Iron(II) coordination complexes with panchromatic absorption and nanosecond charge-transfer excited state lifetimes.,Nature Chemistry

当前位置： X-MOL 学术 › Nat. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Iron(II) coordination complexes with panchromatic absorption and nanosecond charge-transfer excited state lifetimes.
Nature Chemistry ( IF 19.2 ) Pub Date : 2019-11-18 , DOI: 10.1038/s41557-019-0357-z
Jason D Braun ₁ , Issiah B Lozada ₁ , Charles Kolodziej ₂ , Clemens Burda ₂ , Kelly M E Newman ₃ , Johan van Lierop _{3,

4} , Rebecca L Davis ₁ , David E Herbert _{1,

4}

Affiliation

Replacing current benchmark rare-element photosensitizers with ones based on abundant and low-cost metals such as iron would help facilitate the large-scale implementation of solar energy conversion. To do so, the ability to extend the lifetimes of photogenerated excited states of iron complexes is critical. Here, we present a sensitizer design in which iron(II) centres are supported by frameworks containing benzannulated phenanthridine and quinoline heterocycles paired with amido donors. These complexes exhibit panchromatic absorption and nanosecond charge-transfer excited state lifetimes, enabled by the combination of vacant, energetically accessible heterocycle-based acceptor orbitals and occupied molecular orbitals destabilized by strong mixing between amido nitrogen atoms and iron. This finding shows how ligand design can extend metal-to-ligand charge-transfer-type excited state lifetimes of iron(II) complexes into the nanosecond regime and expand the range of potential applications for iron-based photosensitizers.

中文翻译：

铁（II）配合物具有全色吸收和纳秒电荷转移激发态寿命。

用基于丰富和低成本金属（例如铁）的那些替代当前基准的稀有元素光敏剂将有助于促进大规模实施太阳能转换。为此，延长铁络合物的光生激发态寿命的能力至关重要。在这里，我们介绍了一种敏化剂设计，其中铁（II）中心由含有苯甲酰化的菲啶和喹啉杂环与酰胺基供体配对的骨架支撑。这些配合物表现出全色吸收和纳秒级电荷转移激发态寿命，这是由于空的，能量可接近的杂环基受体轨道和酰胺氮原子与铁之间的强力混合使不稳定而占据的分子轨道结合在一起而实现的。

更新日期：2019-11-18

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11