Superabsorbent polymers comprising a lipophilic, halogen-free, and cost-effective aluminate ("altebate") anion have been synthesized. The polyelectrolytes are based on octadecyl acrylate monomers, 0.8-1 mol % ethylene dimethacrylate cross-linker, and 5 mol % N-3-acroyloxypropyl trialkylammonium altebate. At 30 °C, swelling degrees of 70 (chlorobenzene), 102 (CHCl3), 130 (THF), 163 (ClCH2CH2Cl), 171 (dichlorobenzene), and 208 (CH2Cl2) have been determined. The polyelectrolyte absorbs reversibly diesel fuel with a swelling degree of 34, even in the presence of water. Swelling times and critical swelling temperatures have also been determined. The challenges for the development of oil absorbents are discussed.

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Gas-phase reactions of neutral molecules delivered by laser desorption with ions introduced via an electrospray interface have been observed. To maximize the production of neutrals while keeping laser ionization products negligible, the laser fluence has been adjusted only slightly above the ionization threshold fluence. The reactions have been performed in the entrance to an ion funnel operated at 3-4 mbar. Both the laser desorption assembly and the electrospray interface belong to an electrospray ionization to matrix-assisted laser desorption/ionization switchable combination ion source attached to a Fourier transform ion cyclotron resonance mass spectrometer. The reaction products of molecular species of 1-aza[6]-helicene, 1,8-dihydroxy-9-anthrone (dithranol) and 2-mercaptobenzothiazole with protonating reagent ions and silver cations from electrospray were detected. The products were identified by their accurate mass, proton/deuterium isotopic exchange and by resolving the corresponding peaks of isotopolog ions.