fig13

Figure 13. (A) ¹³C NMR spectra of ¹³C₆-TiO₂-0. The spectrum of glucose for reference. Spectra of ¹³C₆-TiO₂-0 with spectral editing; (B) 2D ¹³C–¹³C correlation spectrum of ¹³C₆-TiO₂-0. Inserts: two structural fragments consistent with the observed cross peaks; (C) ¹³C NMR spectra of ¹³C₆-TiO₂-5W: quantitative (DP) spectrum of all C and corresponding spectrum of nonprotonated C, J-modulated dephasing spectra, and selection of sp³-hybridized C by a five-pulse CSA filter. Reproduced with permission from^[192]. Copyright 2009, American Chemical Society. NMR: Nuclear magnetic resonance; 2D: two-dimensional; DP: direct polarization; CSA: chemical shift anisotropy.