Enhanced Photoabsorption and Radiative Decay Rate Constant on Fused Planar Fluorene-Stilbene Frameworks: Experimental and Computational Studies.

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Tác giả: Keisuke Iwata, Hayato Tsuji

Ngôn ngữ: eng

Ký hiệu phân loại: 211.7 Agnosticism and skepticism

Thông tin xuất bản: Germany : Macromolecular rapid communications , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 692505

This study reports the synthesis and characterization of two novel carbon-bridged oligo(phenylenevinylene) (COPV)-fluorene alternating fused molecules, FLCOPVFL and COPVFLCOPV, designed to enhance light absorption and emission in the blue spectral region. Both compounds exhibit high molar extinction coefficients, blue photoluminescence with quantum yields of 0.91 and 0.92, respectively, and large radiative decay rate constants. Computational studies reveal strong electronic interactions between COPV and fluorene units, resulting in enhanced transition oscillator strengths. Further comparative analysis of two coplanar π-conjugated systems, COPVs and ladder-type poly(p-phenylene)s, highlights the difference in conjugation propagation properties. These findings provide valuable insights for designing advanced π-conjugated systems with tailored optical and electronic functionalities, paving the way for their optoelectronic applications.
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