Three methyl end-capped oligo(ethylene glycol) (MOEG) ethers (1b-d) and a methoxyderivative (1a) of benzofulvene monomer BFSk were synthesized and induced to polymerize spontaneously by solvent removal to obtain soluble π-stacked polymers bearing densely grafted MOEG side chains (poly-1b-d) and model polymer poly-la. The physicochemical features (e.g., solubility, NMR, MALDI-TOF, and absorption/emission spectra, as well as MWD, conformation plot, and thermal properties) of the synthesized polymers were compared in a structure-property relationship study. This approach afforded the following evidence. The structure of poly-1a-d is very similar to that of BF3k, suggesting that the polymerization mechanism is not affected by the presence of the electron-rich methoxy group or bulkier MOEG side chains. However, the latter appear to be capable of affecting the conformational behavior of the polymer backbone. The solubility of poly-1a-d depends on the number of the oligo (ethylene glycol) monomeric units. In particular, poly-1d, featuring a long MOEG side chain (n = 9), shows an amphophilic character and is soluble in a number of organic solvents, whereas it interacts with water to give isolated macromolecules in equilibrium with nanosized water-soluble aggregates. ©2010 Wiley Periodicals, Inc.

Cappelli, A., Paolino, M., Anzini, P., Giuliani, G., Valenti, S., Aggravi, M., et al. (2010). Structure-Property Relationships in Densely Grafted π-Stacked Polymers. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY, 48(11), 2446-2461 [10.1002/pola.24016].

Structure-Property Relationships in Densely Grafted π-Stacked Polymers

Cappelli, Andrea;Paolino, Marco;Giuliani, Germano;Donati, Alessandro;Paccagnini, Eugenio;Vomero, Salvatore
2010-01-01

Abstract

Three methyl end-capped oligo(ethylene glycol) (MOEG) ethers (1b-d) and a methoxyderivative (1a) of benzofulvene monomer BFSk were synthesized and induced to polymerize spontaneously by solvent removal to obtain soluble π-stacked polymers bearing densely grafted MOEG side chains (poly-1b-d) and model polymer poly-la. The physicochemical features (e.g., solubility, NMR, MALDI-TOF, and absorption/emission spectra, as well as MWD, conformation plot, and thermal properties) of the synthesized polymers were compared in a structure-property relationship study. This approach afforded the following evidence. The structure of poly-1a-d is very similar to that of BF3k, suggesting that the polymerization mechanism is not affected by the presence of the electron-rich methoxy group or bulkier MOEG side chains. However, the latter appear to be capable of affecting the conformational behavior of the polymer backbone. The solubility of poly-1a-d depends on the number of the oligo (ethylene glycol) monomeric units. In particular, poly-1d, featuring a long MOEG side chain (n = 9), shows an amphophilic character and is soluble in a number of organic solvents, whereas it interacts with water to give isolated macromolecules in equilibrium with nanosized water-soluble aggregates. ©2010 Wiley Periodicals, Inc.
2010
Cappelli, A., Paolino, M., Anzini, P., Giuliani, G., Valenti, S., Aggravi, M., et al. (2010). Structure-Property Relationships in Densely Grafted π-Stacked Polymers. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY, 48(11), 2446-2461 [10.1002/pola.24016].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/8641
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