Bis(dipyrrinato)zinc(II) Complex Chiroptical Wires: Exfoliation into Single Strands and Intensification of Circularly Polarized Luminescence

Abstract

One-dimensional (1D) coordination polymers (CPs) experiences limitations in exfoliation into individual strands, which hamper their utility as functional 1D nanomaterials. Here we synthesize chiral 1D-CPs that feature the bis(dipyrrinato)zinc(II) complex motif. They can be exfoliated into single strands upon sonication in organic media, retaining lengths of up to 3.19 μm (ca. 2600 monomer units). Their chiroptical structure allows the exfoliated wires to show circularly polarized luminescence at an intensity 5.9 times that of reference monomer complexes.

Azabora[5]helicene Charge‐Transfer Dyes Show Efficient and Spectrally Variable Circularly Polarized Luminescence

“…With the idea to further enrich the photophysics of this fascinating platform we have built on their biaryl structure, which provides a means to arrive at dyes with helical chirality and the corresponding observation of interesting chiroptical properties, including the detection of circularly polarized luminescence (CPL) . The phenomenon is well established for supramolecular assemblies or nanostructures . However, the observation of CPL from small organic molecules (SOMs), albeit generally showing smaller dissymmetry factors ( g ), has recently created considerable interest in the dye chemistry community .…”

“…[29][30][31][32] The phenomenoni sw ell established for supramolecular assemblies or nanostructures. [29,[33][34][35][36][37][38][39][40] However,t he observation of CPL from small organicm olecules (SOMs), albeit generally showing smaller dissymmetry factors (g), has recently createdc onsiderable interesti nt he dye chemistry community. [30] Potential applications are chiral sensing or the preparation of chiroptical systems with innovative photophysical design.…”

Circularly Polarized Luminescent Carbon Dot Nanomaterials of Helical Superstructures for Circularly Polarized Light Detection

“…[16] In order to realize circularly polarized luminescence, asymmetrical environment and phosphors are essential elements. [17][18][19] Recent emergence of chiral inorganic nanostructures is driven by anticipated chiroptical effects and physical properties. Conjugated polymers grafted with chiral dopants and lanthanide complexes with chiral ligands are typical examples.…”

“…[32][33][34][35][36][37][38] It can be anticipated that conferring circularly polarized luminescence on carbon dots will avail novel circularly polarized luminescent nanomaterials for biomedicine and nanoscience. [17][18][19] Recent emergence of chiral inorganic nanostructures is driven by anticipated chiroptical effects and physical properties. They have intrinsic ability to selfassemble forming a left-handed chiral nematic organization that can be preserved upon drying.…”

Exfoliating a CdII–Purine Framework: Conversion of Nanosheets‐to‐Nanofibers and Studies of Elastic and Capacitive Properties

“…Literature is repletew ith examples of 1D nanomaterials obtained through the exfoliation of 1D coordination polymers, [34,35] synthesized by direct methods, hydrothermalo rs olvothermal procedures, and template-assisted syntheses, to name af ew.G raphene and related inorganic compounds/compositesalso afford formation of 1D nanostructures from self-assembly routes of 2D nanosheets. [36] These 1D nanostructures also reveal interesting properties like superior electrical and enhanced opticaland mechanical properties.…”