Zinc bisquinoline assemblies

Self-assembly methods have been used to form zinc bisquinoline assemblies with high refractive index and film uniformity.287... 

Multilayer Growth, Optical Properties, and Film Uniformity of Zinc-Bisquinoline Assemblies... 

Scheme I illustrates the self-assembly growth of zinc-bisquinoline from 8,8 -dihydroxy-5,5 -biquinoline (bisquinoline). The reaction of bisquinoline with Zn(Et)2 is almost instantaneous. Figure 1 illustrates the ellipsometrically determined film thicknesses as a function of dip cycle. The two markedly different regimes (Stage I and Stage II) with growth rates of 8.3 and 26.5 A/dip cycle (d.c.) respectively, indicate a complex film growth. Films thicker than 250 A maintain the 26.5 A/d.c. growth rate as far as we have measured (c.a. 1,275 A).

Scheme 1. Schematic representation of the self-assembly growth of poly(zinc-bisquinoline).

Figure 1. Ellipsometrically determined thickness versus successive dip cycles for the poly(zinc-bisquinoline) self-assembly process.

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