Abstract
A series of bismuth(III) porphyrins with varying degrees of electron-donating and electron-withdrawing groups in their meso-positions have been synthesized. All the porphyrins were synthesized successfully and characterized spectroscopically. The absorption studies reveal bathochromically shifted spectra, up to [Formula: see text]60 nm, compared to their corresponding free-base porphyrins which is common for [Formula: see text]-type hyperporphyrins. Interestingly, all the samples exhibited broad near-IR phosphorescence at room temperature. The spectroscopic studies indicate that the demetallation occurs in both solution and solid states to form corresponding free-base porphyrin and this process is much faster in meso-trimethoxyphenyl substituted bismuth(III) porphyrin. Nevertheless, the study reveals interesting optical properties of bismuth(III) porphyrins, particularly red-shifted absorption and near IR emission bands.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.