Abstract
We have synthesized a paramagnetic organometallic liquid crystal polymer containing a tetradentate Schiff base complex of copper II. The main chain liquid crystal polymer forms when the functionalized complex is combined at 220°C with the melt of a low molecular weight terpolymer. The terpolymer is a nematic liquid crystal at this temperature and contains oxybenzoate, dioxyphenyl, and pimeloate structural units. The organometallic material melts reversibly into a liquid crystalline fluid at a slightly lower temperature than the terpolymer. In external magnetic fields the tendency is for the backbone axis of the organometallic fluid to rotate away from the field direction. This observation suggests that strong interactions between the field and the paramagnetic units dictate the orientation of diamagnetic chemical sequences which normally align parallel to the magnetic field.
| Original language | English |
|---|---|
| Pages (from-to) | 251-256 |
| Number of pages | 6 |
| Journal | Polymer Bulletin |
| Volume | 19 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 1988 |
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ASJC Scopus subject areas
- Polymers and Plastics
- Materials Chemistry
Cite this
Paramagnetic organometallic liquid crystal polymers. / Moore, J. S.; Stupp, Samuel I.
In: Polymer Bulletin, Vol. 19, No. 3, 03.1988, p. 251-256.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Paramagnetic organometallic liquid crystal polymers
AU - Moore, J. S.
AU - Stupp, Samuel I
PY - 1988/3
Y1 - 1988/3
N2 - We have synthesized a paramagnetic organometallic liquid crystal polymer containing a tetradentate Schiff base complex of copper II. The main chain liquid crystal polymer forms when the functionalized complex is combined at 220°C with the melt of a low molecular weight terpolymer. The terpolymer is a nematic liquid crystal at this temperature and contains oxybenzoate, dioxyphenyl, and pimeloate structural units. The organometallic material melts reversibly into a liquid crystalline fluid at a slightly lower temperature than the terpolymer. In external magnetic fields the tendency is for the backbone axis of the organometallic fluid to rotate away from the field direction. This observation suggests that strong interactions between the field and the paramagnetic units dictate the orientation of diamagnetic chemical sequences which normally align parallel to the magnetic field.
AB - We have synthesized a paramagnetic organometallic liquid crystal polymer containing a tetradentate Schiff base complex of copper II. The main chain liquid crystal polymer forms when the functionalized complex is combined at 220°C with the melt of a low molecular weight terpolymer. The terpolymer is a nematic liquid crystal at this temperature and contains oxybenzoate, dioxyphenyl, and pimeloate structural units. The organometallic material melts reversibly into a liquid crystalline fluid at a slightly lower temperature than the terpolymer. In external magnetic fields the tendency is for the backbone axis of the organometallic fluid to rotate away from the field direction. This observation suggests that strong interactions between the field and the paramagnetic units dictate the orientation of diamagnetic chemical sequences which normally align parallel to the magnetic field.
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UR - http://www.scopus.com/inward/citedby.url?scp=0023966497&partnerID=8YFLogxK
U2 - 10.1007/BF00255380
DO - 10.1007/BF00255380
M3 - Article
VL - 19
SP - 251
EP - 256
JO - Polymer Bulletin
JF - Polymer Bulletin
SN - 0170-0839
IS - 3
ER -