化学
光热治疗
锰
配体(生物化学)
体内
水溶液
顺磁性
光化学
辐照
纳米技术
物理化学
材料科学
有机化学
受体
核物理学
生物化学
生物技术
物理
生物
量子力学
作者
Ye Xu,Chao Li,Xiaoyu Wu,Ming‐Xing Li,Yun‐Sheng Ma,Hong Yang,Qingdao Zeng,Jonathan L. Sessler,Zhao‐Xi Wang
摘要
We report a stable, water-soluble, mononuclear manganese(IV) complex [MnIV(H2L)]·5H2O (Mn-HDCL) that acts as an efficient photothermal material. This system is based on a hexahydrazide clathrochelate ligand (L/HDCL) and is obtained via an efficient one-pot templated synthesis that avoids the need for harsh reaction conditions. Scanning tunneling microscopy images reveal that Mn-HDCL exists as a 2D sheet-like structure. In Mn-HDCL, the manganese(IV) ion is trapped within the cavity of the cage-like ligand. This effectively shields the Mn(IV) ion from the external environment while providing adequate water solubility. As a result of orbital transitions involving the coordinated manganese(IV) ion, as well as metal-to-ligand charge transfer effects, Mn-HDCL possesses a large extinction coefficient and displays a photothermal performance comparable to single-wall carbon nanotubes in the solid state. A high photothermal conversion efficiency (ca. 71%) was achieved in aqueous solution when subjected to near-infrared 730 nm laser photo-irradiation. Mn-HDCL is paramagnetic and provides a modest increase in the T1-weighted contrast of magnetic resonance images both in vitro and in vivo. Mn-HDCL was found to target tumors passively and allow tumor margins to be distinguished in vivo in a mouse model. In addition, it also exhibited an efficient laser-triggered photothermal therapy effect in vitro and in vivo. We thus propose that Mn-HDCL could have a role to play as a tumor-targeting photothermal sensitizer.
科研通智能强力驱动
Strongly Powered by AbleSci AI