Luminescent 1,8‐Naphthalimide‐Derived Re^I Complexes: Syntheses, Spectroscopy, X‐ray Structure and Preliminary Bioimaging in Fission Yeast Cells

Abstract

A series of picolyl-functionalised, fluorescent 1,8-naphthalimide ligands (L) have been synthesised and coordinated to Re I to form luminescent cationic complexes of the general form fac-[Re(phen)(CO) 3 (L)]BF 4 . The complexes were characterised by using a range of spectroscopic and analytical techniques. One example of a complex was also characterised in the solid-state by using single-crystal X-ray diffraction, revealing a distorted octahedral coordination sphere at Re I and Re-C/Re-N bond lengths within the expected ranges. All ligands

Synthetic routes, characterization and photophysical properties of luminescent, surface functionalized nanodiamonds

“…Nap-1 was afforded in three steps from the commercially available 4-chloro-1,8-naphthalic anhydride, using conditions analogous to our previous reports 31 Nap-1 and Ru-1 are presented in the SI.…”

Excited-State Triplet Equilibria in a Series of Re(I)-Naphthalimide Bichromophores

“…Additionally, the π* energies of the chromophoric ligand (L–L) can also be modified, resulting in predictable changes to the LUMO energy . Other types of excited states, such as ligand-centered (LC) excited states, can also be observed in the triplet manifold of Re-CDI complexes if conjugated aryl systems or organic chromophores are appended to either the ancillary or chromophoric ligands. − Many of the synergistic benefits of polychromophoric systems (i.e., excited state lifetime extension, increase in absorption cross section, etc.) have been documented by our research group, ,− in addition to many others. − …”

Strategies to promote permeation and vectorization, and reduce cytotoxicity of metal complex luminophores for bioimaging and intracellular sensing

“…The most lipophilic of the derivatives studied entered nuclei, particularly in dividing cells. 66 Prior to this report, naphthalimide modified complexes had been reported for a different series of rhenium–naphthalimide complexes, 18a–d ( Fig. 6 ) and showed variable cell uptake characteristics in human osteoarthritic cells that depended on functionalisation.…”