Room‐Temperature Linear Light Upconversion in a Mononuclear Erbium Molecular Complex,Angewandte Chemie International Edition

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Room‐Temperature Linear Light Upconversion in a Mononuclear Erbium Molecular Complex
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-10-18 , DOI: 10.1002/anie.201810022
Bahman Golesorkhi ₁ , Homayoun Nozary ₁ , Laure Guénée ₂ , Alexandre Fürstenberg ₁ , Claude Piguet ₁

Affiliation

To date, the piling up of successive photons of low energies (near infrared; NIR) using a single lanthanide center and linear optics to ultimately produce upconverted visible emission was restricted to low‐phonon solid materials and nanoparticles. Now we show that the tight helical wrapping of three terdentate N‐donor ligands around a single nine‐coordinate trivalent erbium cation provides favorable conditions for a mononuclear molecular complex to exhibit unprecedented related upconverted emission. Low power NIR laser excitations into the metal‐centered transitions Er(⁴I_11/2←⁴I_15/2) at 801 nm or Er(⁴I_13/2←⁴I_15/2) at 966 nm result in upconverted blue–green emissions, where two or three photons respectively are successively absorbed by a molecular lanthanide complex possessing high‐energy vibrations.

中文翻译：

单核Er分子复合物中的室温线性光上转换

迄今为止，使用单个镧系元素中心和线性光学器件堆积低能量的连续低能量光子（近红外； NIR）以最终产生上转换的可见光发射仅限于低声子固体材料和纳米粒子。现在我们表明，三个齿状N-供体配体紧密缠绕在单个9配位三价around阳离子上，为单核分子复合物表现出空前的相关上转换发射提供了有利条件。低功率NIR激光激发到金属中心过渡尔（⁴我_11/2 ← ⁴我_15/2在801纳米或Er（）⁴我_13/2 ← ⁴我_15/2）在966 nm处会导致蓝绿色发射的转换，其中两个或三个光子分别被具有高能振动的分子镧系元素络合物连续吸收。

更新日期：2018-10-18

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