The degree of substitution is the average number of substituent groups attached per base or monomeric unit
where [L.sub.m] is the length of the monomeric unit
In fact, the positive charge density of each monomeric unit
of MB must decrease the electrostatic repulsion, mainly when the relative distance between the monomers is high, allowing a significant interaction of the MB units.
oil, avocado oil tested concentrations; (b) 3HB, 3-hydroxybutyrate; 3HV, 3-hydroxyvalerate; 3HA, unidentified hydroxyl acid monomeric unit
with more than 5 carbons.
In order to optimize a living anionic system to maximize the efficiency of a given post-polymerization linking reaction, several factors must be considered including the nature of the coordinating cation, the polar environment, the monomeric unit
at the propagating chain end, and the molar stoichiometry of the linking agent to chain end concentration.
Prior methods for linking a label to a nucleotide probe have generally utilized a single label attached to a nucleosidic monomeric unit
, and then incorporating one or more of the nucleosidic monomeric units
into the probe.
Regarding the monomeric unit
proportions of the homopolymer in the copolymer, we decided to study three different proportions, and to build copolymers in a periodic way (Fig.
The two signals centered at 4.42 and 4.24 ppm correspond to the two methylenic carbon c' protons in the modified monomeric unit
; the signal centered at 3.90 ppm corresponds to the methylene attached to the oxygen in the alkyl chains of the mesogenic unit and to the methynic proton b'.
The nitrile group absorption peak at 2260 [cm.sup.-1] weakens slightly because the polycondensation of nitrile groups occurs in the monomeric unit
where [G.sub.e] is the shear modulus in the elastomeric region and can be estimated as [G.sub.e] = [E'.sub.e]/3, [rho] is the density, [M.sub.u] the molecular weight of the monomeric unit
, and R is the gas constant.
and the branching density (i.e., the number of branching points per monomeric unit
Another feature of chiral compounds as guests in a liquid crystalline host is the helical twisting power (HTP)[Beta] of the chiral monomeric unit
(7, 9), which is defined as