Náttúrufræðingurinn

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Náttúrufræðingurinn - 1995, Page 14

Náttúrufræðingurinn - 1995, Page 14
aðra sp-kolefna), ekki ósvipað HC(JN sam- eindinni hér á undan, með allt að 300 atómum (Lagow o.fl. 1995). Knattkol skipa nú veglegan sess innan efnafræðinn- ar og ljóst er að ný lönd, eða jafnvel heimsálfa, hafa verið numin. Mörg stór- fyrirtæki rannsaka nú knattkol en enn sem komið er virðast hagnýt not af þeim ekki vera fyrirsjáanleg (Baum 1993). Þó verður að hafa í huga að aðeins hafa verið tekin fyrstu sporin inn í hin nýju lönd og líklegt er að þrautseigja og hugvit landkönnuða eigi eftir að skila miklum árangri. ■ HEIMILDIR Baum, R.M. 1993. Commercial uses of fuller- enes and derivatives slow to develop. Chem. Engineer. News. nov. 22, 8-18. Becker, L., J.L. Bada, R.E. Winans, J.E. Hunt, T.E. Bunch & B.M. French 1994. Fullerenes in the 1.85 billion-year-old Sudbury Impact Structure. Science 265, 642-645. Bethune, D.S., R.D. Johnson, J.R. Salem, M.S. de Vires & C.S. Yannoni 1993. Atoms in carbon cages: the structure and properties of endohedral fullerenes. Nature 366, 123-128. Birkett, P.R., P.B. Hitchcock, H.W. Kroto, R. Taylor & D.R.M. Walton 1992. Preparation and characterization of C,„Br and C,,1Br„. Nature 357, 479-481. Fagan, P.J., Calabrese & B. Malone 1991. A Multiply-Substituted buckminsterfullerene (C60) with an Octahedral array of platinum atoms. J. Am. Chem. Soc. 113, 9408-9409. Fagan, P.J., B. Chase, Calabrese, D.A. Dixon, R. Harlow, P.J. Krusic, N. Matsuzawa, F.N. Tebbe, D.L. Thorn & E. Wasserman 1992. Some well characterized chemical reactivit- ies of buckminsterfullerene (CM)). Carbon 30, 1213-1226. Friedman, S.H., E.L. DeCamp, R.P. Sijbesma, G. Srdanov, F. Wudl & G.L. Kenyon 1993. Inhibition of the HlV-1 Protease by Fullerene Derivatives: Model building Stud- ies and Experimental Verificaion. J. Am. Chem. Soc. 115, 6506-6509. Guo, T., C. Jin & R.E. Smalley 1991. Doping Bucky: Formation and Properties of Boron- Doped Buckminsterfullerene. J. Phys. Chem. 95, 4948-4950. Haddon, R.C., A.F. Herbard, M.J. Rosseinsky, D.W. Murphy, S.J. Duclos, K.B. Lyons, B. Miller, J.M. Rosamilia, R.M. Fleming, A.R. Kortan, S.H. Glarum, A.V. Makhija, A.J. Muller, R.H. Eick, S.M. Zahurak, R. Tycko, G. Dabbagh & F.A. Thiel 1991. Conducting films of C60 and C70 by alkali-metal doping. Nature 350, 320-322. Haddon, R.C. 1992. Electronic Structure, Con- ductivity and Superconductivity of Alkali Metal Doped C6Q. Acc. Chem. Res. 25, 127- 133. Haufler, R.E., J. Conceicao, L.P.F. Chibante, Y. Chai, N.E. Byrne, S. Flanagan, M.M. Hale, S.C. O'Brien, C. Pan, Z. Xiao, W.E. Billups, M.A. Ciufolini, R.H. Hauge, J.L. Margrave, L.J. Wilson, R.E. Curl & R.E. Smalley 1990. Efficient Production of C60 (Buckminsterfullerene), C6()H,6, and the Solvated Buckide Ion. J.Phys. Chem. 94, 8634-8636. Hawkins, J.M., A. Meyer, T.A. Lewis, S.D. Loren & F.J. Hollander 1991. Crystal Struc- ture of Osmylated C6Q: Confirmation of the Soccer Ball Framework. Science 252, 312- 313. Heath, J.R., S.C. O'Brien, Q. Zhang, Y. Liu, R.F. Curl, H.W. Kroto, F.K. Tittel & R.E. Smalley 1985. Lanthanum complexes of spheroidal carbon shells. J. Am. Chem. Soc. 107, 7779-7780. de Heer, W.A. & D. Ugarte 1993. Carbon on- ions produced by heat treatment of carbon soot and their relation to the 217.5 nm inter- stellar absorption feature. Chem. Phys. Lett. 207, 480-486. Herbard, A.F., M.J. Rosseinsky, R. C. Haddon, D.W. Murphy, S.H. Glarum, T.T.M. Palstra, A.P. Ramirez & A.R. Kortan 1991. Super- conductivity at 18 K in potassium-doped C,0. Nature 350, 600-601. 60 Heymann, D., L.P.F. Chibante, R.R. Brooks, W.S. Wolbach & R.E. Smalley 1994. Fullerenes in the Creataceous-Tertiary Boundary Layer. Science 265, 645-647. Holloway, J.H., E.G. Hope, R. Taylor, G.J. Lagley, A.G. Avent, T.J. Dennis, J.P. Hare, H. W. Kroto & D.R.M. Walton 1991. Fluori- nation of Buckminsterfullerene. J. Chem. Soc., Chem. Commun., 966-969. Iijima, S. 1991. Helical microtubules of graphitic carbon. Nature 354, 56-58. Kratschmer, W., L.D. Lamb, K. Fostiropoulos, & D.R. Hufmann 1990. Solid Ca new form of carbon. Nature (London) 347, 354- 358. Kriitschmer, W. 1994. Interstellar grains and new forms of carbon: The interaction of two 124
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