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Synthesis and properties of poly(p-phenylene vinylene) derivatives with hyperbranched structure and containing a nitro substituent.

Li R, Mo Y, Shi R, Li P, Li C, Wang Z, Wang X, Li S - Monatsh. Chem. (2013)

Bottom Line: In order to improve efficiency, processability, and stability, two groups of novel poly(p-phenylene vinylene) (PPV) derivatives (P1-P3 and P4-P6) with hyperbranched structure and containing a nitro substituent were synthesized via a Gilch reaction in different monomer ratios.The result shows that the band gaps of the PPV derivatives with a nitro substituent were decreased and the polymers had higher molecular weights (10(6)), excellent solubility in common organic solvents, good film-forming ability, and better thermal stability.The polymers can be used as an efficient acceptor material in polymeric solar cells.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry, Central China Normal University (CCNU), Wuhan, 430079 Hubei China.

ABSTRACT

Abstract: In order to improve efficiency, processability, and stability, two groups of novel poly(p-phenylene vinylene) (PPV) derivatives (P1-P3 and P4-P6) with hyperbranched structure and containing a nitro substituent were synthesized via a Gilch reaction in different monomer ratios. The properties of the polymers were investigated by using UV-Vis absorption, fluorescence spectroscopy, cyclic voltammetry, and thermogravimetric analysis. The result shows that the band gaps of the PPV derivatives with a nitro substituent were decreased and the polymers had higher molecular weights (10(6)), excellent solubility in common organic solvents, good film-forming ability, and better thermal stability. The polymers can be used as an efficient acceptor material in polymeric solar cells.

No MeSH data available.


Related in: MedlinePlus

TGA of P1–P6
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Fig1: TGA of P1–P6

Mentions: The thermal properties of the hyperbranched polymers were investigated using thermogravimetric analysis (TGA). The polymers exhibited high thermal stability and onset of weight loss temperatures of 375, 377, 382 and 358, 379, 382 °C for P1, P2, P3 and P4, P5, P6, respectively, as shown in the TGA curves in Fig. 1. They were much higher than those for the linear MEH-PPV. The high thermal stability of these polymers could be of benefit to increase the stability of the PSC, which prevents morphological change, deformation, and degradation of the active layer [20].Fig. 1


Synthesis and properties of poly(p-phenylene vinylene) derivatives with hyperbranched structure and containing a nitro substituent.

Li R, Mo Y, Shi R, Li P, Li C, Wang Z, Wang X, Li S - Monatsh. Chem. (2013)

TGA of P1–P6
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4495047&req=5

Fig1: TGA of P1–P6
Mentions: The thermal properties of the hyperbranched polymers were investigated using thermogravimetric analysis (TGA). The polymers exhibited high thermal stability and onset of weight loss temperatures of 375, 377, 382 and 358, 379, 382 °C for P1, P2, P3 and P4, P5, P6, respectively, as shown in the TGA curves in Fig. 1. They were much higher than those for the linear MEH-PPV. The high thermal stability of these polymers could be of benefit to increase the stability of the PSC, which prevents morphological change, deformation, and degradation of the active layer [20].Fig. 1

Bottom Line: In order to improve efficiency, processability, and stability, two groups of novel poly(p-phenylene vinylene) (PPV) derivatives (P1-P3 and P4-P6) with hyperbranched structure and containing a nitro substituent were synthesized via a Gilch reaction in different monomer ratios.The result shows that the band gaps of the PPV derivatives with a nitro substituent were decreased and the polymers had higher molecular weights (10(6)), excellent solubility in common organic solvents, good film-forming ability, and better thermal stability.The polymers can be used as an efficient acceptor material in polymeric solar cells.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry, Central China Normal University (CCNU), Wuhan, 430079 Hubei China.

ABSTRACT

Abstract: In order to improve efficiency, processability, and stability, two groups of novel poly(p-phenylene vinylene) (PPV) derivatives (P1-P3 and P4-P6) with hyperbranched structure and containing a nitro substituent were synthesized via a Gilch reaction in different monomer ratios. The properties of the polymers were investigated by using UV-Vis absorption, fluorescence spectroscopy, cyclic voltammetry, and thermogravimetric analysis. The result shows that the band gaps of the PPV derivatives with a nitro substituent were decreased and the polymers had higher molecular weights (10(6)), excellent solubility in common organic solvents, good film-forming ability, and better thermal stability. The polymers can be used as an efficient acceptor material in polymeric solar cells.

No MeSH data available.


Related in: MedlinePlus