Abstract
A major obstacle in luminescence imaging is the limited penetration of visible light into tissues and interference associated with light scattering and autofluorescence. Near-infrared (NIR) emitters that can also be excited with NIR radiation via two-photon processes can mitigate these factors somewhat because they operate at wavelengths of 650–1000 nm where tissues are more transparent, light scattering is less efficient, and endogenous fluorophores are less likely to absorb. This study presents photolytically stable, NIR photoluminescent, porous silicon nanoparticles with a relatively high two-photon-absorption cross-section and a large emission quantum yield. Their ability to be targeted to tumor tissues in vivo using the iRGD targeting peptide is demonstrated, and the distribution of the nanoparticles with high spatial resolution is visualized.
Original language | English |
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Article number | 1703309 |
Journal | Advanced Materials |
Volume | 29 |
Issue number | 39 |
DOIs | |
State | Published - Oct 18 2017 |
Bibliographical note
Publisher Copyright:© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Funding
D.K., J.K., and T.W. contributed equally to this work. This work was supported by the National Science Foundation under Grant No. CBET-1603177 and by the Defense Advanced Research Projects Agency (DARPA) under Cooperative Agreement HR0011-13-2-0017. The content of the information within this document does not necessarily reflect the position or the policy of the Government. D.K. and J.K. acknowledge financial support from the UCSD Frontiers of Innovation Scholars Program (FISP) fellowship. D.K. thanks the Basic Science Research Program of the Korea National Research Foundation (NRF) funded by the Ministry of Education (Grant No. 2016R1A6A3A03006343). K.H.A. thanks the Korea NRF (Grant Nos. 2014K1A1A2064569 and 2014K2A1A2044402) funded by MSIP and the Ministry of Health and Welfare (Grant No. HI13C1378). K.H.K. thanks the Korea NRF (Grant Nos. 2014R1A2A1A12067510 and 2017M3C7A1044964) funded by the MEST and Grant (1711031808/50581-2016) from the Korea Institute of Radiological and Medical Sciences funded by MSIP. Y.H. thanks the Korea NRF (Grant No. 2011-0030072) J.J. acknowledges support from the Basic Science Research Program through the Korea NRF funded by the Ministry of Education (Grant No. 2017R1D1A1B03035525).
Funders | Funder number |
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National Science Foundation Arctic Social Science Program | CBET-1603177, 1603177 |
Defense Advanced Research Projects Agency | HR0011-13-2-0017 |
University of California San Diego Health | |
Ministry of Education China | 2014K1A1A2064569, 2016R1A6A3A03006343, 2014K2A1A2044402 |
Ministry of Science, ICT and Future Planning | |
Korean Ministry of Health and Welfare | 2014R1A2A1A12067510, 2017M3C7A1044964, HI13C1378 |
National Research Foundation of Korea | |
Science and Technology Development Center, Ministry of Education | 1711031808/50581-2016 |
Korea Institute of Radiological and Medical Sciences | 2011-0030072, 2017R1D1A1B03035525 |
Keywords
- cancer diagnostics
- iRGD targeting peptide
- nanomedicine
- photoluminescence
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering