Smart Molecules Enhance Microscopy Resolution

Researchers at Chalmers University of Technology have developed smart molecules that significantly enhance the resolution of images obtained through two-photon microscopy. This advancement allows for more detailed study of cells and tissues in biomedical research, utilizing a more common and less expensive microscopy technique.

Traditionally, achieving higher resolution required four-photon microscopy, which involves very expensive equipment and can damage delicate biological samples due to intense laser light. The newly developed molecules enable researchers to attain resolution comparable to four-photon microscopy while using the simpler two-photon method.

"We have developed molecules that allow visualization of molecular-level details and monitoring of processes using the more common two-photon microscopy technique," stated Joakim Andréasson, Professor at the Department of Chemistry and Chemical Engineering at Chalmers. "These molecules have the capacity to achieve higher resolution than with four-photon microscopy, even when using two-photon microscopy."

The international project, funded by the EU with €2.3 million, involved synthesizing molecules by linking fluorescent dyes with "molecular photoswitches." Findings published in Nature Communications demonstrate that these molecules exhibit four-photon behavior even with two-photon excitation. The researchers believe this breakthrough could lead to new insights into diseases, pharmaceuticals, and the fundamental building blocks of life. Further studies are needed to optimize the technique for live cell applications.

Chalmers University of Technology is actively seeking continued funding to further develop this technology and explore its potential applications in scientific and medical fields.