Synthesis on NIR-II Multifunctional Imaging and Photothermal Therapy of a Novel Water-Soluble Molecule.

Cao, Mengyu; Wang, Chang; Wang, Fang; Zou, Wentao; Yu, Bing; Cong, Hailin; Shen, Youqing · Adv Healthc Mater · 2024

basic_science · Level V

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Abstract

The synthesis of water-soluble symmetric molecules with donor-acceptor-donor (D-A-D) structure is reported. The compound is connected by π bridge with 2-bromofluorene external polyethylene glycol 2000 as the shielding unit, and donor component and pyrrolopyrrole (DPP) as the acceptor unit. The D-A-D double donor fluorescent molecule P2-DPP is obtained by coupling reaction. The absorption peak and emission peak of the fluorescent molecule P2-DPP are 600 and 1020 nm, respectively. It has potential excellent imaging characteristics. It does not need to use nanoparticles formed by the DSPE-MPEG amphiphilic block to form micelles. The quantum yield reaches 0.6% and the penetration depth can reach 10 mm. The chemical is capable of achieving liver and renal metabolism. It has a good application prospect in the photothermal therapy of mouse tumors and realizes the integration of biological diagnosis and treatment.

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