کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
594986 | 1453995 | 2011 | 9 صفحه PDF | دانلود رایگان |
The paper reports on binary composites prepared from fullerene C60 and π-rich cobalt tetrakis(4-amino-5-phenoxy)phthalocyanine (CoPc) being a mixture of four geometrical isomers. Co-aggregation has been conducted under aqueous and non-aqueous conditions by the Langmuir–Blodgett (LB) technique and drop-casting from o-xylene, respectively. The prepared LB composites are badly disordered whereas the cast ones are predominantly structured: depending on the C60/CoPc ratio, the wire-, worm-, or bead-like particles are observed. Optical spectroscopy is used to reveal the aggregation state of fullerene in the composites. The nano-scale heterogeneities resulting from homomolecular aggregation of fullerene are revealed only in the former case. Smooth co-aggregation under non-aqueous conditions is attributed to intermediate formation of the ternary C60–CoPc–xylene solvates. Formation of the well-shaped composite particles seems to be an optional post-aggregation process being favored by the molecular symmetry of the CoPc isomers.
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► A π-donor phthalocyanine with the molecular affinity for fullerene is revealed.
► The fullerene–phthalocyanine interaction can be a structure-forming factor in the solid state.
► An aromatic solvent promotes formation of the fullerene–phthalocyanine heterostructures.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 377, Issues 1–3, 5 March 2011, Pages 393–401