On-Surface Chemistry Induced by Long-Lived Excitons: (NO)2 Dissociation on C60.,The Journal of Physical Chemistry Letters

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On-Surface Chemistry Induced by Long-Lived Excitons: (NO)2 Dissociation on C60.
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2020-06-25 , DOI: 10.1021/acs.jpclett.0c01247
Christian Schwermann ₁ , Steffen Linden ₂ , Nikos L Doltsinis ₁ , Helmut Zacharias _{2,

3}

Affiliation

Solid-state excitonic excitations play an increasingly important role in optoelectronic and light harvesting processes due to their ubiquitous presence in dipolar two-dimensional materials. Here we show that long-lived solid-state excitons induce chemical reactions in adsorbed molecules and thus convert light into chemical energy. For the model system (NO)₂ dimer adsorbed on ordered c(4×4) C₆₀ films, time-of-flight measurements following UV laser excitation reveal a slow and a fast dissociative desorption channel, which are assigned to intersystem crossing and internal conversion, respectively, by time-dependent density functional theory calculations.

中文翻译：

长寿命激子引起的表面化学：（C60）（NO）2的解离。

固态激子激发在光电和光收集过程中起着越来越重要的作用，因为它们普遍存在于偶极二维材料中。在这里，我们表明，长寿命的固态激子会在吸附的分子中诱导化学反应，从而将光转换为化学能。对于吸附在有序c（4×4）C ₆₀薄膜上的模型系统（NO）₂二聚体，UV激光激发后的飞行时间测量显示出缓慢且快速的解离解吸通道，这些通道分配给系统间交叉和内部分别通过与时间有关的密度泛函理论计算进行转换。

更新日期：2020-07-16

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