活动简介：

报告人简介：王晓松，加拿大滑铁卢大学纳米技术研究院教授，大连理工大学海天学者。从事高分子材料、纳米科学、力学等交叉学科研究，已经在 Science, Nature, J. Am. Chem. Soc. , Angew. Chem. Int. Ed., Macmolecules等国际顶级期刊发表论文140余篇。代表性14 篇（单篇引用>100次）SCI他引5314次，单篇最高660次，H-index 36。

报告摘要：

Polymer and supramolecular chemistries for functional materials and nanotechnology are benefited from harnessing well-developed organometallic chemistry. By researching into CpFe(CO)₂ (Fp) chemistry, we developed a new polymerization technique, migration insertion polymerization (MIP), and explored bulk and solution assembly of metal carbonyl molecules.

A number of main-chain metal carbonyl polymers were prepared by MIP. The Fp repeating units have stool chair coordination geometry, so the corresponding polymers adopt various chain conformation depending on the monomer used for the polymerization. The influence of the conformation on polymer properties is interesting to be explored.

Supramolecular polymers assembled from CpFe(CO)CO(CH₂)₅CH₃PPh₃ (FpC₆) molecules will also be discussed. Although this supramolecular polymer only contains weak interactions, e.g. C—H---O and π—π stacking, The pheny and Cp rings in FpC₆ have a high tendency to interact forming various multiple aryl embracing chains. The volume of these embracing chains is large and can be stabilized by the C—H---O bonds within the chains, which hold the chain integration even at a high temperature up to 130 ^oC. The supramolecular polymers with the weak intermolecular interactions exert interesting dynamic mechanical properties and potentially useful as functional materials.

In addition, we also discovered that hydrophobic metal carbonyl molecules are able to assemble in water, offering an ideal platform to investigate hydrophobic effect. The role of this effect will be discussed based on the assembling behaviour of metal carbonyl molecules.