Poly(4-vinyl pyridine)/Zinc Dodecyl Benzene Sulfonate Mesomorphic State Due to Coordination Complexation

Abstract

Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. ABSTRACT: Recently, it has been shown that the properties of flexible and semi-rigid polyelectrolytes can be tailored by using specific surfactants. In these cases, mesomorphic structures in bulk and in solution and network morphologies in blends have been achieved. In polyelectrolytes, the available electrostatic interaction to bond the surfactants is large due to the charges bound to the polymer backbone. In this work, we show that mesomorphic behavior of even noncharged flexible polymers can be achieved if the interaction between the polymer and the surfactant is selected properly. The model system is atactic poly(4-vinyl pyridine) (P4W) in combination with zinc dodecyl benzene sulfonate (Zn(DBS)Z). FTIR measurements indicate that transition metal coordination between the Zn cation and the pyridine amines takes place: SAXS and birefringence show that mesomorphic structures are obtained, the long period being 27.8 A in the nominally fully complexed case and 26.1 A when the degree of complexation is 25%. Also pure Zn(DBS)Z is mesomorphic with the long period of 23.7 A. The difference between the layer thicknesses of Zn(DBS)Z and P4W(Zn(DBS)z), can be explained by the atacticity of the polymer.

Ordering in self-organizing comb copolymer-like systems obtained by hydrogen bonding between charged or noncharged polymers and amphiphiles

“…Consequently, it is appealing to consider whether the two 'blocks' could be synthesized separately, each at their optimal conditions, and let to interact only afterwards to form block copolymer-like physically bonded complexes. Several aspects of mesomorphic structures of complexes between flexible polymers and surfactants, or more generally end-functionalized oligomers, have been presented during recent years [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. (2) Selforganization of polymeric complexes is interesting even in its own right, as is also suggested in biochemistry.…”

“…This latter aspect is of very recent date and very intriguing. Finally it must be pointed out that several types of 'matching' attractive interactions can be used: examples are provided by charge transfer [15] and coordination complexation [16], but also more complicated sterically tailored combinations, i.e. molecular recognition, have been demonstrated in selected cases [26].…”

Supramolecular Microphase Separation in a Hydrogen-Bonded Liquid Crystalline Comb Copolymer in the Melt State

“…3,4 Both low molecular weight and polymeric liquid crystals have been realized using hydrogen bonding, starting with the pioneering work of Kato and Frechet 5 and continued by others in different systems. [6][7][8][9][10][11][12][13][14][15] Ruokolainen et al have used hydrogen bonding and charge transfer to complex aliphatic chains to homopolymers [16][17][18][19][20][21][22][23] and block copolymers. 24 Hydrogen bonding has also been used as a facile method for the preparation of LC block copolymers with novel thermooptic properties 25 and that exhibit orientational switching of the microstructure under electric fields.…”

Transport and Electro‐Optical Properties in Polymeric Self‐Assembled Systems

“…blocks. The interactions can be ionic [43,[53][54][55][56][57][58][59][60][61][62][63][64][65][66], in which case the term ionic self-assembly can be used [42]; they can be hydrogen bonds or their combinations [10,11,21,22,34,; they can be coordinative [89][90][91][92][93]; or they can in principle be any sufficiently strong attractive interaction or their combination. Over the years, several examples have arisen of physical interactions that enable one to prepare polymer-like materials (Figs.…”