Supramolecular‐Assembly and Surfactant‐Regulated Circularly Polarized Luminescence from a Spiranic BINOL‐Derived Borate Isoindolyl‐Indolenine (BBI) Dye

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Abstract Circularly polarized luminescence (CPL) materials have attracted significant attention owing to their unique luminescent properties and broad range of applications. However, challenges remain, including controlling helical assembly, mitigating aggregation‐caused quenching, balancing quantum yield ( Φ PL ) with g values. Here, the study reports synthesis a novel asymmetric, spiranic O‐organoboranes bearing isoindolyl‐indolenine scaffold (BBI) axial chirality through BINOL substitution, as well its supramolecular assembly surfactant‐regulated tunable CPL behaviors. The newly designed BBI dye shows relative weak 10% in toluene. Supramolecular acetonitrile/water co‐solvents exhibit an obvious aggregation‐induced emission (AIE) process, leading formation spherical nanostructures red‐shifted orange‐yellow (554 nm, = 0.012, 7%). Moreover, surfactant sodium dodecyl sulfonate (SDS) can promote aggregation pure deionized water, producing nanofibers blue‐shifted yellow (536 0.006, 13%). Crystal growth toluene/hexane SDS aqueous/acetonitrile systems reveals chiral crystals P 212121 space group, offering insights into amplification. This demonstrates ability precisely control parameters, X‐ray single‐crystal analysis providing additional understanding regulation.

Language: Английский

Hierarchical Chirality Transfer and Amplification within Conjugated Helical Polymers for Efficient Circularly Polarized Organic Light-Emitting Diodes and Photodetectors

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Circularly polarized organic light-emitting diodes (CP-OLEDs) and CP photodetectors have received enormous attention owing to their promising potential in light-related technologies. The simultaneous construction of efficient CP-OLEDs using the multifunctionality same chiral material remains be explored. Herein, achiral conjugated polymer poly(9,9-dioctylfluorene) (PFO) is used for coassembly with helical polyacetylenes. resulting emitters can achieve high-performance circularly electroluminescence (CPEL) a large dissymmetry factor (gEL) 0.11 high brightness 9035 cd m-2. By introducing flexible substrate into device, are realized. Additionally, such serve as photoactive layer photodetector detect light, maximum photocurrent (gph) order 10-1. This work provides route realize factors polyfluorene polymer, facilitating comprehensive versatile development.

Language: Английский