Assessing the Photoinduced Electron-Donating Behavior of Carbon Nanodots in Nanoconjugates,Journal of the American Chemical Society

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Assessing the Photoinduced Electron-Donating Behavior of Carbon Nanodots in Nanoconjugates
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-11-19 , DOI: 10.1021/jacs.0c10132
Andrés Ferrer-Ruiz ₁ , Tobias Scharl ₂ , Laura Rodríguez-Pérez ₁ , Alejandro Cadranel _{2,

3,

4} , M Ángeles Herranz ₁ , Nazario Martín _{1,

5} , Dirk M Guldi ₂

Affiliation

Carbon nanodots (CNDs) undergo electron transfer in different scenarios. Previous studies have mainly focused on the electron-accepting features of CNDs in covalently linked donor-acceptor nanoconjugates. In view of this, we decided to carry out in this study the formation of covalently linked nanoconjugates that feature electron-donating pressure synthesized carbon nanodots (pCNDs) and electron-accepting 11,11,12,12-tetracyano-9,10-anthra-p-quinodimethane (TCAQ): pCND-TCAQ. The stability of the one-electron reduced form of TCAQ renders it the acceptor of choice. Detailed structural and electrochemical investigations allowed the characterization of pCND-TCAQ. Furthermore, investigations regarding intramolecular interactions, by means of steady-state and pump-probe transient absorption spectroscopies, allowed detection and characterization of three excited state species, in general, and the pCND•+-TCAQ•- charge-separated state, in particular.

中文翻译：

评估纳米复合物中碳纳米点的光致给电子行为

碳纳米点（CND）在不同的情况下经历电子转移。先前的研究主要集中在共价连接的供体-受体纳米缀合物中CND的电子接受特征。鉴于此，我们决定在这项研究中进行共价连接的纳米缀合物的形成，其特征是供电子压力合成碳纳米点（pCND）和受电子11,11,12,12-四氰基-9,10-蒽-对醌二甲烷（TCAQ）：pCND-TCAQ。 TCAQ 单电子还原形式的稳定性使其成为首选受体。详细的结构和电化学研究允许对 pCND-TCAQ 进行表征。此外，通过稳态和泵浦探针瞬态吸收光谱对分子内相互作用进行研究，通常可以检测和表征三种激发态物质，特别是 pCND•+-TCAQ•- 电荷分离态。

更新日期：2020-11-19

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