Nakata, Yasukazu published the artcileA new type of main-chain liquid-crystal polymer derived from 4-hydroxybiphenyl-4-carboxylic acid and its smectic mesophase behavior, Quality Control of 50670-76-3, the publication is Journal of Materials Chemistry (1994), 4(11), 1699-703, database is CAplus.
A homologous series of polymers (PHBC-n) was prepared from 4′-hydroxybiphenyl-4-carboxylic acid and ω-bromoalkan-1-ols containing 5-9 CH2 units which can serve as mesogen and flexible spacer groups, resp. The PHBC-n polymers are characterized by having 2 different linkage groups, ether and ester groups, to connect the biphenyl mesogen to the methylene spacer, and are considered to be a new type of main-chain liquid-crystal polymer. All polymers exhibit the enantiotropic smectic phase. The smectic behavior and structure were examined by differential scanning calorimetry, optical microscopic and x-ray diffraction methods, and are discussed in comparison with the corresponding data of the BB-n polyesters, which include only the ester linkage group.
Journal of Materials Chemistry published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Quality Control of 50670-76-3.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics