当前位置: X-MOL 学术Adv. Therap. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Surface Charge and Nanoparticle Chromophore Coupling to Achieve Fast Exciton Quenching and Efficient Charge Separation in Photoacoustic Imaging (PAI) and Photothermal therapy (PTT)
Advanced Therapeutics ( IF 4.6 ) Pub Date : 2022-09-04 , DOI: 10.1002/adtp.202200168
Zehan Liu 1 , Jiangping Wen 2 , Guanqing Zhou 1 , Jinqiu Xu 1 , Lei Zhu 1 , Ming Zhang 1 , Feng Liu 1 , Yongming Zhang 1
Affiliation  

An organic semiconductor nanoparticle (OSN) with surface charge strategy is proposed, which displays excellent photothermal conversion performance. The donor–acceptor hybrid organic semiconductor Y6 is selected as a photothermal chromophore into nanoparticle by self-assembly, which affords long wavelength absorption, sub-bandgap emission, and high photon-to-thermal conversion. Y6 in OSN adopts closed packing comparing to that in single crystal. The surface charge in OSN causes super-quenching of the photon excitons, which enhances the nonradiative transition to improve photothermal effect. Lower energy level electronic states are created, which breaks up the bandgap limit and leads to long wavelength emission over 1100 nm. Photothermal therapy and photoacoustic imaging are applied successfully, indicating the success of the new methodology in designing photothermal conversion materials.

中文翻译:

表面电荷和纳米粒子发色团耦合以实现光声成像 (PAI) 和光热疗法 (PTT) 中的快速激子猝灭和高效电荷分离

提出了一种具有表面电荷策略的有机半导体纳米粒子 (OSN),它显示出优异的光热转换性能。供体-受体杂化有机半导体 Y6 作为光热发色团被选为纳米粒子,通过自组装实现长波长吸收、亚带隙发射和高光子热转换。与单晶相比,OSN中的Y6采用封闭封装。OSN 中的表面电荷导致光子激子的超猝灭,从而增强非辐射跃迁以改善光热效应。较低能级的电子态被创造出来,打破了带隙限制并导致超过 1100 nm 的长波长发射。成功应用光热疗法和光声成像,
更新日期:2022-09-04
down
wechat
bug