当前位置:
X-MOL 学术
›
Cryst. Growth Des.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Isostructural Lanthanide Coordination Polymers with High Photoluminescent Quantum Yields by Effective Ligand Combination: Crystal Structures, Photophysical Characterizations, Biologically Relevant Molecular Sensing, and Anti-Counterfeiting Ink Application
Crystal Growth & Design ( IF 3.8 ) Pub Date : 2020-11-12 , DOI: 10.1021/acs.cgd.0c00544 Han-Wen Yang 1 , Ping Xu 1 , Bo Ding 1 , Xiu-Guang Wang 1 , Zheng-Yu Liu 1 , Hong-Kun Zhao 1 , Xiao-Jun Zhao 1, 2 , En-Cui Yang 1
Crystal Growth & Design ( IF 3.8 ) Pub Date : 2020-11-12 , DOI: 10.1021/acs.cgd.0c00544 Han-Wen Yang 1 , Ping Xu 1 , Bo Ding 1 , Xiu-Guang Wang 1 , Zheng-Yu Liu 1 , Hong-Kun Zhao 1 , Xiao-Jun Zhao 1, 2 , En-Cui Yang 1
Affiliation
Characteristically strong photoluminescence with high quantum yield and long emission lifetime plays vital roles for the sensing performance of functional lanthanide complexes. To enhance the energy transfer efficiency through the ligand-field effect, three lanthanide-based coordination polymers formulated as {[Ln(H2O)(TPA)(ox)]·0.5H2O}n (Ln-CPs, Ln = Eu, Tb, and Gd) were solvothermally synthesized via employing 6-(1H-1,2,4-triazol-1-yl)pyridine-2-carboxylate (TPA) and oxalate (ox) as antenna and bridging ligands. These obtained Ln-CPs were structurally and photophysically characterized, and the sensing capacity and feasible application of two luminescent Ln-CPs were further investigated. The three Ln-CPs are crystallographically isostructural, exhibiting (4 4) layers assembled from centrosymmetric {Ln2(TPA)2} dimers and pairs of ditopic ox2– linkages. Resulting from the conjugated TPA– chromophore and distorted LnIII coordination configuration, highly effective energy migration from the longer-lived triplet state of TPA– to LnIII is observed, endowing Eu-CP and Tb-CP to display bright red and green luminescence with an unexceptionable emission quantum yield up to 89% and 71%. Furthermore, the Tb-CP shows fast and effective responses toward the biomarkers of carcinoid cells with a strong Stern–Volmer quenching constant (KSV) and low detection limit (LOD) of 8.95 × 103 M–1 and 0.72 μM for 5-hydroxy tryptamine as well as 1.18 × 104 M–1 and 0.95 μM for 5-hydroxy-3-indoleacetic acid. Instead, the red-emitting Eu-CP can differentiate quercetin effectively with KSV = 1.82 × 104 M–1 and LOD = 0.58 μM. Furthermore, luminescent ink with strong anti-counterfeiting ability and long-term stability is developed, representing the promising practice of Ln-CPs as functional materials.
中文翻译:
有效配体结合可实现高光致发光量子产率的同构镧系配位聚合物:晶体结构,光物理特性,生物学相关的分子传感和防伪油墨的应用
具有高量子产率和长发射寿命的特征性强光致发光对于功能性镧系元素络合物的传感性能起着至关重要的作用。为了通过配体场效应提高能量转移效率,将三种基于镧系元素的配位聚合物配制成{[Ln(H 2 O)(TPA)(ox)]·0.5H 2 O} n(Ln-CPs,Ln = Eu,Tb和Gd)是通过使用6-(1 H -1,2,4-三唑-1-基)吡啶-2-羧酸盐(TPA)和草酸盐(ox)作为触媒和桥联配体来溶剂热合成的。这些获得的Ln-CP进行了结构和光物理性质的表征,并进一步研究了两种发光Ln-CP的传感能力和可行的应用。这三个Ln-CP在晶体学上是同构的,表现出(4 4)个层是由中心对称{Ln 2(TPA)2 }二聚体和对位ox 2–键对组装而成。由于共轭TPA –生色团和扭曲的Ln III配位结构,观察到高效的能量从TPA –的更长寿命的三重态迁移到Ln III,从而赋予了Eu-CP和Tb-CP可以显示明亮的红色和绿色发光,并且具有无与伦比的发射量子产率,分别高达89%和71%。此外,Tb-CP对类癌细胞的生物标记物显示出快速有效的反应,具有强的斯特恩-沃尔默淬灭常数(K SV)和低检测限(LOD),分别为5.95×10 3 M –1和0.72μM羟基色胺,以及5-羟基-3-吲哚乙酸的1.18×10 4 M –1和0.95μM。相反,发红色光的Eu-CP可以有效区分槲皮素,K SV = 1.82×10 4 M –1LOD = 0.58μM。此外,开发了具有强大的防伪能力和长期稳定性的发光油墨,代表了Ln-CPs作为功能材料的有前途的实践。
更新日期:2020-12-02
中文翻译:
有效配体结合可实现高光致发光量子产率的同构镧系配位聚合物:晶体结构,光物理特性,生物学相关的分子传感和防伪油墨的应用
具有高量子产率和长发射寿命的特征性强光致发光对于功能性镧系元素络合物的传感性能起着至关重要的作用。为了通过配体场效应提高能量转移效率,将三种基于镧系元素的配位聚合物配制成{[Ln(H 2 O)(TPA)(ox)]·0.5H 2 O} n(Ln-CPs,Ln = Eu,Tb和Gd)是通过使用6-(1 H -1,2,4-三唑-1-基)吡啶-2-羧酸盐(TPA)和草酸盐(ox)作为触媒和桥联配体来溶剂热合成的。这些获得的Ln-CP进行了结构和光物理性质的表征,并进一步研究了两种发光Ln-CP的传感能力和可行的应用。这三个Ln-CP在晶体学上是同构的,表现出(4 4)个层是由中心对称{Ln 2(TPA)2 }二聚体和对位ox 2–键对组装而成。由于共轭TPA –生色团和扭曲的Ln III配位结构,观察到高效的能量从TPA –的更长寿命的三重态迁移到Ln III,从而赋予了Eu-CP和Tb-CP可以显示明亮的红色和绿色发光,并且具有无与伦比的发射量子产率,分别高达89%和71%。此外,Tb-CP对类癌细胞的生物标记物显示出快速有效的反应,具有强的斯特恩-沃尔默淬灭常数(K SV)和低检测限(LOD),分别为5.95×10 3 M –1和0.72μM羟基色胺,以及5-羟基-3-吲哚乙酸的1.18×10 4 M –1和0.95μM。相反,发红色光的Eu-CP可以有效区分槲皮素,K SV = 1.82×10 4 M –1LOD = 0.58μM。此外,开发了具有强大的防伪能力和长期稳定性的发光油墨,代表了Ln-CPs作为功能材料的有前途的实践。