• Journal of Innovative Optical Health Sciences
  • Vol. 16, Issue 4, 2243002 (2023)
Hongjiang Chen1, Xiaoyu Tang2、3, Guangshuai Nie1, Zhen Wang1, Jia Hu1, Jun Hu1、*, and Huan Qin2、3、4、**
Author Affiliations
  • 1Department of Orthopaedics, The First Affiliated Hospital of Shantou University Medical College Shantou 515041, Guangdong Province, P. R. China
  • 2MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science College of Biophotonics, South China Normal University Guangzhou 510631, P. R. China
  • 3Guangdong Provincial Key Laboratory of Laser Life Science College of Biophotonics, South China Normal University Guangzhou 510631, P. R. China
  • 4Guangzhou Key Lab of Spectral Analysis and Functional Probes College of Biophotonics, South China Normal University Guangzhou 510631, P. R. China
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    DOI: 10.1142/S1793545822430027 Cite this Article
    Hongjiang Chen, Xiaoyu Tang, Guangshuai Nie, Zhen Wang, Jia Hu, Jun Hu, Huan Qin. Quantitative tracing of bioprobes by simultaneously monitoring radiative and nonradiative relaxations[J]. Journal of Innovative Optical Health Sciences, 2023, 16(4): 2243002 Copy Citation Text show less

    Abstract

    Bioprobe based on fluorescence is widely used in biological and medical research due to its high sensitivity and selectivity. Yet, its quantification in vivo is complicated and often compromised by the interaction between the fluorophore with the environmental factors, as well as the optical scattering and absorption by the tissue. A high florescence quantum yield and minimal interference by the environment are key requirements for designing an effective bioprobe, and the pre-requisitions severely limit the available options. We propose that a comprehensive evaluation of potential bioprobe can be achieved by simultaneously measuring both radiative and non-radiative transitions, the two fundamental and complementary pathways for the energy de-excitation. This approach will not only improve the accuracy of the quantification by catching the information from a broader spectrum of the energy, but also provide additional information of the probe environment that often impacts the balance between the two forms of the energy transition. This work first analyzes the underlying mechanism of the hypothesis. The practical feasibility is then tested by means of simultaneous measurements of photoacoustic signal for the non-radiative and fluorescence for the radiative energy processes, respectively. It is demonstrated that the systematic evaluation of the probe energy de-excitation results in an improved quantitative tracing of a bioprobe in complex environment.
    Hongjiang Chen, Xiaoyu Tang, Guangshuai Nie, Zhen Wang, Jia Hu, Jun Hu, Huan Qin. Quantitative tracing of bioprobes by simultaneously monitoring radiative and nonradiative relaxations[J]. Journal of Innovative Optical Health Sciences, 2023, 16(4): 2243002
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