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Synergetic Effect of Mo 6 Clusters and Gold Nanoparticles on the Photophysical Properties of Both Components
Author(s) -
Novikova Evgeniya D.,
Vorotnikov Yuri A.,
Nikolaev Nazar A.,
Tsygankova Alphiya R.,
Shestopalov Michael A.,
Efremova Olga A.
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202004618
Subject(s) - photothermal therapy , colloidal gold , surface plasmon resonance , nanoparticle , materials science , plasmon , cluster (spacecraft) , plasmonic nanoparticles , photothermal effect , nanotechnology , photochemistry , chemistry , optoelectronics , computer science , programming language
Photodynamic and photothermal therapies (PDT, and PTT, respectively) are promising candidates for multimodal anticancer therapies (i.e., combinations of therapies), since their action is based on mechanisms that generally cannot be resisted by cancer cells, that is, generation of highly oxidizing oxygen species and high temperature, respectively. Herein, hybrid materials that combine octahedral molybdenum clusters as potential PDT agents and plasmonic spherical gold nanoparticles (AuNPs) as PTT agents are reported. Partial overlap of the photoemission spectrum of the cluster and the surface plasmon resonance band of the AuNPs facilitates energy transfer between the photoactive components, which resulted in synergetic enhancement of their photophysical properties. Specifically, by careful selection of the spacing between the cluster and the gold nanoparticle, a significant increase in luminescence and photosensitizing properties of the cluster was achieved in comparison with similar, but gold‐free, particles. On the other hand, the cluster complex facilitated energy conversion to heat by gold particles and hence increased the heating rate under laser irradiation.

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