Enantioselective Light Harvesting with Perylenediimide Guests on Self‐Assembled Chiral Naphthalenediimide Nanofibers. Issue 47 (14th September 2017)

• Record Type: Journal Article
• Authors: Sethy, Ramarani; Kumar, Jatish; Métivier, Rémi; Louis, Marine; Nakatani, Keitaro; Mecheri, Nila Mohan Thazhe; Subhakumari, Akhila; Thomas, K. George; Kawai, Tsuyoshi; Nakashima, Takuya
• Is Part Of: Angewandte Chemie international edition. Volume 56:Issue 47(2017)
• Page Start: 15053
• Page End: 15057
• Publication Date: 2017-09-14
• Subjects: chiral recognition -- circular polarized luminescence -- enantioselectivity -- energy transfer -- self-assembly; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201707160
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Self‐assembling molecular systems often display amplified chirality compared to the monomeric state, which makes the molecular recognition more sensitive to chiral analytes. Herein, we report the almost absolute enantioselective recognition of a chiral perylenediimide (PDI) molecule by chiral supramolecular nanofibers of a bichromophoric naphthalenediimide (NDI) derivative. The chiral recognition was evaluated through the Förster resonance energy transfer (FRET) from the NDI‐based host nanofibers to the guest PDI molecules. The excitation energy was successfully transferred to the guest molecule through efficient energy migration along the host nanofiber, thus demonstrating the light‐harvesting capability of these hybrid systems. Furthermore, circularly polarized luminescence (CPL) was enantioselectively sensitized by the guest molecule as the wavelength band and sign of the CPL signal were switched in response to the chiral guest molecule. Abstract : The enantioselective recognition of a chiral perylenediimide (PDI) molecule by chiral supramolecular nanofibers of a bichromophoric naphthalenediimide (NDI) derivative is described. The chiral recognition was evaluated through the Förster resonance energy transfer (FRET) from the NDI nanofibers to the PDI molecules, which demonstrated the light‐harvesting capability of these hybrid systems.