4.6 Article

Iridium(III) complexes with 1,10-phenanthroline-based NN ligands as highly selective luminescent G-quadruplex probes and application for switch-on ribonuclease H detection

Journal

JOURNAL OF MATERIALS CHEMISTRY B
Volume 4, Issue 42, Pages 6791-6796

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tb02316a

Keywords

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Funding

  1. Research Foundation for Distinguished Scholars of Qingdao Agricultural University [663-1116010]
  2. Hong Kong Baptist University [FRG2/15-16/002]
  3. Health and Medical Research Fund [HMRF/14130522]
  4. Research Grants Council [HKBU/12301115, HKBU/204612, HKBU/201913]
  5. French Agence Nationale de la Recherche/Research Grants Council Joint Research Scheme [AHKBU201/12, ANR-12-IS07-0001]
  6. National Natural Science Foundation of China [21575121]
  7. Guangdong Province Natural Science Foundation [2015A030313816]
  8. Hong Kong Baptist University Century Club Sponsorship Scheme
  9. Science and Technology Development Fund, Macao SAR [098/2014/A2]
  10. University of Macau [MYRG2015-00137-ICMS-QRCM, MRG044/LCH/2015/ICMS]

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A systematic study was performed to investigate the relationship between molecular structure and G-quadruplex sensing ability for a series of structurally related cyclometallated iridium(III) complexes. The novel complex 7 was used to construct a label-free luminescent switch-on G-quadruplex-based assay for RNase H activity in buffered solution. The constructed detection platform was simple, low-cost and highly sensitive for RNase H, and functioned effectively in the presence of cellular debris.

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