在室温下,双 (III) (d7-d7) 复合物的前所未有的近红外 (NIR) 辐射
Martin A Bennett1, Suresh K Bhargava, Eddie Chung-Chin Cheng
1Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia.
Journal of the American Chemical Society
|May 4, 2010
概括
这项研究报告了新的 (III) 复合物作为高效的近红外 (NIR) 发射器. 这些新的二二 (III) 复合体表现出可调节的发射能量,为先进的光学应用提供了潜力.
科学领域:
- 无机化学 无机化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 复合物以其独特的光物理特性和在发光中的潜在应用而闻名.
- 在金属复合体中调节排放能量对于开发先进光学材料至关重要.
- 二二 (III) 复合物是发光应用的有前途的化合物类别.
研究的目的:
- 合成和描述第一个基于二二三复合物的高效近红外 (NIR) 发射器家族.
- 通过不同的轴联体 (化物和化物) 来研究这些复合物的可调节的发射能量.
- 探索二甲 (II) 前体和二甲 (III) 发射器的结构和光物理特性.
主要方法:
- 合成具有不同R组 (Me,CHMe) 和轴联体 (Cl,Br,I,CN) 的二和二复合物.
- 单晶X射线衍射分析以确定结构和Pt-Pt键距离.
- 光发光光谱学 (排放最大值,温度依赖) 和时间依赖密度函数理论 (TDDFT) 的计算.
主要成果:
- 成功合成了一种新家族的二二 (III) 复合物,表现出高效的NIR发射.
- 在可见光到近红外光谱中观察到的可调节的辐射能量,取决于轴联体.
- 在室温下,二 (II) 前体表现出强烈的绿色光,而二 (III) 复合物则在更广泛的范围内发射,包括NIR.
结论:
- 合成的二二 (III) 复合物是高效的NIR发射器,具有可调节的特性.
- 光物理行为受到轴联体和分子间效应的影响,并得到TDDFT计算的支持.
- 这些复合体对在可见到近红外区域需要可调节发光的应用具有前景.
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