1233320-01-8Relevant academic research and scientific papers
Structure-property relationships in densely grafted π-stacked polymers
Cappelli, Andrea,Paolino, Marco,Anzini, Paolo,Giuliani, Germano,Valenti, Salvatore,Aggravi, Marianna,Donati, Alessandro,Mendichi, Raniero,Zetta, Lucia,Boccia, Antonella Caterina,Bertini, Fabio,Samperi, Filippo,Battlato, Salvatore,Paccagnini, Eugenio,Vomero, Salvatore
, p. 2446 - 2461 (2011/03/22)
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.
