Energy Transport in Dichroic Metallo‐organic Crystals: Selective Inclusion of Spatially Resolved Arrays of Donor and Acceptor Dyes in Different Nanochannels. (16th December 2022)

• Record Type: Journal Article
• Authors: Wen, Qiang; Malik, Naveen; Addadi, Yoseph; Weißenfels, Maren; Singh, Vivek; Shimon, Linda J. W.; Lahav, Michal; van der Boom, Milko E.
• Is Part Of: Angewandte Chemie. Volume 135:Number 4(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-16
• Subjects: Dichroic Crystals -- Förster Resonance Energy Transfer -- Metal–Organic Frameworks -- Selective Guest Inclusion; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202214041
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: In this study, the precise positioning and alignment of arrays of two different guest molecules in a crystalline host matrix has been engineered and resulted in new optically active materials. Sub‐nm differences in the diameters of two types of 1D channels are sufficient for size‐selective inclusion of dyes. Energy transport occurs between the arrays of different dyes that are included in parallel‐positioned nanochannels by Förster resonance energy transfer (FRET). The color of individual micro‐sized crystals are dependent on their relative position under polarized light. This angular‐dependent behavior is a result of the geometrically constrained orientation of the dyes by the crystallographic packing of the host matrix and is concentration dependent. Abstract : Förster resonance energy transfer (FRET) between arrays of donor‐acceptor chromophores in a metal–organic framework has been observed. These arrays of aligned chromophores have been formed by size‐selective inclusion in differently nanosized channels, resulting in micro‐sized crystals with anisotropic optical properties.