Halogen-Bonds-Based Strategy for the Design of Highly Luminescent Lanthanide Coordination Polymers as Taggants for Plastic Waste Sorting.

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Pub Date : 2024-07-02 DOI:10.1021/acs.inorgchem.4c01866

Fallou Ngom, Aurélien Chang, Chloé Blais, Carole Daiguebonne, Yan Suffren, Magatte Camara, Guillaume Calvez, Kevin Bernot, Olivier Guillou

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Abstract

Reactions in water between a lanthanide ion and 3,4,5,6-tetrachloro-phthalate lead to a new series of iso-structural coordination polymers with general chemical formula [Ln₂(tcpa)₃(H₂O)₆]_∞ with Ln = Eu-Yb plus Y. The crystal structure has been solved on the Y-derivative. This compound crystallizes in the monoclinic system, space group P2₁/n (no. 14) with the following cell parameters: a = 6.2155(2) Å, b = 19.6652(7) Å, c = 30.3720(9) Å, β = 94.631(1)°, V = 3700.22(37) Å³, and Z = 4. Luminescence properties of homo- and heterolanthanide coordination polymers that belong to this structural family have been studied in detail. This study shows that, in this system, intermetallic energy transfers are very efficient and that dilution by an optically non active Gd³⁺ ion leads to quite efficient luminescent heterolanthanide coordination polymers. The luminescence of these compounds, dispersed at a low doping rate in a poly(methyl methacrylate) (PMMA) matrix, can be observed even with the naked eye. This study opens the way to the use of such compounds as taggants for optical sorting of plastic waste and consecutive recycling.

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基于卤素键的高发光镧系配位聚合物设计策略，作为塑料垃圾分类的标记物。

镧系元素离子与 3,4,5,6- 四氯邻苯二甲酸盐在水中发生反应，产生了一系列新的等结构配位聚合物，其化学通式为 [Ln2(tcpa)3(H2O)6]∞，其中 Ln = Eu-Yb 加 Y。其晶体结构已通过 Y 衍生物求解出来。该化合物在单斜晶系中结晶，空间群为 P21/n（14 号），晶胞参数如下：a = 6.2155(2)埃，b = 19.6652(7)埃，c = 30.3720(9)埃，β = 94.631(1)°，V = 3700.22(37)埃3，Z = 4。我们详细研究了属于这一结构系列的同源和异源配位聚合物的发光特性。研究结果表明，在这一体系中，金属间的能量转移非常有效，而且通过光学非活性 Gd3+ 离子的稀释，异咯烷配位聚合物的发光效率相当高。这些化合物以较低的掺杂率分散在聚（甲基丙烯酸甲酯）（PMMA）基质中，甚至可以用肉眼观察到它们的发光。这项研究为使用此类化合物作为标记物对塑料垃圾进行光学分类和连续回收开辟了道路。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.