Polymerization of Phenylacetylene-Based Monodendrons with Alkoxy Peripheral Groups and Oxygen/Nitrogen Permeation Behavior of Their Membranes

Table 2

Column structure of polydendrons.

Polymers	Generation number	Density^a (g/cm^3)	2θ ^b (deg)	d spacing^c (Å)	Column diameter
					WAXS^d (Å)	Calcd^e (Å)
poly(HG1PA)^f	1	1.068	3.1	30.5	35.2	43.0
poly(HG0PA)^f	0	1.062	3.3	28.7	33.1	36.7

^a Determined by floating method containing error of ±0.005.
^bCrystalline peak of the wide-angle X-ray scattering (WAXS) of the polymers.
^c Estimated from 2θ.
^d Estimated from d (column diameter = 2d/√3).
^e Estimated from molecular modeling, which was performed as described in text. (The molecular modeling was performed on the assumption of a fully extended conformation for side-chain monodendronsn and distorted cis-transoid main chain conformation (dihedral angle = 130 deg), as described in [7].)