Li Zongan, Li Yongzhe, Lin Yingcheng, Alam Muhammad Zulfiker, Wu Ye
School of Electrical and Automation Engineering, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, Nanjing Normal University, Nanjing, Jiangsu 210046, China.
Nanjing Industry Institute for Advanced Intelligent Equipment, Nanjing, Jiangsu 210042, China.
ACS Omega. 2020 Dec 14;5(51):32868-32876. doi: 10.1021/acsomega.0c02788. eCollection 2020 Dec 29.
Development of the fluorophores whose fluorescence bands can be flexibly selected is of great interest for biotissue imaging. Compounds of Ag:MgS, Ag:NbS, Sm:YS, Sm:ErS, and Sm:ZrS were obtained through new chemical synthesis. They were characterized by X-ray photoelectron spectroscopy, X-ray diffraction spectroscopy, and transmission electron microscopy. They revealed polychromatic-photoluminescence spectra when excited by 280, 380, 480, 580, 680, and 785 nm light. Especially, near-infrared emission ranging from 800-1100 nm was found upon 785 nm light excitation. A band model was proposed to explain transitions responsible for the observed components of emission. Their broad fluorescence spectra cover from the ultraviolet to near-infrared spectral range. Their ability of emitting wide-range fluorescence was utilized for multicolor fluorescence imaging of biotissues, as demonstrated by pig-kidney tissue samples.
开发荧光带可灵活选择的荧光团对于生物组织成像具有重大意义。通过新的化学合成方法获得了Ag:MgS、Ag:NbS、Sm:YS、Sm:ErS和Sm:ZrS化合物。通过X射线光电子能谱、X射线衍射光谱和透射电子显微镜对它们进行了表征。当用280、380、480、580、680和785 nm光激发时，它们呈现出多色光致发光光谱。特别是，在785 nm光激发下发现了800 - 1100 nm的近红外发射。提出了一个能带模型来解释导致观察到的发射成分的跃迁。它们宽广的荧光光谱覆盖了从紫外到近红外光谱范围。如猪肾组织样本所示，它们发射宽范围荧光的能力被用于生物组织的多色荧光成像。
