Comparison of host-guest Langmuir-Blodgett multilayer formation by two different amphiphilic cyclodextrins

Journal Article · Wed Aug 07 00:00:00 EDT 1996 · Langmuir

DOI:https://doi.org/10.1021/la960144k· OSTI ID:374483

Parazak, D P; Khan, A R; D`Souza, V T; Stine, K J ^[1]

---

1. Univ. of Missouri, St. Louis, MO (United States)

We report here our results for Langmuir monolayers of the derivatives of cyclodextrin shown: hexakis(6-deoxy-6-dodecylamino)-{alpha}-cyclodextrin (1a), heptakis(6-deoxy-6-dodecylamino)-{beta}-cyclodextrin (1b), and heptakis(6-deoxy-6-dodecylthio)-{beta}-cyclodextrin (2b ), which was found to be partially substituted. Langmuir films of these derivatives were examined using {Pi}-A isotherm measurements and Brewster angle microscopy. Langmuir-Blodgett (LB) multilayer films of these derivatives were deposited from subphases containing p-nitrophenol to determine the extent of incorporation of the guest molecule in the LB film. The transfer ratios of the film exhibited a noteworthy evolution with the transfer pressure. The variation in the extent of guest molecule incorporation is discussed and compared with the binding behavior in solution of unmodified cyclodextrins. 29 refs., 4 figs.

• DOE Contract Number: FG02-92CH10499
• OSTI ID: 374483
• Journal Information: Langmuir, Vol. 12, Issue 16; Other Information: PBD: 7 Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
THIN FILMS
MICROSCOPY
CHEMICAL PREPARATION
DEXTRIN
POLYSACCHARIDES
MICELLAR SYSTEMS
SURFACE PROPERTIES
ISOTHERMS