Abstract
Near-infrared (NIR) light is known to have outstanding optical penetration in biological tissues and to be non-invasive to cells compared with visible light. These characteristics make NIR-specific light optimal for numerous biological applications, such as the sensing of biomolecules or in theranostics. Over the years, significant progress has been achieved in the synthesis of fluorescent cyclophanes for sensing, bioimaging, and making optoelectronic materials. The preparation of NIR-emissive porphyrin-free cyclophanes is, however, still challenging. In an attempt for fluorescence emissions to reach into the NIR spectral region, employing organic tetracationic cyclophanes, we have inserted two 9,10-divinylanthracene units between two of the pyridinium units in cyclobis(paraquat-p-phenylene). Steady-state absorption, fluorescence, and transient-absorption spectroscopies reveal the deep-red and NIR photoluminescence of this cyclophane. This tetracationic cyclophane is highly soluble in water and has been employed successfully as a probe for live-cell imaging in a breast cancer cell line (MCF-7).
Original language | English (US) |
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Pages (from-to) | 9182-9190 |
Number of pages | 9 |
Journal | Journal of the American Chemical Society |
Volume | 145 |
Issue number | 16 |
DOIs | |
State | Published - Apr 26 2023 |
Funding
The authors would like to thank Northwestern University (NU) for their continued support of this research. The authors acknowledge the Integrated Molecular Structure Education and Research Center (IMSERC) at NU and the Northwestern University Biological Imaging Facility (RRID: SCR_017767) for providing access to equipment for the experiments. The Biological Imaging Facility at Northwestern University is generously supported by the Chemistry for Life Processes Institute, the Department of Molecular Biosciences, the Rice Foundation, and the NU Office for Research. This project was also supported by the National Science Foundation under grant number DMR-2003739 (M.R.W. and R.M.Y.). This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under contract no. DE-AC02-06CH11357. The use of the LS-CAT Sector 21 was supported by the Michigan Economic Development Corporation and the Michigan Technology Tri-Corridor (grant 085P1000817). J.S.W.S. gratefully acknowledges support from the Ryan Fellowship and the International Institute for Nanotechnology at Northwestern University. The authors thank Paige J. Brown for her assistance on the fluorescence measurement.
ASJC Scopus subject areas
- General Chemistry
- Biochemistry
- Catalysis
- Colloid and Surface Chemistry
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CCDC 2161003: Experimental Crystal Structure Determination
David, A. H. G. (Contributor), Garci, A. (Contributor), Abid, S. (Contributor), Li, X. (Contributor), Young, R. M. (Contributor), Seale, J. S. W. (Contributor), Hornick, J. E. (Contributor), Azad, C. S. (Contributor), Jiao, Y. (Contributor), Roy, I. (Contributor), Akpinar, I. (Contributor), Kesharwani, T. (Contributor), Stern, C. L. (Contributor), Wasielewski, M. R. (Contributor) & Stoddart, J. F. (Contributor), Cambridge Crystallographic Data Centre, 2023
DOI: 10.5517/ccdc.csd.cc2bjpsc, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc2bjpsc&sid=DataCite
Dataset
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CCDC 2161001: Experimental Crystal Structure Determination
David, A. H. G. (Contributor), Garci, A. (Contributor), Abid, S. (Contributor), Li, X. (Contributor), Young, R. M. (Contributor), Seale, J. S. W. (Contributor), Hornick, J. E. (Contributor), Azad, C. S. (Contributor), Jiao, Y. (Contributor), Roy, I. (Contributor), Akpinar, I. (Contributor), Kesharwani, T. (Contributor), Stern, C. L. (Contributor), Wasielewski, M. R. (Contributor) & Stoddart, J. F. (Contributor), Cambridge Crystallographic Data Centre, 2023
DOI: 10.5517/ccdc.csd.cc2bjpq9, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc2bjpq9&sid=DataCite
Dataset