Speaker
Description
Fluorophores that emit in an aggregated state are useful for many applications, including biosensors, chemosensors and optoelectronic devices. A new class of zwitterionic organic molecules studied show high quantum yields in the solid-state, as well as reversible changes in emission spectra when subjected to anisotropic force. Two representative molecules show quantum yields ranging from 51 to 82%, as well as reversible changes in emission peak maxima up to 74 nm when mechanically grinded in a mortar and pestle. Insights into the mechanism of action are explored via ambient and high-pressure crystallography, as well as powder X-ray diffraction. Crystal packing and Hirshfeld analysis of intermolecular interactions help to rationalise the photophysical properties seen, allowing a mechanism for the emission sensitivity to be proposed that is supported by TD-DFT calculations. Overall, these novel molecules are bright and highly sensitive to their environment, which are desirable properties for their use in applications.
| Terms and conditions (Please confirm that you have read all the requirements and agree to the conditions) | Yes |
|---|---|
| Students Only – Do you wish to take part in the Student Poster Slam | Yes |
| Presenter Gender | Man |
| Pronouns | He/Him |
| Students Only - if available would you be interested in student travel funding | Yes |
| Do you intend to attend UM2022 | In person - Melbourne |
| Level of Expertise | Student |
