在溶液中具有蓝色和NIR-II旋转发光的 (III) 复合物
Matthias Dorn1, Jens Kalmbach2, Pit Boden3
1Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany.
Journal of the American Chemical Society
|April 11, 2020
概括
研究人员开发了一种新型的 (III) 复合物,mer-[V(ddpd) [2][PF6]3,在室温下呈现蓝色和近红外II (NIR-II) 发光. 这一突破为贵重金属光灯提供了经济实惠的替代品.
科学领域:
- 无机化学
- 材料科学
- 光物理学
背景情况:
- 在室温下从地球上丰富的第一排过渡金属发光是具有挑战性的,因为体场的分裂和高效的非辐射衰变.
- 由于额外的非辐射通路,在近红外 (NIR) 区域实现发光特别困难.
- 没有地球上丰富的第一排过渡金属复合物在溶液中在室温下显示出超过1000nm的辐射.
研究的目的:
- 探索地球上丰富的金属复合物的发光特性,特别是 (III) 复合物.
- 研究 (III) 复合物作为蓝色和NIR-II光的潜力.
- 开发新的发光材料,以成本高效替代贵金属和稀土元素复合物.
主要方法:
- (III) 复合物的合成和表征,mer-[V(ddpd) [2][PF6]3.
- 光发光谱测量辐射光谱,量子产量和寿命.
- 在室温溶液 (乙尼) 和在77K玻璃中进行的研究.
主要成果:
- (III) 复合物mer-[V(ddpd) [2][PF6]3在室温下在酸中表现出约1100nm (NIR-II区域) 的光,其量子产量为1.8 × 10−4%.
- 该复合物还表现出强烈的蓝色光,在室温下具有2%的酸量子产量.
- 这些发现证明了 (III) 复合体作为双模光体的可行性.
结论:
- 具有d2电子配置的 (III) 复合体代表了一类新的蓝色和NIR-II光体.
- 这些复合物提供了基于昂贵的贵金属和稀土元素的传统光源的有希望的,成本高效的替代品.
- 这项研究为各种光学应用的功能材料的开发开辟了新的途径.
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