Organic/inorganic Langmuir-Blodgett films based on known layered solids: characterization and reaction of cobalt octadecylphosphonate

• Published in: Materials research bulletin Vol. 34; no. 3; pp. 437 - 445
• Main Authors: Seip, Candace T, Talham, Daniel R
• Format: Journal Article Conference Proceeding
• Language: English
• Published: London Elsevier Ltd 01.02.1999; Amsterdam Elsevier Science
• Subjects: A. layered compounds; A. thin films; B. intercalation reactions; Chemistry; Exact sciences and technology; General and physical chemistry; Langmuir blodgett films; Surface physical chemistry; B. intercalation reactions; A. thin films; A. layered compounds; Multilayer; Transition metal Compounds; Preparation; Cobalt Compounds; Photoelectron spectrometry; Langmuir Blodgett layer; Organic phosphonate; X ray; Experimental study; X ray diffraction
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/S0025-5408(99)00027-6

Langmuir-Blodgett (LB) films of cobalt octadecylphosphonate were prepared and shown to form mixed organic/inorganic layered films of the formula Co(O 3PC 18H 37)·H 2O possessing two-dimensional continuous solid metal phosphonate layers. The films were characterized with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ellipsometry, and attenuated total reflectance Fourier transform infrared (FTIR) spectroscopy, and they were shown to be LB analogs of the known solid-state layered cobalt phosphonates. Reactivity seen in the solid-state cobalt phosphates was also demonstrated for the LB films. Like the solid-state analogs, the cobalt phosphonate LB films can be dehydrated and reacted to uptake ammonia from the vapor phase.