Triboluminescence of a new family of CuI–NHC complexes in crystalline solid and in amorphous polymer films,Chemical Science

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Triboluminescence of a new family of CuI–NHC complexes in crystalline solid and in amorphous polymer films
Chemical Science ( IF 7.6 ) Pub Date : 2020-09-21 , DOI: 10.1039/d0sc04442c
Ayumu Karimata _{1,

2,

3,

4} , Pradnya H. Patil _{1,

2,

3,

4} , Robert R. Fayzullin _{5,

6,

7,

8,

9} , Eugene Khaskin _{1,

2,

3,

4} , Sébastien Lapointe _{1,

2,

3,

4} , Julia R. Khusnutdinova _{1,

2,

3,

4}

Affiliation

Triboluminescent compounds that generate emission of light in response to mechanical stimulus are promising targets in the development of “smart materials” and damage sensors. Among triboluminescent metal complexes, rare-earth europium and terbium complexes are most widely used, while there is no systematic data on more readily available and inexpensive Cu complexes. We report a new family of photoluminescent Cu–NHC complexes that show bright triboluminescence (TL) in the crystal state visible in ambient indoor light under air. Moreover, when these complexes are blended into amorphous polymer films even at small concentrations, TL is easily observed. Observation of TL in polymer films overcomes the limitation of using crystals and opens up possibilities for the development of mechanoresponsive coatings and materials based on inexpensive metals such as Cu. Our results may also have implications for the understanding of the TL effect's origin in polymer films.

中文翻译：

结晶固体和非晶态聚合物薄膜中新的CuI–NHC配合物家族的三荧光发光

响应机械刺激而产生光发射的摩擦发光化合物是“智能材料”和损伤传感器开发的有希望的目标。在摩擦发光的金属络合物中，最广泛使用的是稀土euro和ter络合物，而没有关于更容易获得和更便宜的铜络合物的系统数据。我们报告了一个新的光致发光铜-NHC络合物家族，它们在空气中室内环境光下可见的晶体状态下显示出明亮的三级发光（TL）。此外，当即使在低浓度下将这些络合物掺混到非晶态聚合物膜中时，也容易观察到TL。观察聚合物薄膜中的TL克服了使用晶体的局限性，并为开发基于廉价金属（如Cu）的机械响应性涂层和材料开辟了可能性。我们的结果也可能对理解聚合物薄膜中TL效应的起源有影响。

更新日期：2020-10-14

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