Iridium(III) complexes with near-infrared (NIR) emission are still less well developed. In this work, two new NIR emissive mono- and dinuclear iridium complexes were designed and synthesized via introducing the tetraphenlyethene Schiff base ligands. Interestingly, both complexes display mechanochromic luminescent (MCL) behavior, and the MCL mechanism can be attributed to the atypical physical phase transformations from amorphization to crystallization.

中文翻译：

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近红外发射光致变色发光活性单/核铱（III）配合物的合成，表征

具有近红外（NIR）发射的铱（III）配合物仍不太发达。在这项工作中，通过引入四苯乙烯席夫碱配体，设计并合成了两种新的近红外发射单核和双核铱配合物。有趣的是，两种配合物均显示出机械致变色发光（MCL）行为，并且MCL机制可归因于从非晶化到结晶的非典型物理相变。