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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Wang, Shujun | - |
| dc.contributor.author | Peng, Yuling | - |
| dc.contributor.author | Zhang, Chenggen | - |
| dc.contributor.author | Li, Yongbing | - |
| dc.contributor.author | Liu, Chao | - |
| dc.date.accessioned | 2016-02-15T17:38:13Z | - |
| dc.date.available | 2016-02-15T17:38:13Z | - |
| dc.date.issued | 2016-02 | - |
| dc.identifier.issn | 0975-0975(Online); 0376-4710(Print) | - |
| dc.identifier.uri | http://hdl.handle.net/123456789/33768 | - |
| dc.description | 145-152 | en_US |
| dc.description.abstract | Three free-base porphyrins, modified with Boc-D-threonine and their zinc porphyrins have been synthesized using benzaldehyde, 4-chlorobenzaldehyde, and 4-methoxybenzaldehyde. The effects of peripheral substituents on the coordination reactions between zinc porphyrins and imidazole derivatives have been studied by UV-visible spectroscopy, fluorescence spectrometry, and theoretical calculations. The results show that the coordination reaction forms a Zn-N bond between zinc porphyrins involving different peripheral substituents and imidazole derivatives. The association coordination constants decrease (N-MeIm > Im) due to the change in enthalpy; the zinc porphyrin synthesized using 4-chlorobenzaldehyde and N-methylimidazole shows the largest association constant. Fluorescent quenching is observed during the coordination process with the zinc porphyrin synthesized using 4-methoxybenzaldehyde and N-methylimidazole showing the largest Stern-Volmer quenching rate constant. In addition, theoretical calculations have been used to investigate essential characteristics of the reaction, charges, bond lengths, and bond energies for each system. | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | NISCAIR-CSIR, India | en_US |
| dc.rights |  CC Attribution-Noncommercial-No Derivative Works 2.5 India | en_US |
| dc.source | IJC-A Vol.55A(02) [February 2016] | en_US |
| dc.subject | Coordination chemistry | en_US |
| dc.subject | Theoretical chemistry | en_US |
| dc.subject | Porphyrins | en_US |
| dc.subject | Zinc porphyrins | en_US |
| dc.subject | UV-visible spectroscopy | en_US |
| dc.subject | Fluorescence quenching | en_US |
| dc.title | Synthesis of zinc porphyrins and effect of peripheral substituents on the coordination reaction | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | IJC-A Vol.55A(02) [February 2016] | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 55A(2) 145-152.pdf | 550.17 kB | Adobe PDF | View/Open |
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