学术报告

题目：Carbon Nanomembranes Engineered from Molecular Monolayers

报告人：艾敏（Min Ai）博士

Physics of Supramolecular Systems of Surfaces, Bielefeld University, 33501 Bielefeld, Germany

时间：2013年1月8日（星期二）上午10：00

地点：化学馆239

Abstract：

Polymeric ultra-thin films are promising candidates to be used as components in miniaturized electronic, medical or energy devices. In this contribution, we report the fabrication of ultra-thin (~1 or 3 nm) carbon nanomembranes (CNMs). Organic biphenyl or nitro-biphenyl thiol moieties were formed in a self-assembled monolayer (SAM) on an Au (111) surface. The SAM was irradiated by electrons, leading to a two-dimensional cross-linked CNM through dehydrogenation and recombination mechanisms. After cross-linking, CNMs with an area of 1.2 cm² were detached from the gold surface and exhibited a free-standing ultra-thin film with a thickness of about 1 nm (length of the biphenyl molecule). Properties of CNM materials are analyzed, including thermal stability, electrical properties, optical properties, mechanical strength, chemical tunability, biocompatibility and various gas transport properties, such as hydrogen, helium, carbon dioxide, oxygen, nitrogen, argon, methane.

报告人艾敏博士简介：

10.2009 – 至今 博士后和课题带头人， 德国比勒菲尔德大学物理系超大分子系统和表面科学

导师：Prof. Dr. Armin Gölzhäuser

课题：合成，改性，表征纳米薄膜和石墨烯以及对其的应用。

03.2004 – 09.2009 博士，德国洪堡大学物理系高分子物理专业

导师：Prof. Dr. Jürgen. P. Rabe

课题：用扫描力学和隧道显微镜对单分子膜和多层分子膜研究