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A novel three-dimensional microporous terbium-(III) metal−organic framework (Tb-MOF) named as [Tb 10 (DBA) 6 (OH) 4 (H 2 O) 5 ]•(H 3 O) 4 (1), was successfully obtained by a solvothermal method based on terbium nitrate and 5-di(2′,4′dicarboxylphenyl) benzoic acid (H 5 DBA). The Tb-MOF has been characterized by single crystal X-ray diffraction, elemental analysis, thermogravimetry, and fluorescence properties, and the purity was further confirmed by powder X-ray diffraction (PXRD) analysis. Structural analysis shows that there are two kinds of metal cluster species: binuclear and tetranuclear, which are linked by H 5 DBA ligands in two μ 7 high coordination fashions into a threedimensional microporous framework. Fluorescence studies show that the Tb-MOF can detect H 2 O 2 , Fe 3+ , and Cr 2 O 7 2− with high sensitivity and selectivity and can also be used for electrochemical detection of exposed 2,4,6-trinitrophenylamine (TPA) in water. The highly selective and sensitive detection ability of the Tb-MOF might make it a potential multifunctional sensor in the future.

Abstract-To design an effective secure routing of trusted nodes in wireless sensor networks, quantum ant colony algorithm is applied to the design of large-scale wireless sensor network routing. The trustworthy network is used as the pheromone distribution strategy. Then, the pheromone is encoded by the quantum bit. The pheromone is updated by the quantum revolving door, and the energy consumption prediction is carried out to select the path. Finally, the trusted security routing algorithm of the wireless sensor network based on the global energy balance is realized. The quantum ant colony algorithm is superior to the traditional ant colony algorithm in algorithm convergence speed and global optimization. It can balance the energy consumption of the network node and can effectively resist the attacks such as Wormholes. It is very promising to apply the quantum ant colony algorithm to the routing algorithm of large scale wireless sensor networks.Keywords-wireless sensor network, quantum ant colony algorithm, safe and reliable, routing algorithm IntroductionBecause many nodes in wireless sensor networks are distributed densely, messages often reach multi-hop relay nodes. Each node is a potential routing node, which has no fixed infrastructure and is more vulnerable to attacks. The nodes are assumed to be friendly nodes and lack the necessary trust mechanism, and are vulnerable to attacks such as fake nodes. As the wireless sensor network node and network characteristics and energy consumption constraints, leading to wireless sensor network security threats are different from traditional computer networks [1]. We believe that the design principles of WSN (wireless sensor networks) security routing algorithm are as follows: (1) to maintain the global energy load balance of the whole network; (2) to have certain fault tolerance and network self-healing function; (3) application is data centric, routing protocols will continue to be data-based, location-based; (4) it should have a credible security.