Environmental Engineering Reference
In-Depth Information
29
O
O
O
O
O
NH
F
O
F
F
F
F
F
HN
F
F
F
F
F
O
O
F
O
F
F
F
F
F
O
F
F
F
F
F
O
O
O
O
F
F
F
F
F
F
F
F
F
O
5
O
F
F
F
F
F
F
F
F
O
F
F
F
O
F
F
O
F
F
O
HN
F
F
O
F
F
F
F
O
F
F
F
F
F
O
O
F
O
O
F
F
O
F
O
O
F
O
O
F
F
O
F
F
F
F
F
F
F
F
O
F
F
O
O
F
F
F
F
NH
F
F
31
F
F
O
O
NH
NH
O
O
F
O
F
O
O
OH
O
O
O
F
F
F
F
O
34
F
F
F
O
F
F
F
F
O
NH
HN
F
O
F
F
F
O
O
F
Si
F
F
O
O
O
O
O
O
31
Si
4
O
NH
2
Figure 2.23
HBFP-PEG crosslinked networks attached covalently to APTES glass
microscope slides
Hybrid xerogels are a glass like, crosslinked polymer network achieved using
the sol-gel process [10]. Tang and co-workers [90] prepared xerogel ilms from
n
-propyltrimethoxysilane and tetramethyl orthosilane (TMOS) (45:55 mol ratio),
bis
[3-(TMOS)propyl]-ethylenediamine and tetraethyl orthosilane (TEOS) (2:98
mol ratio),
n
-octyltriethoxysilane (C8-TEOS) and TMOS (50:50 mol ratio), and
3,3,3-triluoropropyl TMOS and TMOS (50:50 mol ratio). The xerogels showed
excellent inhibition of the settlement of zoospores of
Ulva
and also released the
already settled zoospores. The
n
-octyl xerogel (C8-TEOS - TMOS) was much better
