文档介绍：Moderately High Refractive Index, Low Optical Dispersion Polymers with Pendant Diamondoids J. APPL. POLYM. SCI. 2013, Wileyonline
Reportor: LiYang Date:05/03/2013
20112310607
Diamondoids
Introduction
Optical plastics are widely used
to produce lenses, viewfinders, windows, data storage media, light-diffusing elements etc.
The field is dominated modity polymers such as poly (methyl methacrylate) (PMMA), polycarbonate (PC), and polystyrene (PS). However, no one material is ideal for all applications, leading to numerous efforts of produce optical polymers with customized properties.
Cyclic Olefin Copolymers Advanced Materails & Producesses /March 2001
COCs
One important parameter for optical polymers is dispersion, the variance of refractive index with wavelength. Low dispersion in the visible region is desirable for optical plastics because of reduced chromatic aberration. Dispersion is often characterized by the Abbe number, which is approximately inversely proportional to optical dispersion.
The other factor for optical polymers is refractive index.
Comparison of COCs and the diamond structure led us to consider whether polymers containing small polycyclic units of diamond (‘‘diamondoids’’) might possess valuable optical properties.
It has an extraordinarily high refractive index (nd=)
One might hope to gain increased refractive index from the relatively high carbon-to-hydrogen ratio (and therefore high density) of diamondoids, but avoid high optical dispersion that is associated with UV absorption bands from unsaturated moieties such as aromatic rings. Along the same lines, saturated polycyclic hydrocarbons such as the diamondoids have very low absorption in the visible, obviously crucial for many optical applications.
3 JANUARY 2003 VOL 299 SCIENCE
Experimental
Table I. Synthesis and Properties of Adamantane-Containing Acrylic Polymers
Synthesis and properties of Poly(1-Vinyladamantane) (pVa)
Result and Discussion
Thin films of the t