In some embodiments, the inventions described herein relate to a composition of matter comprising a molecule having the structure: wherein: independently at each occurrence, R
1
is a halogen, a alkyl group, a heteroalkyl group, an aryl group, or a heteroaryl group; R
2
comprises from 3 to 30 CH
2
— groups, n=0-5, m=0-5, q=1-3, and R
2
comprises at least one ether linkage
在某些实施例中,本文所描述的发明涉及一种物质组成,其包括具有以下结构的分子:其中:在每次出现时,R1是卤素、烷基、杂环烷基、芳基或杂芳基中的一种;R2包括从3到30个
CH2-基团,n=0-5,m=0-5,q=1-3,并且R2至少包括一个醚键。