 50 The system was controlled with an Apple 11+ microcomputer, using a local program, as described in our previous paper.44 The concentration of the toluene solution of TBTAPC15, was usually 8 X 1CH M. In general, after spreading the solution, 5-10 min were allowed for the toluene to evaporate, the monolayer was then compressed at a speed of ca. 1.5 Á2/ (molecule min), and a surface pressure ( ) versus area per molecule (A) isotherm recorded.…”

Langmuir-Blodgett Films of Bis(stearyl pyridine-4-carboxylate)(phthalocyaninato)iron(II)

“…The LB trough was made from Teflon, built at York University, according to a described design. 19 The system was automated with an Apple 11+ microcomputer, using a local program, as described in our previous paper.18 The toluene solution was usually of 8 x 10~4 M and, generally, 5-10 min is allowed for the toluene to evaporate after spreading the solution. The monolayer is then compressed at a speed of ca.…”