We report a robust pillar-layered metal-organic framework, Zn-tfbdc-dabco (tfbdc: tetrafluoroterephthalate, dabco: 1, 4-diazabicyclo[2.2.2]octane), featuring the fluorinated pore environment, for the preferential binding of propane over propylene and thus highly inverse selective separation of propane/propylene mixture. The inverse propane-selective performance of Zn-tfbdc-dabco for the propane/propylene separation was validated by single-component gas adsorption isotherms, isosteric enthalpy of adsorption calculations, ideal adsorbed solution theory calculations, along with the breakthrough experiment. The customized fluorinated networks served as a propane-trap to form more interactions with the exposed hydrogen atoms of propane, as unveiled by the simulation studies at the molecular level. With the advantage of inverse propane-selective adsorption behavior, high adsorption capacity, good cycling stability, and low isosteric enthalpy of adsorption, Zn-tfbdc-dabco can be a promising candidate adsorbent for the challenging propane/propylene separation to realize one-step purification of the target propylene substance.

在综合介绍哈佛大学普通化学课程设置的基础上，重点介绍詹姆斯∙G.安德森(James G. Anderson)教授的教材《大学化学——基于全球视野与分子角度的前沿和基础》在物质科学11 (简称PS 11)课程中十多年来的应用情况。哈佛普通化学课程结构独特，设计理念在于为化学和生物学基础不同的新生设计多样的课程选择。PS 11是一门将化学基本原理与全球气候变化和能源等重大议题相结合的普通化学课程，通过现实案例优化学生对化学概念的学习，该课程核心内容设置以背景驱动、案例分析为特色。这种有针对性的情境教学不仅能够激发学生学习动力，深化其对知识的理解，还能帮助学生将化学知识广泛应用于科学领域和社会问题的解决中。