Table 1.
13C CP/MAS and 29Si MAS NMR data (δ in ppm) of the BSs hybrids. R' stands for –(CH2)3NH(CH2)3−.
| Sample | Attribution | |||
|---|---|---|---|---|
| BS-1 | BS-2 | BS-3 | BS-4 | |
| 13C CP/MAS | ||||
| 51.7 | 51.7 | 51.5 | 51.6 | SiCH2CH2CH2NHCH2 |
| 23.5 | 23.1 | 23.2 | 23.2 | SiCH2CH2 |
| 11.3 | 11.2 | 11.3 | 11.2 | SiCH2 |
| 29Si MAS | ||||
| −53.0 (2.7) | −53.4 (13.5) | −51.5 (8.8) | −50.7 (5.1) | T1 (%) |
| −59.6 (31.1) | −59.6 (30.9) | −59.8 (29.0) | −59.5 (23.1) | T2 (%) |
| −67.7 (51.6) | −67.6 (55.6) | −68.2 (38.7) | −67.4 (51.7) | T3 (%) |
| – | – | – | −87.8 (1.2) | Q1 (%) |
| – | – | −102.9 (5.4) | −99.6 (4.3) | Q2 (%) |
| – | – | −112.5 (11.1) | −109.7 (12.5) | Q3 (%) |
| – | – | −118.9 (7.0) | −117.0 (2.1) | Q4 (%) |
| 84 | 81 | 83 | 88 | ca |
| - | – | 79 | 83 | db |
| R'0.5Si(O)1.3(OH)0.5 | R'0.5Si(O)1.2(OH)0.6 | – | – | Empirical formula |
a
c = 1/3(%T1 + 2 × %T2 + 3 × %T3) × 100.
b
d = 1/3(%T1 + 2 × %T2 + 3 × %T3) + 1/4(%Q1 + 2 × %Q2 + 3 × %Q3 + 4 × %Q4) × 100.