It is found that DPI-T shows a higher photocurrent than BPI-T due to the excellent conjugation system with relatively better electron-donating ability and smaller steric hindrance
, which produces a broader absorption spectrum and a higher extinction coefficient.
Due to electrostatic repulsion and steric hindrance
of the CTBA barrier, the agglomeration and growth of Ti[O.sub.2] grain was inhibited, the particle size of Ti[O.sub.2] was significantly reduced, and the specific surface area increased.
Compounds 2a-d provide low cytotoxicity due to the occurrence of steric hindrance
which prevent them from reaching the receptor of enzymes.
As shown in the tridimensional structural model of FVIII, the cysteine residue may cause a steric hindrance
The absence of substituent on phenyl ring and the presence of CH2 or NH groups attached to ring in complexes could contribute in decreasing steric hindrance
near the metal centre.
For the emulsion polymerization with A3, the low conversion rate could be due to steric hindrance
caused by the longer EO chain of A3.
In the small intestine, the macromolecules cannot permeate through tight junctions of the intestinal cell wall because of multiple factors, including molecular size and steric hindrance
effects, and are vulnerable to further enzymatic and hydrolytic degradation.
Strong steric hindrance
is expected for the [pi] Ru complex with the internal double bond in the grandiflorenic substrate, leading to no hydrogenation of this internal double bond.
The structure of such haptens makes interaction with 2 binding proteins (e.g., antibodies) very unlikely because of steric hindrance
that occurs following binding of a hapten to one binding protein.
Chitosan contributed the steric hindrance
to stabilize the nanoparticles as shown in Figure 1.
Furthermore, the steric hindrance
in the transition-state also affects the selectivities of Michael adducts.
This movement could be due to less steric hindrance
with Ala 44, Met 67, and Ala 74-75 and aiding the ligand to be in the hydrophobic pocket and the remaining part of the ligand to be in the polar region of the protein.