Table 2
Cross-polarized solid state29Si-MAS NMR spectroscopy data of SAM- MSNs
Sample chemical shift (ppm)
	Q4	Q3	T3	T2
Vi-SAM-MSN	Q4	Q3	T3	T2
Pr-SAM-MSN	−110	−101	−79	−70
Is-SAM-MSN	−110	−101	−66	−57
Ph-SAM-MSN	−110	−101	−57	−48

Wei et al. Nanoscale Research Letters 2012 7:334   doi:10.1186/1556-276X-7-334