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Synthesis and characterization of polymerizable β‐diketone‐based liquid crystalline metal chelates
Author(s) -
Zhaohui Zhou,
Youzhi Wan,
Fuzhou Wu,
Ping Xie,
Rongben Zhang
Publication year - 1996
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199608)7:8<662::aid-pat562>3.0.co;2-l
Subject(s) - materials science , chelation , characterization (materials science) , metal , diketone , polymer chemistry , organic chemistry , nanotechnology , metallurgy , chemistry
Two novel square‐planar palladium chelating liquid crystals, bis(p‐n‐(l‐undecenoxyphenyl‐3‐dodecyloxyphenyl)‐propane‐1,3‐dionato)palladium(II) (Pd‐C 11 ‐C 12 ) and bis(1,3‐di(p‐n‐tetradecyloxphenyl)‐propane‐1,3‐dionato) palladium (II) (Pd‐C 14 ‐C 14 ) have been synthesized. Moreover, the copper chelating liquid crystal bis(p‐n‐(l‐undecynoxylphenyl‐3‐dodecyloxylphenyl)‐propane‐1,3‐dionate)copper (II) (Cu‐Cu 11 ‐C 12 ) has been synthesized by heterogeneous ligand‐exchange reaction. These β‐ diketone metal chelates have been characterized by elementary analysis, differential scanning calorimetry, polarizing microscopy, X‐ray diffraction analysis and temperature‐variable IR. It was found that these chelates were discotic lamellar‐(D L ) mesophase liquid crystals. In particular, the temperature‐variable IR study indicates that the central chelating ring and the surrounding benzene rings would form a co‐planar conjugated structure in the liquid crystalline (LC) state .