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Janus Micromotors for Photophoretic Motion and Photon Upconversion Applications Using a Single Near-Infrared Wavelength

Author(s): Mena-Giraldo P; Kaur M; Maurizio SL; Mandl GA; Capobianco JA;

External stimuli can trigger changes in temperature, concentration, and momentum between micromotors and the medium, causing their propulsion and enabling them to perform different tasks with improved kinetic efficiencies. Light-activated micromotors are attractive systems that achieve improved motion and have the potential for high spatiotemporal control ...

Article GUID: 38197400


Achieving photostability in dye-sensitized upconverting nanoparticles and their use in Fenton type photocatalysis

Author(s): Kaur M; Maurizio SL; Mandl GA; Capobianco JA;

Dye sensitization is a promising approach to enhance the luminescence of lanthanide-doped upconverting nanoparticles. However, the poor photostability of near-infrared dyes hampers their use in practical applications. To address this, commercial IR820 was modified for improved photostability and covalently bonded to amine-functionalized silica-coated LnUC ...

Article GUID: 37552506


The role of lanthanide luminescence in advancing technology

Author(s): Tessitore G; Mandl GA; Maurizio SL; Kaur M; Capobianco JA;

Our society is indebted to the numerous inventors and scientists who helped bring about the incredible technological advances in modern society that we all take for granted. The importance of knowing the history of these inventions is often underestimated, although our reliance on technology is escalating. Lanthanide luminescence has paved the way for man ...

Article GUID: 37323462


Combining Pr3+-Doped Nanoradiosensitizers and Endogenous Protoporphyrin IX for X-ray-Mediated Photodynamic Therapy of Glioblastoma Cells

Author(s): Mandl GA; Vettier F; Tessitore G; Maurizio SL; Bietar K; Stochaj U; Capobianco JA;

Glioblastoma multiforme is an aggressive type of brain cancer with high recurrence rates due to the presence of radioresistant cells remaining after tumor resection. Here, we report the development of an X-ray-mediated photodynamic therapy (X-PDT) system using NaLuF4:25% Pr3+ radioluminescent nanoparticles in conjunction with protoporphyrin IX (PPIX), an ...

Article GUID: 37267436


Cooperative Sensitization Upconversion in Solution Dispersions of Co-Crystal Assemblies of Mononuclear Yb3+ and Eu3+ Complexes

Author(s): Sun G; Xie Y; Wang Y; Mandl GA; Maurizio SL; Zhang H; Ottenwaelder X; Capobianco JA; Sun L;

Lanthanide upconversion luminescence in nanoparticles has prompted continuous breakthroughs in information storage, temperature sensing, and biomedical applications, among others. Achieving upconversion luminescence at the molecular scale is still a critical challenge in modern chemistry. In this ...

Article GUID: 37040148


Upconversion Luminescence through Cooperative and Energy-Transfer Mechanisms in Yb3+ -Metal-Organic Frameworks

Author(s): Xie Y; Sun G; Mandl GA; Maurizio SL; Chen J; Capobianco JA; Sun L;

Lanthanide-doped metal-organic frameworks (Ln-MOFs) have versatile luminescence properties, however it is challenging to achieve lanthanide-based upconversion luminescence in these materials. Here, 1,3,5-benzenetricarboxylic acid (BTC) and trivalent Yb3+ ions were used to generate crystalline Yb-BTC MOF 1D-microrods with upconversion luminescence under ne ...

Article GUID: 36437239


On the photostability and luminescence of dye-sensitized upconverting nanoparticles using modified IR820 dyes

Author(s): Kaur M; Mandl GA; Maurizio SL; Tessitore G; Capobianco JA;

Dye sensitization is a promising route to enhance luminescence from lanthanide-doped upconverting nanoparticles (LnUCNPs) by improving the photon harvesting capability of LnUCNPs through the use of dye molecules, characterized by higher absorption coefficients. The literature does not fully address the poor photostability of NIR dyes, hindering solution-b ...

Article GUID: 36132705


Lifetime of the 3H4 Electronic State in Tm3+-Doped Upconverting Nanoparticles for NIR Nanothermometry

Author(s): Raab ME; Maurizio SL; Capobianco JA; Prasad PN;

Emission bands from thermally coupled states in lanthanide-doped nanoparticles have been studied for ratiometric nanothermometry in biological applications. Unfortunately certain factors such as water absorption distort the intensity, limiting the accuracy of ratiometric nanothermometry. However, the decay time of such states does not suffer from such dis ...

Article GUID: 34813703


The Key Role of Intrinsic Lifetime Dynamics from Upconverting Nanosystems in Multiemission Particle Velocimetry

Author(s): Tessitore G; Maurizio SL; Sabri T; Skinner CD; Capobianco JA;

Evaluation of particle dynamics at the nano- and microscale poses a challenge to the development of novel velocimetry techniques. Established optical methods implement external or internal calibrations of the emission profiles by varying the particle velocity and are limited to specific experimental conditions. The proposed multiemission particle velocime ...

Article GUID: 32924221


Intrinsic Time-Tunable Emissions in Core-Shell Upconverting Nanoparticle Systems.

Author(s): Tessitore G, Maurizio SL, Sabri T, Capobianco JA

Angew Chem Int Ed Engl. 2019 Jun 04;: Authors: Tessitore G, Maurizio SL, Sabri T, Capobianco JA

Article GUID: 31161694


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