Fused-ring and linking group effects of proton donors and acceptors on simple H-bonded liquid crystals

Hong-Cheu Lin, Ji Mei Shiaw, Chin Yi Wu, Chiitang Tsai

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Two fused-ring structures, 6-decyloxy-2-naphthoic acid C10ONA (3) and 6-dodecyloxyisoquinoline IS (8), were synthesized and utilized as proton donor and acceptor moieties to construct a series of simple mesogenic supramolecules. The other complementary hydrogen-bonded (H-bonded) moieties are benzoic acids, thiophenecarboxylic acid and pyridines containing different alkyl chain lengths connected by ether and ester linkages, i.e. 4-alkoxybenzoic acid CnOBA (1), terephthalic acid monoalkyl ester CnCOOBA (2), 2,5-thiophenedicarboxylic acid monodecyl ester C10COOTHA (4), 4-alkoxypyridine CnOP (6) and isonicotinic acid alkyl ester CnCOOP (7). Several series of simple mesogenic supramolecular dimers were constructed from 1:1 molar ratios of proton donors (CnOBA, CnCOOBA, C10ONA and C10COOTHA) and proton acceptors (IS, CnOP and CnCOOP), though the proton acceptor CnCOOP induced phase separation in all complexes. In order to investigate their fused-ring and linking group effects on the mesogenic properties of the H-bonded complexes, analogous simple supramolecular structures are compared. Supramolecular architecture and the distinct mesomorphism of these simple H-bonded liquid crystalline materials were confirmed by polarizing optical microscopy, DSC and powder X-ray diffraction experiments.

Original languageEnglish
Pages (from-to)1103-1112
Number of pages10
JournalLiquid Crystals
Volume27
Issue number8
DOIs
StatePublished - 1 Jan 2000

Fingerprint Dive into the research topics of 'Fused-ring and linking group effects of proton donors and acceptors on simple H-bonded liquid crystals'. Together they form a unique fingerprint.

Cite this