Copper-containing dendromesogens: the influence of the metal on the mesomorphism |
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| Authors: | Joaquin Barbera Mercedes Marcos Ana Omenat Jose-Luis Serrano Jesus I Martinez Pablo J Alonso |
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| Institution: | 1. Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;2. Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemical Engineering, Hefei University of Technology, Hefei, Anhui, People’s Republic of China;3. School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei, People’s Republic of China |
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| Abstract: | The synthesis and liquid crystalline behaviour of the first and second generations of a dendrimeric structure based on poly(propyleneimine)(DAB-dendr(NH2)x) are reported. 4-(4-n-Alkoxybenzoyloxy)salicylaldehydes are used as mesogenic moieties attached at the peripheral amino groups of the dendrimers giving rise to dendromesogens with four and eight mesogenic branches. From these dendromesogens, considered as organic ligands, were prepared six metal-containing dendrimers which incorporate two or four copper atoms in their structures. All the dendrimeric ligands and three of the metal-containing dendrimers exhibit liquid crystalline properties which were studied by optical microscopy, DSC, X-ray diffraction and EPR spectroscopy. |
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| Keywords: | polymer-stabilised cholesteric texture domain size cell gap electro-optical property polymer network |
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