Hydrodynamic Analysis of Well-Defined Flexible Linear Macromolecules of Low Molar Mass

Amorós, D. Marhuenda; Ott, Christina; Zaitseva, I. I.; Torre, José Garcı́a de la; Schubert, Ulrich S.

doi:10.1021/ma901027u

Cited by 17 publications

(13 citation statements)

References 31 publications

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“…The differential distribution of the sedimentation coefficient of RuL1 and RuL2 is shown in Figure 1, S 25 and S 26. The molar masses of the polymer samples were calculated by the modified Svedberg equation13 (Equation 1) as well as by the concept of the hydrodynamic invariant14 (Equation 2); these estimations are presented in Table 1. Thereby, a combination of the velocity sedimentation coefficient ( s 0 ) and the value of the frictional ratio ( f / f sph ) led to the modified Svedberg equation used for M sf determination from the hydrodynamic data,13 …”

Section: Resultsmentioning

confidence: 99%

Ruthenium(II) Metallo‐Supramolecular Polymers of Click‐Derived Tridentate Ditopic Ligands

Schulze

Friebe

Hoeppener

et al. 2012

Macromol. Rapid Commun.

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New ditopic 2,6-bis(1,2,3-triazol-4-yl)pyridine ligands featuring a π-conjugated spacer and clicked-on solubilizing groups were employed in the synthesis of Ru(II) metallo-supramolecular polymers that exhibit an intense metal-to-ligand charge transfer absorption in the visible light region. The coordination polymers obtained were studied in solution by means of size exclusion chromatography and analytical ultracentrifugation, revealing a comparably high molar mass and moderate rigidity. Investigations in the solid state by atomic force and transmission electron microscopy confirmed the formation of rod-like polymers. Furthermore, film preparation by drop-casting showed good film-forming properties. Thus, the solution-processable, photoredoxactive polymers might be applicable in solar cells.

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Section: Resultsmentioning

confidence: 99%

Ruthenium(II) Metallo‐Supramolecular Polymers of Click‐Derived Tridentate Ditopic Ligands

Schulze

Friebe

Hoeppener

et al. 2012

Macromol. Rapid Commun.

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“…If a sufficient number of the ligands are attached by flexible spacers to rather long macromolecules, the metal ion may be surrounded by a required number of the ligands to form a complex. 26,27 This means that only 0.6% of the solution volume is occupied by the polymer coils [ Fig. 2(A)].…”

Section: Intracoil Complexation With Different Metal Ionsmentioning

confidence: 99%

Intra‐ and inter‐supramolecular complexation of poly(butyl methacrylate)‐co‐2‐(1,2,3‐triazol‐4‐yl)pyridine copolymers induced by CoII, FeII, and EuIII ions monitored by molecular hydrodynamics methods

Perevyazko

Happ

Schubert

2016

J. Polym. Sci. Part A: Polym. Chem.

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Poly(butyl methacrylate) copolymers embedding bidentate 2-(1,2,3-triazol-4-yl)pyridine (trzpy) chelating units as comonomer in the side chains were synthesized by controlled radical addition-fragmentation transfer (RAFT) polymerization. Intracomplexation and intercomplexation of the macromolecules of the poly(butyl methacrylate) copolymers containing 20 % mol of trzpy units induced by Co II , Fe II , and Eu III ions were studied in the solutions by macromolecular hydrodynamics methods. The sedimentation velocity of extremely diluted copolymer solutions and the dynamic viscosity of moderately diluted solutions were studied in a wide range of the salts concentrations. Differences were observed with respect to the copolymer behavior in the presence of the Co ions. These differences are namely due to the differences in the number of coordination bonds required for complex formation and not explicitly to the nature of the corresponding anions.

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“…40) in DMA containing 0.8 mol-% NH 4 PF 6 . The molar masses were calculated from the modified Svedberg relationship (Equation (2)) [35] …”

Section: Molecular Hydrodynamics Studymentioning

confidence: 99%

π‐Conjugated Donor and Donor–Acceptor Metallo‐Polymers

Wild

Schlütter

Pavlov

et al. 2010

Macromol. Rapid Commun.

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Two zinc(II)‐ and two ruthenium(II) containing π‐conjugated metallo‐polymers were synthesized and characterized in detail. We could prove by SEC, analytical ultracentrifugation (AUC) and viscosimetry the ruthenium(II) metallo‐polymers to be high molar mass materials (Mfs = 20 000 g · mol−1 Ru1‐2; Mfs = 34 000 g · mol−1 Ru1) exhibiting intrinsic viscosities of up to [η] = 192 · cm3 · g−1. Applying spin‐coating we produced homogeneous films of the polymers and could, subsequently, investigate the photophysical properties in the solid state. Introducing the Ru(II) metallo‐polymers mixed with PCBM[60] as photoactive layer in bulk‐heterojunction solar cells resulted in very low efficiencies due to morphology problems. magnified image

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Hydrodynamic Analysis of Well-Defined Flexible Linear Macromolecules of Low Molar Mass

Cited by 17 publications

References 31 publications

Ruthenium(II) Metallo‐Supramolecular Polymers of Click‐Derived Tridentate Ditopic Ligands

Ruthenium(II) Metallo‐Supramolecular Polymers of Click‐Derived Tridentate Ditopic Ligands

Intra‐ and inter‐supramolecular complexation of poly(butyl methacrylate)‐co‐2‐(1,2,3‐triazol‐4‐yl)pyridine copolymers induced by CoII, FeII, and EuIII ions monitored by molecular hydrodynamics methods

π‐Conjugated Donor and Donor–Acceptor Metallo‐Polymers

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