A new tripodal carboxylic ligand, 2-(4-carboxylphenoxy) terephthalic acid (H₃L2), readily reacts with Zn(II) salt in the presence of 4,4′-bipyridine (4,4′-bipy) to afford a new metal-organic framework of {Zn₃(L2)₂(μ₂-H₂O)(4,4′-bipy)}_n (1). 1 shows 3D two-fold interpenetrating network with (3,8)-connected tfz-d topology. 1 exhibits impressive pH stability and strong luminescence, making it an excellent candidate as a fluorescent chemical sensor. It is extremely responsive to toxic heavy metal ion (Hg²⁺) and TNT explosive. Importantly, 1 as the luminescent probe of Hg²⁺ can be simply and quickly regenerated, which represents a rare example in reported luminescent sensors of Hg²⁺. Furthermore, the photocatalytic property of 1 for degradation of the Rhodamine B (RhB) has been examined.

新的三脚架羧基配体2-（4-羧基苯氧基）对苯二甲酸（H ₃ L2）在4,4'-联吡啶（4,4'-bipy）存在下易于与Zn（II）盐反应生成新{锌的金属-有机骨架₃（L2）₂（μ ₂ -H ₂ O）（4,4'-联吡啶）} _ñ（1）。图1显示了具有（3,8）连接的tfz-d拓扑的3D双向互穿网络。1表现出令人印象深刻的pH稳定性和强发光性，使其成为荧光化学传感器的极佳候选者。对有毒重金属离子（Hg ²⁺）和TNT炸药。重要的是，作为Hg ²⁺的发光探针的1可以简单，快速地再生，这在报道的Hg ²⁺发光传感器中是一个罕见的例子。此外，已经研究了1对若丹明B（RhB）的降解的光催化性能。