固体炭素材料の分類と各々の構造的 ... - NITech

1 - - C60, C70, lonsdaleite 1985 1991 2004 1996 2010 C60 A) Ih B) C)IPR D) nm, nm) IR, Raman C60 = 2Ag + 3T1g + 4T2g + 6Gg + 8Hg + Au + 4T1u + 5T2u + 6Gu + 7Hu IR active Raman active IR 526, 576, 1182, 1428 -1 [7] NMR C60 100 C [3] C60 XRD fcc-C60 (>260 K) Fm-3m A= nm (270 K) sc-C60 (<260 K) Pa-3 A= nm (170 K) C60 (sin / ) / 1 Intensity / arb.

2 Units(a) calc.(b) C60 SM 0 j0 (P. A. Heiney et al., PRL, 66, 2911, (1991)) SM(s) = 60 fc(s)j0(QR) = 60 fc(s) sin(QR)QR CV LUMO HOMO C60+ [7] C70 D5h) C60 36 C76 C78 C82 C84 [3] C60 (111) (100) C60 (SWCNT) a1 a2 (4, 4 (n, m) = = 2+ 2+ a C-C =3 : UV-Vis-nIR [18] , et al., Science, 301, 1519-1522, (2003) S22 S11 [20] Web site of prof.

3 Maruyama (Tokyo Univ.) 010002000 Raman Shift / cm 1 Intensity / arb. unit100012001400160018002000 Raman Shift / cm 1 Intensity / arb. units532nm633nm =248 RBM G-band BWF D-band G+ G- G+ G- [20] Web site of prof. Maruyama (Tokyo Univ.) Chiral 15 Achiral 16 [19] R. Saito, Physical properties of carbon nanotubes, (Imprial College press), (1998) 10,10 [19] R. Saito, Physical properties of carbon nanotubes, (Imprial College press), (1998) [21] 2002 [21] 2002 ObservedSimulatedScattering factor(10)(11)(20)(21)Gr(002)Intensity / arb. nm nm Q (4 sin / ) / -1 SM 0 j0 SM(s) = fc(s)j0(QR) M.

4 Endo, et al., Nature DWCNT: MWCNT: graphite graphene PRB 97, 187401 G D D G [17] , , 2004 XRD 2 / deg. Cu K Fd-3m (227) a= 111 220 311 (0,0,0), (1/4,1/4,1/4), (1/2,1/2,0), (1/2,0,1/2), (0,1/2,1/2),(1/4,3/4,3/4), (3/4,1/4,3/4), (3/4,3/4,1/4) hkl h+k+l=4m+2 [26] W. Saslow, et al., Phys. Rev. Lett., 16, 354, (1966) 25+ F2 T2g 1333 cm-1 F2 PRB 1, 1687 (lonsdaleite) P63/mmc a = c = u- parameter XRD P63/mmc a = c = 002 100 101 102 004 103 104 110 12 vibrational modes = A2u + E1u + A2u + E1u + 2E2g + 2B1 Acoustic mode IR active Raman active silent [29] , G.

5 Dresselhaus, Lattice mode strucuture of graphite intercalation compounds, (1979) [30] T. Enoki, M. Suzuki, M. Endo, Graphite Intercalation Compounds and Applications, (Oxford), (2003) HOPG C a b ab c HOPG c PGS 2 3 Ic Ic ( ) = ds + (n-1) ds R-3m (166) a = c = XRD P1 002 Raman R ID/IG [34] , 2001 P1 2 ( ) = 2(1 +cos22 )4 sin (sin2 sin2 0 ) ( ) cos2 3 = 3=sin2 sin2 002 2=4 2cos2 (23 +13 )

6 =exp2 ( + ) N PnR : Pn0 Pn+ Xn=2/3 Yn=1/3 Pn- Xn=-2/3 Yn=-1/3 = 0+ ++ cos2 (23 +13 ) P1 1= 1++ 1 .. Husk Shell cm PA N [32] 1996 C 95 99 O 1 H S [34]

7 , 2001 Ceramics Micelle rod Polymer Micelle rod (Template) Ceramics Mesopore carbon Heat treatment (N2 flow) Ceramics precursor carbon precursor Heat treatment (in air) Tri -constituent co-assembly method