Inorganic analogs of Langmuir-Blodgett films: adsorption of ordered zirconium 1,10-decanebisphosphonate multilayers on silicon surfaces

New Phosphonic Acid Functionalized, Regioregular Polythiophenes

“…Further fractionation/purification included a Soxhlet extraction with hexanes, followed by an extraction of the purified polymer 7 into chloroform. 1 H NMR characterization showed a highly regioregular backbone as indicated by the single aromatic peak corresponding to head-to-tailhead-to-tail regiochemistry. GPC analysis of the chloroform fraction gave an M n of 21 500 g/mol with a PDI of 1.46.…”

“…After concentration, 4 was obtained as a pale yellow oil (13.1 g, 49% yield). 1 2-Bromo-3-dodecyl-3′-bromohexyl-5,2′-bithiophene.Compound 4 (12.83 g, 30.7 mmol) was dissolved in THF (130 mL), and the solution was cooled to 0°C. Recrystallized NBS (6.02 g, 33.8 mmol) is added portionwise.…”

“…The title compound was recovered as a pale yellow oil (11.93 g, 67% yield). 1 2-Bromo-3-dodecyl-3′-(diethylhexylphosphonate)-5,2′-bithiophene (5). 2-Bromo-3-dodecyl-3′-bromohexyl-5,2′-bithiophene (6.42 g, 12.9 mmol) and triethyl phosphite (8.88 mL, 51.7 mmol) were placed in a round-bottom flask with an attached distillation head for removal of byproducts.…”

Supramolecular Architecture

“…Ordered thin films of layered metal phosphonates -inorganic analogs to Langmuir-Blodgett films -have been built using surface-attached phosphonates that were reacted with zirconium salts to replicate zirconium phosphate crystallization on a surface (Τ. E. Mallouk), 18 and to afford multilayers with electron donating (e.g.,tetrathienyldiphosphonic acid) and accepting inter/layer functions (Η. E. Katz). A related approach leads to mixed valence charge transfer compounds such as Ru(II)-pyrazine-Ru(III) assembled in multilayers (Β. I. Swanson).…”

Zirconium phosphonate/1,4,5,8-naphthalenediimides self-assembled films

“…Here it is reported the preparation and characterization of self-assembled thin films of N,N'-di(2-phosphonoethyl)-1,4,5,8-naphthalenediimide (DPN) /zirconium phosphonate (Lee et al 1988a, Lee et al 1988b.…”