Highly efficient NIR-II photothermal conversion from a 2,2′-biquinoline-4,4′-dicarboxylate-based photochromic complex

Zhang, Ning-Ning; Liu, Ya-Tong; Li, Li; Liu, Xiang-Tong; Xu, Ke; Li, Zhen-Yu; Yan, Yong

doi:10.1039/d4qi01166j

Inorg. Chem. Front.

2024

DOI: 10.1039/d4qi01166j

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Highly efficient NIR-II photothermal conversion from a 2,2′-biquinoline-4,4′-dicarboxylate-based photochromic complex

Ning-Ning Zhang,

Ya-Tong Liu,

Li Li

et al.

Abstract: The development of second near-infrared (NIR-II, 1000–1700 nm) absorbing photothermal materials has garnered significant attention in various fields, such as photothermal therapy, imaging, and photothermal catalysis, owing to the advantages...

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Enhancing Near-Infrared Photothermal Performance by Molecular Aggregation Optimization in Semiconductive Coordination Polymers

Yan,

Li,

et al. 2024

Inorg. Chem.

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Near-infrared (NIR) photothermal conversion materials have recently received widespread attention due to their potential in diverse applications. However, highly efficient organic-based NIR photothermal agents remain limited. Developing strategies to enhance the efficiency of NIR photothermal materials and elucidating the relationship between the NIR photothermal performance and molecular aggregation are highly desired. Herein, we report two coordination polymers, in which the ONDI 2− ligands assemble into different π−π stacking arrangements. Compound 1 exhibits H-aggregation, while compound 2 displays X-aggregation. The X-aggregation in compound 2 extends the optical absorption into the NIR region and enhances the absorption intensity. Consequently, compound 2 demonstrates a 1.8-fold increase in NIR photothermal efficiency (68.6%) compared to compound 1 (38.8%), attributed to more effective π−π interactions in Xaggregation. In addition, both compounds show semiconductive properties, with conductivities of 2.1 × 10 −7 S/cm for compound 1 and 3.0 × 10 −7 S/cm for compound 2 at 30 °C in a nitrogen atmosphere. These properties arise from the synergistic effects of "bandlike" charge transport within crystals and "hopping" charge transport across grain boundaries. By integration of their NIR photothermal effects and semiconductive properties, compounds 1 and 2 show interesting NIR photoelectrical responses.

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Enhancing Near-Infrared Photothermal Performance by Molecular Aggregation Optimization in Semiconductive Coordination Polymers

Yan,

Li,

et al. 2024

Inorg. Chem.

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A novel viologen-based hybrid crystalline material for photochromic glass films, information storage and anti-counterfeiting

Yu,

Li,

et al. 2024

Dalton Trans.

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Wavelength-selective duotone single-component photochromic gallophosphate-oxalate with multidirectional UVB/UVC/NIR photoswitch electron transfer

Yi,

Wang,

et al. 2025

Inorg. Chem. Front.

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Highly efficient NIR-II photothermal conversion from a 2,2′-biquinoline-4,4′-dicarboxylate-based photochromic complex

Abstract: The development of second near-infrared (NIR-II, 1000–1700 nm) absorbing photothermal materials has garnered significant attention in various fields, such as photothermal therapy, imaging, and photothermal catalysis, owing to the advantages...

Cited by 5 publications

References 51 publications

Enhancing Near-Infrared Photothermal Performance by Molecular Aggregation Optimization in Semiconductive Coordination Polymers

Enhancing Near-Infrared Photothermal Performance by Molecular Aggregation Optimization in Semiconductive Coordination Polymers

A novel viologen-based hybrid crystalline material for photochromic glass films, information storage and anti-counterfeiting

Wavelength-selective duotone single-component photochromic gallophosphate-oxalate with multidirectional UVB/UVC/NIR photoswitch electron transfer

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