Accession Number:

ADA250655

Title:

Organometallic Nonlinear Optical (NLO) Polymers. 2. Synthesis of Main-Chain Organometallic Polymers and a Structural Study of Ferrocene NLO-Phores

Descriptive Note:

Technical rept.,

Corporate Author:

UTAH STATE UNIV LOGAN DEPT OF CHEMISTRY AND BIOCHEMISTRY

Report Date:

1992-05-10

Pagination or Media Count:

27.0

Abstract:

A detailed structural analysis of several ferrocene based NLO-phores were examined by X-ray diffraction. The study illustrated that electron-withdrawing groups favor and control planarity of the Pi system. Through selective functionalization of the cyclopentadienyl rings of ferrocene new monomers, were prepared in the study. One monomer was suitable for Lewis acid catalyzed transesterification-polymerization using TiOC4H94 and others were appropriate for a Knoevenagel polycondensation. The transesterification polymerization resulted in formation of an intractable polymeric material of unknown structure. The homopolymerization by the Knoevenagel technique afforded the desired polymer. The polymer was characterized by GPC and spectroscopic data. A major by-product in the polymerization was the macrocyclic lactone 10a produced from an intramolecular Knoevenagel condensation. The lactone structure was confirmed by single-crystal X-ray diffraction.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE