Citation: . SYNTHESIS AND PROPERTIES OF A NEW AZOBENZENE SIDE-CHAIN POLYMER CONTAINING A TEMPO RADICAL*[J]. Chinese Journal of Polymer Science, ;2002, 20(4): 285-290. shu

SYNTHESIS AND PROPERTIES OF A NEW AZOBENZENE SIDE-CHAIN POLYMER CONTAINING A TEMPO RADICAL*

Received Date: 2 April 2002
Revised Date: 20 April 2002

To allow anisotropies of optical properties in a magnetic field, nitroxide radical is introduced into the ortho-position of the phenylene ring in the side chain. A new azobenzene side-chain polymer (TEMPO-PAZ) containing TEMPOradical was synthesized. The polymer has a good solubility in organic solvents. The ESR spectrum of the polymer indicatedthree absorption lines characteristic of TEMPO radical. The optical phase conjugated responses (I4) of the polymer films were investigated by degenerate four-wave mixing (DFWM).The experimental results showed that optical phase conjugated response of the TEMPO-PAZ could be easily controlled by choosing the appropriate direction of magnetic field presumably due to the nitroxide radical in the TEMPO-PAZ molecular structure.For the polymer investigated here,the nitroxide radical was introduced to increase optical phase conjugated response intensity in a magnetic field,aiming originally at searching for a new photo-active organic magnetic multifunctional materials.
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