Effect of Heat on the Morphology and Optical Properties of Porphyrin Nanostructures

被引：8

作者：

Egharevba, G. O. ^{[1
]}

George, R. C. ^{[1
]}

Maaza, M. ^{[2
]}

机构：

[1] Obafemi Awolowo Univ, Dept Chem, Ife 220005, Nigeria

[2] Natl Res Fdn, IThemba LABS, Nanosci Labs, Somerset W, South Africa

来源：

SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY | 2008年 / 38卷 / 09期

关键词：

absorbance; agglomerate; J-bands; nanostructures; nanotubes; porphyrins;

D O I：

10.1080/15533170802440565

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Porphyrin nanostructures of well-defined shapes were prepared by ionic self-assembly of two oppositely charged porphyrins. These nanostructures were prepared using meso-tetra(4-phenylsulfonic acid) porphyrin, tin (IV) meso-tetra(4-pyridyl)porphyrin dichloride and vanadium (IV) oxide meso-tetra (4-pyridyl)porphyrin. The effect of heat resulted in intense agglomeration and production of porphyrin nanotubes of larger sizes and a greater population. These features of nanoporphyrins structures were observed using transmission electron microscope (TEM) and scanning electron microscope (SEM). UV-VIS absorption spectra of the samples show that those prepared at 70C have intense soret bands, with broadening of J-aggregate bands, when compared with those prepared at room temperature.

引用

页码：681 / 687

页数：7

共 23 条

[11]

KADISH K, 2001, PORPHYRIN HDB, V6, P43

[12] Control of coherence length and aggregate size in the J-aggregate of porphyrin [J].

Koti, ASR ;

Taneja, J ;

Periasamy, N .

CHEMICAL PHYSICS LETTERS, 2003, 375 (1-2) :171-176

[13] J-type aggregates of the anionic meso-tetrakis(4-sulfonatophenyl)porphine induced by "hindered" cationic porphyrins [J].

Lauceri, R ;

Gurrieri, S ;

Bellacchio, E ;

Contino, A ;

Monsu'scolaro, L ;

Romeo, A ;

Toscano, A ;

Purrello, R .

SUPRAMOLECULAR CHEMISTRY, 2000, 12 (02) :193-202

[14] Microscale synthesis and electronic absorption spectroscopy of tetraphenylporphyrin H-2(TPP) and metalloporphyrins Zn-II(TPP) and N-II(TPP) [J].

Marsh, DF ;

Mink, LM .

JOURNAL OF CHEMICAL EDUCATION, 1996, 73 (12) :1188-1190

[15] CHLOROPHYLL AND PHOTOSYNTHESIS [J].

MAUZERALL, D .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, 1976, 273 (924) :287-294

[16]

SMITH KM, 2006, NONPLANAR PORPHYRIN

[17]

SUSLICK KS, 1992, NEW J CHEM, V16, P633

[18]

Suslick KS, 2000, J PORPHYR PHTHALOCYA, V4, P407, DOI 10.1002/(SICI)1099-1409(200006/07)4:4<407::AID-JPP256>3.0.CO

[19]

2-5

[20] A refined model of the chlorosomal antennae of the green bacterium Chlorobium tepidum from proton chemical shift constraints obtained with high-field 2-D and 3-D MAS NMR dipolar correlation spectroscopy [J].

van Rossum, BJ ;

Steensgaard, DB ;

Mulder, FM ;

Boender, GJ ;

Schaffner, K ;

Holzwarth, AR ;

de Groot, HJM .

BIOCHEMISTRY, 2001, 40 (06) :1587-1595

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