Sequential deprotonation of meso-(p-hydroxyphenyl)porphyrins in DMF: From hyperporphyrins to sodium porphyrin complexes

	Sequential deprotonation of meso-(p-hydroxyphenyl)porphyrins in DMF: From hyperporphyrins to sodium porphyrin complexes
	Guo HW ; Jiang JG ; Shi YY ; Wang YL ; Wang YZ ; Dong SJ
刊名	journal of physical chemistry b
	2006
卷号	110 期号:1 页码:587-594
关键词	ACID DISSOCIATION-CONSTANTS MAGNETIC RESONANCE SPECTRA ORGANIC-SOLVENT MIXTURES NORMAL-MODE ANALYSIS TETRAPHENYLPORPHYRIN MOLECULES ELECTRONIC-SPECTRA RADICAL CATIONS EXCITED-STATES SHIFTS RAMAN
ISSN号	1520-6106
通讯作者	dong sj
中文摘要	sequential deprotonations of meso-(p-hydroxyphenyl)porphyrins (p-ohtpph2) in dmf + h2o (v/v = 1:1) mixture have been verified to result in the appearance of hyperporphyrin spectra. however, when the deprotonations of these p-ohtpph2 are carried out in dmf, the spectral changes differ considerably from those in the mixture mentioned above. at low [oh-], the optical spectra in the visible region are still considered to have characteristics of hyperporphyrin spectra. further deprotonation at much higher basicity makes the optical spectra form three-banded spectra similar to those in the acidic solution. to clarify the molecular origins of these changes, uv-vis, resonance raman (rr), proton nuclear magnetic resonance (h-1 nmr) experiments are carried out. our data give evidence that p-ohtpph2 in dmf can be further deprotonated of pyrrolic-h by higher concentrated naoh, due to an aprotic medium like dmf effectively weakening the basicity of the porphyrin relative to that of the naoh, and coordinates with two sodium ions (except the sodium ions that interact with the peripherial phenoxide anions) to form the sodium complexes of p-ohtpph2 (na2p, to lay a strong emphasis on the sodium ions that coordinate with the central nitrogen atom), which can be regarded as the porphyrin anions being perturbed by the sodium cations due to their highly ionic character.
收录类别	SCI
语种	英语
WOS记录号	WOS:000234520700088
公开日期	2010-08-17
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/15969]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Guo HW,Jiang JG,Shi YY,et al. Sequential deprotonation of meso-(p-hydroxyphenyl)porphyrins in DMF: From hyperporphyrins to sodium porphyrin complexes[J]. journal of physical chemistry b,2006,110(1):587-594.
APA	Guo HW,Jiang JG,Shi YY,Wang YL,Wang YZ,&Dong SJ.(2006).Sequential deprotonation of meso-(p-hydroxyphenyl)porphyrins in DMF: From hyperporphyrins to sodium porphyrin complexes.journal of physical chemistry b,110(1),587-594.
MLA	Guo HW,et al."Sequential deprotonation of meso-(p-hydroxyphenyl)porphyrins in DMF: From hyperporphyrins to sodium porphyrin complexes".journal of physical chemistry b 110.1(2006):587-594.