An unusual protocol for a “one-pot” three-step reaction to build a 2,4,9-triazaadamantane skeleton from triallylcarbinol was developed.

Nitrogen-rich heterocyclic compounds (NRHCs) are an emerging type of explosive, and their quantification is important in national security inspection and environmental monitoring. Up until now, designing an efficient NRHCs sensing strategy was still in the early stages. Herein, a new metal–organic framework (MOF) with aggregation-induced emission (AIE) characteristics is synthesized with fluorometric/colorimetric responses for rapid and selective detection of NRHCs. The nonemissive probe is designed with tetraphenylethylene derivative as the linker and Co as the node, quencher, and color-changing agent. Cobalt AIE-MOF exhibits a turn-on emission enhancement due to the competitive coordination substitution between NRHCs and the scaffold as well as the following AIE process of the liberative linkers. Meanwhile, the color appearance of the probe changes from blue to yellow based on the dissociation of the original Co coordinating system. Using this dual-mode probe, single- and dual-ring NRHCs are successfully detected from 5 μM to 7.5 mM within 25 s. The cobalt AIE-MOF exhibits excellent selectivity of NRHCs against a variety of interferences, providing a promising tool for designing a multichannel detection strategy.

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A novel high-performance energetic compound of the polynitroazaadamantane family, 2,4,4,6,8,8-hexanitro-2,6-diazaadamantane, was designed and synthesized from 1,5-cyclooctadiene by two routes. Based on the experimental and calculated results, it exhibits a surprisingly high density (1.959 g cm −3 ), high thermal stability (onset decomposition temperature of 235 °C), high positive heat of formation, and excellent detonation properties. These fascinating properties, which are comparable to those of CL-20, show great promise for potential applications as a high-energy density material.

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Polynitroazaadamantanes have a broad application prospect in the field of energetic materials. Herein, the synthesis of 2,4,4,8,8‐pentanitro‐2‐azaadamantane, a new member of the polynitroazaadamantane family, is described in detail. It was prepared through eleven steps in an overall yield of 8.8 %, starting from easily accessible compounds. It shows high thermal stability, an onset decomposition at 254 °C and high density (1.813 g·cm–3).

The tetrazole-based carboxylic acids can be used as difunctionalized ligands for the preparation of functional MOFs with novel topologies. Herein we chose two tetrazole-based carboxylic acids, 1,3-bis(2-carboxymethyltetrazol-5-yl)benzene (H2L1) and 2-(5-(3-pyridyl)tetrazol-2-yl)propionic...

2,4,6,8-Tetrazaadamantane skeleton is a novel rigid symmetric cage-like organic structure and the construction of this kind of scaffold is a long-standing challenge. In this article, an unusual protocol of a...