Skip to main content

Molecular Recognition of Malto-oligosaccharides by Free and Metal Tetrakis(4-sulfonatophenyl)porphyrins in Basic Aqueous Solutions

Buy Article:

$113.00 plus tax (Refund Policy)


In pH 10.0 buffers, tetrakis(4-sulfonatophenyl)porphyrin (TSPP) has been found to form complexes with malto-oligosaccharides from maltose to maltoheptaose and soluble starch. The peak of the electronic absorption of TSPP is monotonously shifted to longer wavelengths with an increase in the number of D-glucopyranose residues in malto-oligosaccharide. Zn(II) TSPP (ZnTSPP) and Fe(III) TSPP (FeTSPP) also form complexes with malto-oligosaccharides. In the case of FeTSPP, the absorption peak is remarkably red shifted in pH 10.0 buffers that contain maltopentaose. The equilibrium constant of TSPP for the formation of the complex is increased with increasing numbers of D-glucopyranose residues, whereas the equilibrium constants of ZnTSPP and FeTSPP for maltopentaose are extraordinarily large compared to maltotetraose and maltohexaose. Induced circular dichroism spectra of TSPP, ZnTSPP, and FeTSPP in malto-oligosaccharide solutions differ from one another, suggesting different association modes of the complexes.


Document Type: Research Article


Affiliations: Department of Chemistry, Faculty of Education and Human Studies, Akita University, Tegata Gakuen-machi 1-1, Akita 010-8502, Japan

Publication date: June 1, 2001

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more