Table 3.

The number of BS-BS hydrogen bonds and number of BS–water hydrogen bonds of four groups of BS [41]. Secondary unconjugated BS could be characterized by the smallest number of BS-BS HBs and number of BS–water HBs, while the primary conjugated has the highest number of BS–water HBs.

Molecule	No. of BS–BS HBs	No. BS–Water HBs
Primary unconjugated	0.08 ± 0.13	15.00 ± 1.41
Primary conjugated	0.305 ± 0.35	16.50 ± 1.41
Secondary unconjugated	0.06 ± 0.11	13.00 ± 1.41
Secondary conjugated	0.305 ± 0.30	14.00 ± 1.41