Typical amphiphilic metal-free tetrakis(4-hydroxyphenyl)porphyrin H2THPP (1) and tetrakis(4-hydroxyphenyl)porphyrinato copper complex CuTHPP (2) were fabricated into organic nanostructures by a phase-transfer method. Their self-assembly properties in aqueous solution have been comparatively studied with those of tetra(phenyl)porphyrin H2TPP (3) by electronic absorption and Fourier transform infrared (FT-IR) spectroscopy, transmission electronic microscopy (TEM), scanning electronic microscopy (SEM), and X-ray diffraction (XRD) techniques. Experimental results reveal different molecular packing models in these aggregates, which in turn result in self-assembled nanostructures with different morphologies from nano-scale hollow spheres for 1, nanoribbons for 2, to nanobelts for 3. The present study, representing part of our continuous efforts towards understanding the relationship between synergistic interplay among noncovalent interactions such as the ÏâÏ interaction, metalâligand coordination bonding, and hydrogen bonding in controlling and tuning the morphology of self-assembled nanostructures of tetrapyrrole derivatives, will provide information helpful for preparing self-assembled nanostructures with controlled molecular packing conformations and morphologies through molecular modification.
通过相转移法将典型的两亲无
金属四(
4-羟基苯基)
卟啉 H2THPP (1) 和四(
4-羟基苯基)
卟啉铜络合物 CuTHPP (2) 制成了有机纳米结构。通过电子吸收和傅立叶变换红外光谱(FT-IR)、透射电子显微镜(
TEM)、扫描电子显微镜(
SEM)和 X 射线衍射(XRD)技术,对它们与四(苯基)
卟啉 H2
TPP(3)在
水溶液中的自组装特性进行了比较研究。实验结果表明,这些聚合体中存在不同的分子堆积模型,进而形成了具有不同形态的自组装纳米结构,从纳米级空心球(1)、纳米带(2)到纳米棒(3)。本研究是我们为了解ÏâÏ相互作用、
金属配位键和氢键等非共价相互作用在控制和调整四
吡咯衍
生物自组装纳米结构的形态方面的协同作用关系所做的持续努力的一部分,它将为通过分子修饰制备具有可控分子堆积构象和形态的自组装纳米结构提供有用的信息。