Achievement of efficient thermally activated delayed fluorescence materials based on 1,8-naphthalimide derivatives exhibiting piezochromic and thermochromic luminescence

被引:0
|
作者
Chen, Meiling [1 ,2 ]
Chen, Yuzhuo [3 ,4 ]
Su, Zhongzhen [3 ,4 ]
Li, Yuchun [5 ]
Fei, Hanxiao [5 ]
Zhang, Hua [5 ]
Wu, Yunan [6 ,7 ]
机构
[1] Sun Yat Sen Univ, Guangdong Prov Clin Res Ctr Canc, State Key Lab Oncol South China, Canc Ctr, Guangzhou 510060, Peoples R China
[2] Sun Yat Sen Univ, Dept Nucl Med, Canc Ctr, Guangzhou 510060, Peoples R China
[3] Sun Yat Sen Univ, Affiliated Hosp 5, Dept Ultrasound, Zhuhai 519000, Peoples R China
[4] Sun Yat Sen Univ, Affiliated Hosp 5, Dept Intervent Med, Guangdong Prov Key Lab Biomed Imaging, Zhuhai 519000, Peoples R China
[5] Sun Yat Sen Univ, Sch Med, Shenzhen Key Lab Syst Med Inflammatory Dis, Shenzhen Campus, Shenzhen 518107, Peoples R China
[6] Guangzhou Inst Chem, Chinese Acad Sci, Guangzhou 510650, Peoples R China
[7] Hengyang Aijie Technol Co Ltd, Hengyang 421006, Peoples R China
基金
中国国家自然科学基金;
关键词
NAPHTHALENE DIIMIDE; MECHANOFLUOROCHROMISM; ELECTROLUMINESCENCE; CARBAZOLE; EMISSION; TADF;
D O I
10.1039/d4ra02981j
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this study, we developed a D-A type imide derivative based on 1,8-naphthalimide, NI-mPCz, which exhibited outstanding thermally activated delayed fluorescence (TADF) properties. Additionally, it demonstrates characteristics of piezochromic and thermochromic luminescence. The thermochromic luminescence observed is attributed to crystalline transformations occurring during the heating process, as evidenced by differential scanning calorimetry (DSC) and microscopic examinations. Moreover, the good compatibility of NI-mPCz with HeLa cells and its excellent imaging performance indicate its potential for application in the field of biological imaging. These results provide valuable insights for the design and development of new organic electronic and bioimaging materials with high-efficiency TADF characteristics. During heating, NI-mPCz shows a red shift, then a blue shift, and finally another red shift. These shifts result from phase transitions in its crystalline structures at different temperatures, affecting its photophysical properties.
引用
收藏
页码:17434 / 17439
页数:6
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