Abstract

A Langmuir-Blodgett instrument has been assembled that is capable of providing side-by-side comparisons of two separate monolayers in a true double-beam absorption geometry with no moving parts. Absorbance spectra of two different films are monitored at the air/water interface, with the use of fiber optics in conjunction with a charge-coupled-device detector and a single-stage spectrograph. The utility of this instrument is demonstrated by simultaneous measurement of monomer, dimer, and aggregate components in a single-component carbocyanine dye monolayer and a mixed carbocyanine dye/phospholipid monolayer, as the isotherm of each of these films is generated. A linear relationship between number density and the carbocyanine monomer/dimer ratio is observed.

Oscillations of absorbing particles at the water-air interface induced by laser tweezers

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Opt. Express 25(3) 2481-2488 (2017)

Supramolecular chirality at the air/water interface [Invited]

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Reversibility of the supramolecular chirality of bridged binaphtol derivatives at the air-water interface

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Aggregation-induced second-harmonic generation

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J. Opt. Soc. Am. B 15(1) 484-488 (1998)

Influence of the air–water interface on hydrosol lidar operation

Grigorii P. Kokhanenko, Margarita M. Krekova, Ioganes E. Penner, and Vitalii S. Shamanaev
Appl. Opt. 44(17) 3510-3519 (2005)