"Controlling the fate of two triplet states: solid-state annihilator design for photon upconversion" by Jussi Isokuortti and Lea Nienhaus. pubs.rsc.org/doi/D6S...
#photon #upconversion

#OEA_highlight High-efficiency infrared upconversion imaging with nonlinear silicon metasurfaces empowered by quasi-bound states in the continuum doi.org/10.29026/oea... by #Jumin_Qiu #Qiegen_Liu #Shuyuan_Xiao @NCUniv1921 #infrared #upconversion #imaging #nonlinear #metasurfaces #BIC

Biomimetic Upconverting Nanoplatforms for Glioblastoma Bioimaging and Targeted Therapy Glioblastoma (GB) is an aggressive and fast-progressing brain tumor with high recurrence rates and poor patient survival. Its resistance to conventional treatments and limited therapeutic options highlight the urgent need for innovative strategies to improve outcomes. In this scenario, we present a multifunctional biomimetic nanoplatform designed for targeted therapy and bioimaging of GB. The system comprises core–shell upconverting nanoparticles (UCNPs) coated with a mesoporous silica (UCNP@mSiO2), loaded with the chemotherapeutic agent temozolomide (TMZ), and cloaked with U251 GB cell membranes (BUCNP:TMZ). The mesoporous silica shell enhances stability and drug-loading capacity, while the membrane coating improves colloidal stability, immune evasion, and homotypic targeting. The UCNP core enables real-time near-infrared (NIR) imaging under 980 nm excitation. BUCNP:TMZ exhibits an average diameter of approximately 80 nm, a TMZ encapsulation efficiency of 58.5%, and drug complete release after 4 h at pH 5.5. Cellular internalization studies demonstrated preferential uptake of BUCNP:TMZ in homologous U251 GB cells compared to nonparental U87 and nonmalignant HDFn cells. Cell-viability assays showed a concentration-dependent cytotoxic response, with BUCNP:TMZ reducing U251 viability by over 50% at 50 μg mL–1, while showing minimal toxicity toward HDFn fibroblasts. This multifunctional nanoplatform integrates targeted delivery, NIR bioimaging, and sustained drug release into a single construct, offering a promising approach for GB theranostics.

Why are nanoparticles cool? Reason #9874: you can make them "wear" cancer cell membranes to evade the immune system and deliver drugs to those nasty cancer cells! #UCNPs #upconversion

pubs.acs.org/doi/full/10....

Upconversion nanoparticles are as tough as nails - you can even use them to tag explosives, as set out in this paper by the group of Hirsch! #UCNPs #upconversion

pubs.acs.org/doi/full/10....

Newton International Fellowships | Royal Society This fellowship is for non-UK scientists who are at an early stage of their research career and wish to conduct research in the UK.

The Royal Society Netwton International fellowship for non-UK early career researchers opens soon.

If anyone in the world of #upconversion is interested, please let me know because I can host.

royalsociety.org/grants/newton-international/

The UK's first dedicated #upconversion spectrometer is now up and running in my research group - high upconversion sensitivity detection, lifetime and quantum yield* capabilities. Please get in touch if you are interested in collaborating!

*Full upconversion QY coming later 2026

Just realized that an analogy for quantum superfluorescence in #upconversion nanoparticles is a like bag of microwave popcorn where every kernel pops nearly simultaneously, instead of individually over minutes! 🍿

#ucnps #photonics #chemsky

Breakthrough in Perovskite Solar Cells Utilizing Near-Infrared Light via Hybrid Nanoparticles Researchers have successfully developed a new type of perovskite solar cell that harnesses near-infrared light, enhancing energy conversion efficiency significantly.

Breakthrough in Perovskite Solar Cells Utilizing Near-Infrared Light via Hybrid Nanoparticles #Japan #Tokyo #Perovskite_Solar #Near-Infrared #Upconversion

More impressive optogenetics results utilizing #upconversion nanoparticles to help repair spinal cord injury

www.science.org/doi/10.1126/...

Impressive work on deep-tissue optoelectric stimulation without genetic modifications via #upconversion nanoparticles

www.science.org/doi/full/10....

You don't see rod-shaped upconversion nanoparticles often, interesting paper! #Chemsky #upconversion

www.nature.com/articles/s41...

These contact lenses give people infrared vision — even with their eyes shut Sci-fi-style technology uses nanoparticles to convert infrared light into visible light that humans can see.

Cool upconversion nanoparticle research in the news: seeing infrared with upconversion contact lenses!

#upconversion #chemsky

www.nature.com/articles/d41...

Love this PhD title appearing in my google scholar alerts by
@jasonrosscasar.bsky.social! Brilliant applied #upconversion research!

👏

Towards the ... International Day of Women and Girls in Science 🧑‍🔬

With a burning passion for #genetics, Soleh extracts and purifies #enzymes for the chemical #upconversion of waste 🦠♻️☀️

#womeninscience #womeninSTEM #IDWGS

Some different and fun experiments with PhD student Tahnim Sultana looking at #upconversion materials for active surfaces.

We've got some pretty 'hot' results we're hoping to finish off and share soon!

#chemsky 🧪

I'd like to create starter packs for upconversion research and also uranium glass collectors. Is there anyone else here?

#uraniumglass #upconversion

A novel path for sustainable photon #upconversion with non-precious metals: Scientists @uni_mainz and @BAMResearch use #chromium for efficient green-to-blue #PhotonUpconversion https://di-ri.co/5FqpX #photochemistry #chemistry @angew_chem