𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The Self-Recognition and Self-Assembly of Folic Acid Salts in Isotropic Water Solution

✍ Scribed by Giovanni Gottarelli; Elisabetta Mezzina; Gian Piero Spada; Flavio Carsughi; Giovanni Di Nicola; Paolo Mariani; Annalaura Sabatucci; Stefania Bonazzi

Publisher
John Wiley and Sons
Year
1996
Tongue
German
Weight
853 KB
Volume
79
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The self‐assembly of alkaline folates in isotropic water solutions, with or without added salts, has been investigated by small‐angle neutron‐scattering, circular‐dichroism, and NMR techniques. The assembled species are chiral, cylindrical aggregates of finite length, composed of stacked tetramers; each tetramer is formed by Hoogsteen‐bonded folate residues. The assembly process is more efficient in the presence of an excess of Na^I^ ions, leading to longer aggregates with stronger tetramer‐tetramer‐tetramer interaction. In pure water, the rods are shorter and the tetramer‐tetramer interaction weaker. Association between folates can be detected by circular‐dichroism spectroscopy starting from a concentration of 6· 10^−4^ mol l^−1^, well below the critical concentration for the formation of the cholesteric mesophase (ca. 0.5 mol l^−1^).

📜 SIMILAR VOLUMES

ChemInform Abstract: Self-Assembly and M
ChemInform Abstract: Self-Assembly and Molecular “Recognition” Phenomena in Solutions of (Bio)polyelectrolyte Complexes
✍ V. A. Izumrudov 📂 Article 📅 2008 🏛 John Wiley and Sons ⚖ 15 KB 👁 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Self-assembly of Congo Red—A theoretical
Self-assembly of Congo Red—A theoretical and experimental approach to identify its supramolecular organization in water and salt solutions
✍ M. Skowronek; B. Stopa; L. Konieczny; J. Rybarska; B. Piekarska; E. Szneler; G. 📂 Article 📅 1998 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 372 KB 👁 2 views

The supramolecular organization of Congo Red molecules was studied to approach an understanding of the unusual complexation characteristics associated with the liquid crystalline nature of this dye. Differential scanning calorimetry (DSC) and nmr data indicate that Congo Red assembly arrangements di

Synthesis of Ru microspheres by self-ass
Synthesis of Ru microspheres by self-assembly in tungstosilicate acid solution and photocatalytic degradability of cango red
✍ Li Zhang; Hongyan Wang; Cong Wang 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 154 KB 👁 1 views

## Abstract The formation of Ru microspheres by hydrothermal treated method in tungstosilicate acid (H~4~SiW~12~O~40~, TSA) solution is described. The particles are characterized by X‐ray diffraction analysis (XRD) and scanning electron microscopy (SEM), respectively. The growth process of these mi