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  • three-dimensional aggregation of fullerene c60 at the air–water interface

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1023
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper seeks to get a mechanistic insight into homomolecular aggregation of fullerenes in low-dimensional systems. for this purpose, the forced aggregation of fullerene c60 on two subphases (pristine water and aqueous 1% nacl solution) has been studied by analysis of the compression curves and brewster angle microscopy (bam). the analysis indicates that the highest ordered structure being achievable upon multi-cycle compression is the c60 hexalayer. the lower aggregation stages are directly observable by bam. the floating layers are stated to be organized as a binary colloid system c60–h2o, where the c60 component behaves as a guest initially but becomes a host towards the tetralayer stage. in turn, the h2o component inhibits the structural collapse and promotes the smooth vertical growth of the c60 aggregates. the polylayers exhibit a variety of morphological features, both aggregated species and structural defects, whose evolution is discussed in terms of the vertical and lateral phase separation.

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