Accepted author manuscript, 446 KB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Accepted author manuscript, 977 KB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Licence: CC BY
Research output: Contribution to Journal/Magazine › Journal article › peer-review
| <mark>Journal publication date</mark> | 14/02/2024 |
|---|---|
| <mark>Journal</mark> | Chemical Communications |
| Issue number | 13 |
| Volume | 60 |
| Number of pages | 4 |
| Pages (from-to) | 1731-1734 |
| Publication Status | Published |
| Early online date | 11/01/24 |
| <mark>Original language</mark> | English |
New phenyl and stilbene-bridged polyoxometalate (POM) charge-transfer chromophores with diphenylamino donor groups produce, respectively, the highest intrinsic and absolute quadratic hyperpolarisabilities measured for such species. The β 0,zzz obtained for the phenyl bridge - at 180 × 10 −30 esu - is remarkable for a short conjugated system while changing to the stilbene (260 × 10 −30 esu) produces a substantial increase in non-linearity for a minimal red-shift in the absorption profile. Together with TD-DFT calculations, the results show that maximising conjugation in the π-bridge is vital to high performance in such “POMophores”.