Ultrafast signatures of merocyanine overcoming steric impedance in crystalline spiropyran
Khalid M Siddiqui, Simon F Bittmann, Stuart A Hayes, Kamil M Krawczyk, Antoine Sarracini, Gastón Corthey, Raison Dsouza, R J Dwayne Miller · 2024
Read Ultrafast signatures of merocyanine overcoming steric impedance in crystalline spiropyran by Khalid M Siddiqui, Simon F Bittmann, Stuart A Hayes, Kamil M Krawczyk, Antoine Sarracini, Gastón Corthey, Raison Dsouza, R J Dwayne Miller (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11632083.txt.
Description
Siddiqui and co-authors watch a light-driven molecule flip shape inside a crystal in a 2024 study. The molecule, a spiropyran, opens into a colored form called merocyanine when lit. Crystals usually block such flips because the packed neighbors leave no room. The team used flashes of light lasting tiny fractions of a second to catch the act.
Signs of the open form showed up in under two trillionths of a second. An early half-open state lived a few trillionths more before settling. The crystal strain then pushed many molecules back to the closed form, making the switch highly reversible. Paired beam tests backed that reading. The authors say the work points to fast, repeatable crystal switches.
Catalog record
| CREATOR | Khalid M Siddiqui, Simon F Bittmann, Stuart A Hayes, Kamil M Krawczyk, Antoine Sarracini, Gastón Corthey, Raison Dsouza, R J Dwayne Miller |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 28 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |