A composite of Keggin-type phosphotungstic acid (H3PW12O40) encapsulated in sized-matched metal–organic framework UiO-67 (PW12@UiO-67) was prepared as a heterogeneous catalyst for extractive and catalytic oxidative desulfurization systems (ECODS).

Chiroptical activity is observed from an achiral adenine-containing metal-organic framework (MOF) named ZnFDCA. Such a seemingly counterintuitive phenomenon can, in fact, be predicted by the intrinsic crystal symmetry of 4̅2 m point group. Although theoretically allowed, examples of optically active achiral crystals are extremely rare. ZnFDCA is the first reported achiral MOF showing optical activity, as demonstrated by a pair of circular dichroism signals with opposite signs and enhanced intensity. Moreover, simply through adding an amino substituent to adenine, the chiroptical activity, as well as nonlinear optical activity, of the analogous MOF, namely ZnFDCA-NH, disappears due to diverse packing pattern giving rise to centrosymmetric crystal symmetry.

In contrast to the regular postsynthetic modification (PSM) approach which is global and random in principle, a diffusion-controlled PSM strategy utilizing size mismatch between pores and reactants has been developed to target selective functionalization and fine-tuning of material performance.

Shape complementarity is a biological craft for precisely binding substrates at protein–protein interfaces. An analogy to such a function can be drawn conceptually for crystalline porous solids; yet the manifested entities are rare in reticular chemistry. The bottleneck‐shaped pores carved out of a metal‐organic framework, Zn(MIBA)2 (aka. MAF‐stu‐13), can perfectly accommodate benzene molecules. Remarkably, its framework adapts to the optimal guest binding‐the enhanced host–guest interactions in the neck in turn minimize the guest‐guest repulsion in the pore to the extent it turns into attraction‐as demonstrated by the combined X‐ray structural and DFT computational studies. This adaptive material can be used for liquid‐phase production of ultrahigh‐purity (≥99 %) cyclohexane, achieving a balance between uptake capacity and separation selectivity and surpassing the performances of other porous and nonporous crystals reported recently (e.g. product purity 99.4 % vs. 97.5 % to date).

A CuI-based MOF with a tetraphenylethene moiety for turn-on detection of ammonia and monitoring of solvent viscosity is implemented via a divided receptor–transducer protocol.

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Edge-transitive and related minimal transitivity nets play a central role in the designed synthesis of crystalline framework materials (reticular chemistry), in particular, metal−organic frameworks (MOFs). We report a new family of thirteen edge-transitive nets that have previously gone unidentified theoretically and their associated minimal transitivity nets. Their relevance to existed materials is noted, uncovering new nets with minimal transitivity 3 2 (three kinds of nodes and two kinds of edges), mostly never known or observed in real crystals, for future design.

In recent years, finger vein recognition has become an important sub-field in biometrics and been applied to realworld applications. The development of finger vein recognition algorithms heavily depends on large-scale real-world data sets. In order to motivate research on finger vein recognition, we released the largest finger vein data set up to now and hold finger vein recognition competitions based on our data set every year. In 2017, International Competition on Finger Vein Recognition (ICFVR) is held jointly with IJCB 2017. 11 teams registered and 10 of them joined the final evaluation. The winner of this year dramatically improved the EER from 2.64% to 0.483% compared to the winner of last year. In this paper, we introduce the process and results of ICFVR 2017 and give insights on development of state-of-art finger vein recognition algorithms.