2021
DOI: 10.1021/acs.inorgchem.1c00860
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Conjugated Pt(II) Complexes as Luminescence-Switch-On Reporters Addressing the Microenvironment of Bacterial Biofilms

Abstract: In this work, the synthesis, structural and photophysical characterization of six phosphorescent H 2 O-soluble Pt(II) complexes are reported while addressing their emission maxima, photoluminescence quantum yields (Φ L ), lifetimes (τ), aggregation tendency, and microenvironment sensitivity as a function of the substitution pattern on the main tridentate luminophore. Different ancillary ligands, namely, a trisulfonated phosphane and maltohexaose-conjugated pyridines (with or without amide bridges), were introd… Show more

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Cited by 12 publications
(29 citation statements)
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“…, d –π*) character. The weaker bands between 300 and 500 nm can be assigned to transitions into singlet excited states described as an admixture of LC and MLCT characters, where the contribution of the metal-based orbitals becomes more dominant, as seen in previous reports on related complexes. ,,,, Moreover, the calculated UV–vis spectra (by means of TD-DFT) nicely agree with the experimental data and confirm these assignments ( vide infra ).…”
Section: Resultssupporting
confidence: 85%
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“…, d –π*) character. The weaker bands between 300 and 500 nm can be assigned to transitions into singlet excited states described as an admixture of LC and MLCT characters, where the contribution of the metal-based orbitals becomes more dominant, as seen in previous reports on related complexes. ,,,, Moreover, the calculated UV–vis spectra (by means of TD-DFT) nicely agree with the experimental data and confirm these assignments ( vide infra ).…”
Section: Resultssupporting
confidence: 85%
“…The development of Pt­(II)-based anticancer agents illustrates one of the greatest developments in the field of inorganic medicinal chemistry, especially after the first implementation of cisplatin in chemotherapy. , To date, while there is an extensive number of coordination compounds of different transition-metal cations including Re­(I), Cu­(II), Ru­(II), Os­(II), Pd­(II), Ir­(III), and Au­(III), among many others, Pt­(II) continues to be one of the most popular choices for metal-based anticancer drugs, principally due to the relatively high cure rates of specific neoplastic diseases. , In addition to cancer therapy, luminescent Pt­(II) complexes have recently received significant attention due to their broad spectrum of applications, from organic light-emitting diodes (OLEDs) manufacture , to other fields, for example, as bioimaging agents, in photodynamic therapy, in photocatalysis, and as optical sensors . Pt­(II) complexes have a clear tendency toward aggregation, a process that is favored by the square-planar geometry of the d 8 -configured metal center.…”
Section: Introductionmentioning
confidence: 99%
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“…Luminescent transition metal complexes have been studied in the past years due to their broad range of applications including bioimaging, [1][2][3][4][5] photocatalysis, [6][7][8][9] OLEDs, [10][11][12] and optical sensors. [13][14][15][16][17][18] Among all the transition metals, Pt(II) complexes have been extensively explored, with more than 100 000 publications in the last 20 years, according to SciFinder © .…”
Section: Introductionmentioning
confidence: 99%