Photophysical properties of the fullerene C60 core of a 6-arm polystyrene star

Optical limiting and nonlinear optical absorption properties of C60–polystyrene star polymer films: C60 concentration dependence

“…18 The photophysical properties of the six-arm C 60polystyrene star C 60 -(PS 1400 ) 6 in solution have been reported recently. 37 The quantum yield for the production of the triplet state was found to be lower (0.65) than that of the C 60 molecule in toluene solution (y1). 37 The reduction of the triplet state quantum yield with respect to C 60 in solution can be understood in terms of the loss of double bonds of the C 60 cage after grafting of the PS chains 17 and because of the solid state nature of the films studied here.…”

“…37 The quantum yield for the production of the triplet state was found to be lower (0.65) than that of the C 60 molecule in toluene solution (y1). 37 The reduction of the triplet state quantum yield with respect to C 60 in solution can be understood in terms of the loss of double bonds of the C 60 cage after grafting of the PS chains 17 and because of the solid state nature of the films studied here. Furthermore, triplettriplet absorption spectra showed a peak near 650 nm, blue shifted by about 100 nm as compared to C 60 , 13 a shift similar to that reported for other fullerene compounds with addends.…”

Nanostructure evolution during thermal treatment of polyimide–fullerene composites as revealed by WAXS and SAXS

“…For instance, several researchers have obtained polymers with C 60 ending chains [3,4]. In other cases, fullerenegrafted polymer chains have been developed [5][6][7][8][9][10], or chemical combinations of both components [11]. Other alternative is the preparation of blends or composites polymer/fullerene.…”

Synthesis and Characterization of Star Copolymers Consisting of Fullerene and Conjugated Polyphenylene: 6-star-C60[styrene−poly(1,4-phenylene)-block-polystyrene] and 6-star-C60[polystyrene-block-poly(1,4-phenylene)]

“…The quenching capabilities of C 60 , even when substituted by six polymers, are known to remain relatively strong. 55 It remains possible that intracopolymer crystallization of PPP was occurring within C 60 (st-PPP-PS) 6 , reducing the observed fluorescence through thermal relaxation processes. As noted above, the 1 H NMR of C 60 (st-PPP-PS) 6 indicated intramolecular crystallization of PPP "arms" may have occurred.…”