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Updated: Sep 17, 2025
Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
BOPYRENPY: A Modular Strategy toward Structurally Tunable Seven-Membered BF2-Chelated Chromophores
Edwin J Gonzalez1, Sofia C Santamarina2, Anton Y Khmelnitskiy1
1School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States.
Abstract:
A modular Knoevenagel condensation between 2-formylpyrroles and cyanomethylpyridine derivatives, followed by a chelation reaction, enables the synthesis of seven-membered BF2-chelated dyes, termed BOPYRENPY. This versatile strategy enhances structural diversity and functional applicability. In addition, our approach supports the late-stage incorporation of donor units via Suzuki coupling, allowing fine-tuning of fluorescence, Stokes shifts, and HOMO-LUMO energy levels. These findings establish BOPYRENPY as a versatile platform for next-generation chromophores based on 7-membered-ring dyes coordinated by BF2.
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