News

Transformers in The Porous Materials Field: Extremely Fast Lattice Rearrangement of the MOF Structures

In this work, we present a case system that can achieve rapid structural rearrangement of the whole lattice of a metal–organic framework (MOF) through a ‘domino’ alteration of the bond connectivity under mild conditions. Topological transitions between significantly different phases typically require extreme conditions to collectively break chemical bonds and overcome the stress caused to the original structure by altering its correlated bond environment. Our system transforms from a disordered and less crystalline MOF with low porosity to a highly crystalline and porous isomer within few minutes upon activation (solvent exchange and desorption), resulting in a significant increase in surface area, from 725 to 2,749 m2/g. Spectroscopic measurements show that this counter-intuitive lattice rearrangement involves a metastable intermediate with defect frameworks that results from solvent removal on coordinately unsaturated metal sites. This less crystalline–crystalline switch between two topological distinct MOFs is shown to be reversible over four cycles through activation and re-immersion in polar solvents. The aim of this study was to investigate the partial defects in real MOF crystalline structures and to focus on defect-induced MOF properties, which are expected to enhance and develop the physical, mechanical, electronic and optical material properties and chemical activities of MOF materials. This research adopted an exploratory experimental procedure that facilitated the synthesis of highly porous MOFs, which were previously not easy to synthesize, and functional applications for defective and highly porous MOFs were further developed.

COVID-19 Campus Access Control Protocol (Sept. 10 - Oct. 12)

Campus entry access control will be enforced from 08:00 to 18:00 on working days: Real-name system is in place. You are only allowed to enter if you have a Day Pass, scan QR code at the gates, present an NTU System School ID or a proof of business visit and pass the temperature check.

COVID Prevention Measures for 2021-2022 Academic Year (Sept 9, 2021)

Per Official Document No. 1100121132 of the Department of Higher Education (MOE) dated Sept. 7, 2021 announcing the Guidelines for the Management of COVID-19 in the 2021-2022 Academic Year of Colleges and Universities, the school is taking the following prevention measures.

The NTNU CIR Lab : Moving Robots from Self-Moving to Self-Learning

The wave of artificial intelligence (AI) technologies has brought new elements to robotics. The National Taiwan Normal University Computational Intelligence and Robotics (NTNU CIR) Lab is using advanced AI design and application frameworks to move robots from merely automatic, to new horizons in self-learning.

Double Major Available in NTU System Starting in 2021

Since NTU System established in 2014, the interaction of teacher and students between the three universities has risen. Since 2017, students are allowed to enroll for intercollegiate programs in NTU System. Since 2019, students are allowed to take minors in NTU System. The students shown positive feedback and the spots for each departments raised every year. Since 2021, double majors at NTU and NTNU became available to students. The number has shown significant increase, from 2,535 in 2015 to 7,481 in 2020. Over the past 6 years, 33,279 participants have attended course from a different university.