2023/01/01 by Hongye Chen, Luis Martín‐Gomis, Zhiyun Xu +7 · 1 voice
Chemistry · Materials Science · Physics and Astronomy · #Metal-Organic Frameworks: Synthesis and Applications #Porphyrin and Phthalocyanine Chemistry #Spectroscopy and Quantum Chemical Studies
paper · pdf · doi:10.1039/d3cp01865b
openalex publication_date 2023/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Organic chromophores and semiconductors, like anthracene, pentacene, perylene, and porphyrin, are prone to aggregation, and their packing in the solid state is often hard to predict and difficult to control. As the condensed phase structures of these chromophores and semiconductors are of crucial importance for their optoelectronic functionality, strategies to control their assembly and provide new structural motifs are important. One such approach uses metal-organic frameworks (MOFs); the organic chromophore is converted into a linker and connected by metal ions or nodes. The spatial arrangement of the organic linkers can be well-defined in a MOF, and hence optoelectronic functions can be adjusted accordingly. We have used such a strategy to assemble a phthalocyanine chromophore and illustrated that the electronic inter-phthalocyanine coupling can be rationally tuned by introducing bulky side grounds to increase steric hindrance. We have designed new phthalocyanine linkers and using a layer-by-layer liquid-phase epitaxy strategy thin films of phthalocyanine-based MOFs have been fabricated and their photophysical properties explored. It was found that increasing the steric hindrance around the phthalocyanine reduced the effect of J-aggregation in the thin film structures.