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核苷酸模板超分子聚合物中诱导圆偏振发光的手性光学放大

Chiroptical Amplification of Induced Circularly Polarized Luminescence in Nucleotide-Templated Supramolecular Polymer.

作者信息

Das Angshuman, Ghosh Saikat, George Subi J

机构信息

New Chemistry Unit and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064, India.

出版信息

Angew Chem Int Ed Engl. 2023 Sep 18;62(38):e202308281. doi: 10.1002/anie.202308281. Epub 2023 Aug 10.

Abstract

Efficient circularly polarized luminescence (CPL) from purely organic molecules holds great promise for applications in displays, sensing, and bioimaging. However, achieving high dissymmetry values (g ) from organic chromophores remains a significant challenge. Herein, we present a bioinspired approach using adenosine triphosphate (ATP)-triggered supramolecular polymerization of a naphthalene diimide-derived monomer (ANSG) to induce CPL with a remarkable g value of 1.1×10 . The ANSG molecules undergo a templated, chiral self-assembly through a cooperative growth mechanism in the presence of ATP, resulting in scrolled nanotubes with aggregation-induced enhanced emission (AIEE) and induced CPL. Furthermore, we demonstrate the concept of chiroptical amplification of induced CPL by efficiently amplifying asymmetry using a mixture of chiral ATP and achiral pyrophosphate. This innovative approach opens numerous opportunities in the emerging field of circularly polarized luminescence.

摘要

纯有机分子产生的高效圆偏振发光(CPL)在显示、传感和生物成像等应用中具有巨大潜力。然而,从有机发色团获得高不对称值(g)仍然是一项重大挑战。在此,我们提出一种受生物启发的方法,利用三磷酸腺苷(ATP)触发萘二酰亚胺衍生单体(ANSG)的超分子聚合,以诱导产生g值高达1.1×10的显著圆偏振发光。在ATP存在下,ANSG分子通过协同生长机制进行模板化的手性自组装,形成具有聚集诱导增强发射(AIEE)和诱导圆偏振发光的卷曲纳米管。此外,我们通过使用手性ATP和非手性焦磷酸的混合物有效放大不对称性,证明了诱导圆偏振发光的手性光学放大概念。这种创新方法在圆偏振发光这一新兴领域开辟了众多机会。

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