It is very crucial to have a very simple, instant and low-cost detection and estimation of a trace of water in common organic solvents including alcohols. To obtain the sensor material we have synthesized a metal-organic framework (MOF) {[Y_1.0Mn_1.5(PDA)₃(H₂O)₃]·3.5H₂O}, 1, (PDA = 2,6-pyridinedicarboxylic acid) through hydrothermal process. A doping of compound 1 by 10 % terbium {[Y_0.9Tb_0.1Mn_1.5(PDA)₃(H₂O)₃]·3.5H₂O}, 1:Tb, was done through an isomorphous substitution technique. The most advantageous point about 1:Tb was the metal centre luminescence, which was largely stokes shifted from the excitation light making possible the naked eye observation. The weak metal centre luminescence intensity of dehydrated 1:Tb (excluding lattice and coordinated water molecules) in organic solvents EtOH, CH₃OH, CH₃CN, THF and n-heptane showed huge turn-on in presence of trace amounts of H₂O in the said solvents. The luminescence intensity of Tb³⁺ centre was enhanced by several folds with a limit of detection 1.12 %(v/v), 0.47 %(v/v), 0.04 %(v/v), 0.13 %(v/v) and 0.53 %(v/v) respectively. The coordinated water molecules as well as the lattice water molecules in 1:Tb play a vital role during sensitization of the Tb³⁺ centre by enhancing the rigidity of the structure and facilitating the formation of LMCT state which ultimately results in a huge turn-on of metal centre luminescence.

对包括酒精在内的普通有机溶剂中的痕量水进行非常简单，即时和低成本的检测和估算，这一点至关重要。为了获得传感器材料，我们合成了金属有机骨架（MOF）{[Y _1.0 Mn _1.5（PDA）₃（H ₂ O）₃ ]·3.5H ₂ O}，1（（PDA = 2,6-吡啶二羧酸酸）通过水热过程。用10％{{[Y _0.9 Tb _0.1 Mn _1.5（PDA）₃（H ₂ O）₃ ]·3.5H ₂ O}，1：Tb掺杂化合物1，是通过同构取代技术完成的。大约1：Tb的最有利点是金属中心发光，它与激发光的斯托克斯偏移很大，因此可以用肉眼观察。脱水的弱金属中心的发光强度1：TB（不含晶格和配位水分子）在有机溶剂中的EtOH，CH ₃ OH，CH ₃ CN，THF和正庚烷表明巨大的接通中的h的痕量存在₂在上述溶剂中为O。Tb ³⁺的发光强度中心增强了几倍，检出限为1.12％（v / v），0.47％（v / v），0.04％（v / v），0.13％（v / v）和0.53％（v / v）分别。1：Tb中的配位水分子和晶格水分子在Tb ³⁺中心敏化过程中起着至关重要的作用，它增强了结构的刚性并促进了LMCT状态的形成，最终导致了巨大的开启金属中心发光。