N-Doped Octagon-Containing HBC as Redox and pH Chiroptical Switch in the NIR

Dr. Miguel A. Medel, Lidia Hortigüela, Dr. Vega Lloveras, José Catalán-Toledo, Prof. Delia Miguel, Prof. Antonio J. Mota, Prof. Núria Crivillers, Prof. Araceli G. Campaña, Dr. Sara P. Morcillo
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Abstract

The optical and chiroptical properties of an aza-HBC-oct-[5]helicene have been studied and also modulated by means of protonation or oxidation. In both cases, the generated species shows a new absorption band in the NIR region that is not present in the neutral species. This result enables this N-doped nanographene to act both as optical and, remarkably, as chiroptical switch since both the CD and CPL can be modulated by external stimuli such as redox or pH changes.

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含HBC的N掺杂八方体在近红外中的氧化还原和pH啁啾开关
研究了氮杂HBC oct-[5]螺旋烯的光学和手性性质,并通过质子化或氧化进行了调制。在这两种情况下,生成的物种在近红外区域显示出中性物种不存在的新吸收带。这一结果使这种N掺杂的纳米石墨烯既可以作为光学开关,也可以作为手性光学开关,因为CD和CPL都可以通过外部刺激(如氧化还原或pH变化)进行调节。
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