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Questions related from Muhammad Yaseen
In the %Transmittance IR spectrum of a free base 5,10,15,20-(4-cyanophenyl)porphyrin produced three medium intensity peaks at 3623, 3726 and 3880 cm-1. May anyone justify these peaks?
14 March 2024 9,782 1 View
Why aryl aldehydes such as 4-N,N-dimethylbenzaldehyde and 4-aminbenzaldehyde fail to afford porphyrin via Adler method?
14 February 2024 1,551 3 View
Researchers are using two different approaches to calculate the oscillator strength. According to one approach oscillator strength (f) is equal to the product of dispersion energy multiplied by...
25 November 2023 3,988 0 View
Hello, can anyone please explain why Cu(II) and Ni(II) porphyrins do not exhibit fluorescence or under what conditions these metalloporphyrins may exhibit fluorescence.
09 March 2023 6,915 2 View
Anyone who can rapidly perform the DFT analysis of seven metalloporphyrins will be given authorship in the resulting article please contact me.
06 February 2023 1,738 1 View
I had one ESI mass spectrum of a porphyrin. The molecular ion appeared at 734.30. However additionally, i had also observed some peaks of low intensity around 850 and even around 1400 Dalton. My...
11 December 2022 6,982 4 View
Please inform the method that does not make use of acetic anhydride
07 October 2019 3,160 0 View
