Achieving Ultrasound‐Excited Emission with Organic Mechanoluminescent Materials

Author:

Chang Kai1,Gu Juqing1,Yuan Likai1,Guo Jianfeng1,Wu Xiangxi1,Fan Yuanyuan1,Liao Qiuyan1,Ye Guigui1,Li Qianqian1ORCID,Li Zhen1ORCID

Affiliation:

1. Hubei Key Lab on Organic and Polymeric Opto‐Electronic Materials TaiKang Center for Life and Medical Sciences Department of Chemistry Wuhan University Wuhan 430072 China

Abstract

AbstractUnlike traditional photoluminescence (PL), mechanoluminescence (ML) achieved under mechanical excitation demonstrates unique characteristics such as high penetrability, spatial resolution, and signal‐to‐background ratio (SBR) for bioimaging applications. However, bioimaging with organic mechanoluminescent materials remains challenging because of the shallow penetration depth of ML with short emission wavelengths and the absence of a suitable mechanical force to generate ML in vivo. To resolve these issues, the present paper reports the achievement of ultrasound (US)‐excited fluorescence and phosphorescence from purely organic luminogens for the first time with emission wavelengths extending to the red/NIR region, with the penetrability of the US‐excited emission being considerably higher than that of PL. Consequently, US‐excited subcutaneous phosphorescence imaging can be achieved using a mechanoluminescent‐luminogen‐based capsule device with a quantified intensity of 9.15 ± 1.32 × 104 p s−1 cm−2 sr−1 and an SBR of 24. Moreover, the US‐excited emission can be adequately tuned using the packing modes of the conjugated skeletons, dipole orientation of mechanoluminescent luminogens, and strength and direction of intermolecular interactions. Overall, this study innovatively expands the kind of excitation sources and the emission wavelengths of organic mechanoluminescent materials, paving the way for practical biological applications based on US‐excited emission.

Funder

National Natural Science Foundation of China

Wuhan University

Publisher

Wiley

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3