Flexibility and stacking in linear and cyclic polymers on a gold surface

来源 :International Conference on Nanoscience & Technology,China 2 | 被引量 : 0次 | 上传用户：Jul-83

【摘要】

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【作者】

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L.M.A.Perdigao P.H.Beton S.A.Svatek M.B.Wieland A.Saywell.M.O.Blunt A.Stannard J.O'Shea J.K.Sprafke D.Kondratuk H.L.Anderson

【机构】

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School of Physics & Astronomy,University of Nottingham,Nottingham,NG7 2RD,UK

【出处】

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International Conference on Nanoscience & Technology,China 2

【发表日期】

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2013年3期

【关键词】

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Supramolecular assembly surfaces electrospray porphyrins polymers

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　　The properties of porphyrin oligomers, polymers and nanorings[1-3] deposited using electrospray on Au(111) has been investigated using scanning tunneling microscopy (STM) and angle-resolved NEXAFS (near edge X-ray absorption fine structure spectroscopy).Oligomers and linear polymers pack with chains in a parallel alignment.For oligomers this leads to a regular periodic arrangement,but the polymers are highly flexible and show hairpin bends.NEXAFS studies indicate that the porphyrin macrocycle is adsorbed parallel to the surface and from our STM images it is possible to define a 2D correlation length characterizing the bending of the polymers.

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Flexibility and stacking in linear and cyclic polymers on a gold surface

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