Table 1

Spectral data and assignments for SWNTs.

λ11(nm)λ22 (nm)hν11(eV)hν22 (eV)AssignmentPredicted ν̄RBM(cm−1)*Observed ν̄RBM(cm−1)
833483 1.488 2.567(5,4)372.7373
873581 1.420 2.134(6,4)335.2
912693 1.359 1.789(9,1)307.4
952663 1.302 1.870(8,3)298.1297
975567 1.272 2.187(6,5)307.4
1023644 1.212 1.925(7,5)281.9283
1053734 1.177 1.689(10,2)265.1264§
1101720 1.126 1.722(9,4)256.4
1113587 1.114 2.112(8,4)278.3
1122647 1.105 1.916(7,6)262.1264
1139551 1.088 2.250(9,2)289.7
1171797 1.059 1.556(12,1)237.0236|
1172716 1.058 1.732(8,6)243.7
1197792 1.036 1.565(11,3)232.8233
1244671 0.997 1.848(9,5)241.4
1250633 0.992 1.959(10,3)251.1251
1250786 0.992 1.577(10,5)225.1225
1263611 0.982 2.029(11,1)256.4
1267728 0.979 1.703(8,7)228.9
1307859 0.949 1.443(13,2)211.9
1323790 0.937 1.569(9,7)214.9215
1342857 0.924 1.447(12,4)207.5
1372714 0.904 1.736(11,4)221.5
1376685 0.901 1.810(12,2)227.0
1380756 0.898 1.640(10,6)213.4
1397858 0.887 1.445(11,6)200.8
1414809 0.877 1.533(9,8)203.4
1425927 0.870 1.337(15,1)193.6
1474868 0.841 1.428(10,8)192.5
1485928 0.835 1.336(13,5)187.2
1496795 0.829 1.559(12,5)198.3
1497760 0.828 1.631(13,3)203.4
1555892 0.797 1.390(10,9)183.3
  • * Using the expression ν̄RBM =Embedded Image+ 12.5 and assuming a C–C bond distance of 0.144 nm.

  • Raman excitation wavelength 830 nm.

  • Raman excitation wavelengths 633 nm and 636 to 672 nm.

  • § Raman excitation wavelength 1064 nm.

  • | Raman excitation wavelength 782 nm.

  • Raman excitation wavelength 785 nm.