A mild and efficient method to prepare oligophenylenes (PPPs)

Author(s)

Rodrigues, Rebeca Rocha ^[1] ; Raminelli, Cristiano ^[2] ; Peres, Laura Oliveira ^[1]

Affiliation

^[1] Univ Fed Sao Paulo, Hybrid Mat Lab, Chem Dept, Diadema, SP - Brazil

^[2] Univ Fed Sao Paulo, Chem Dept, Lab Organ Synth & Mol Modeling, Diadema, SP - Brazil

• Document type: Journal article
• Source: EUROPEAN POLYMER JOURNAL; v. 106, p. 202-205, SEP 2018.
• Web of Science Citations: 1

Abstract

In the present work we developed a practical, faster, and more sustainable way to prepare conjugated materials, derived from poly-p-phenylenes (PPPs), using 10% palladium on carbon as catalyst and distilled water as solvent under microwave heating for 3 h. The oligomers were also prepared by the classical Suzuki reaction to enable a comparison of results. All materials were characterized by nuclear magnetic resonance (NMR), infrared (IR), absorption and emission analysis, gel permeation chromatography (GPC), and thermogravimetric analysis. The polymers prepared by the alternative method were obtained in higher yields than the polymers produced by the classical Suzuki reaction. In addition, characterization data showed no significant differences in terms of molecular structures and luminescent properties between the polymers synthesized through the different protocols. Therefore, the alternative method developed was considered appropriated for the synthesis of PPPs derivatives. (AU)

• FAPESP's process: 15/09984-9 - Development of new routes for preparation of aryne precursors with application in stereoselective syntheses of bioactive alkaloids
• Grantee: Cristiano Raminelli
• Support Opportunities: Regular Research Grants