ROUTINE ABSORBENCY SPECTROSCOPY AT THE AIR-WATER-INTERFACE

被引：1

作者：

MOORE, JL ^{[1
]}

DEBRY, BA ^{[1
]}

HUGHES, KD ^{[1
]}

机构：

[1] GEORGIA INST TECHNOL,DEPT CHEM & BIOCHEM,ATLANTA,GA 30332

来源：

APPLIED SPECTROSCOPY | 1995年 / 49卷 / 03期

关键词：

MONOLAYER; ABSORPTION; CARBOCYANINE;

D O I：

10.1366/0003702953963517

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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.

引用

页码：386 / 391

页数：6

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