Aggregation of an anionic porphyrin with chiral metal complexes and the competitive binding influences of a surfactant and a polyelectrolyte

Wang, Jian; Liu, Chengyong; Ding, Dongdong; Zeng, Lixi; Cao, Qian; Zhang, Hui; Zhao, Hong; Li, Xiangjun; Kai-xiang, Xiang; He, Yi; Wang, Guangwei

doi:10.1039/c1nj20193j

Cited by 9 publications

(9 citation statements)

References 81 publications

(77 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the porphyrin dianion (H 2 TPPS 2− ) forms highly organized J‐ and H‐aggregates at very low pH or in the presence of various inorganic and organic cations, which exhibit a strong nonlinear optical response and fast energy transfer within the aggregates . TPPS has also been used as building block for structure formation, for example, with cyanine dyes, chiral metal complexes, photoactive microcapsules, and peptides …”

Section: Introductionmentioning

confidence: 99%

Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly

Frühbeißer

Gröhn

2017

Macromol. Chem. Phys.

View full text Add to dashboard Cite

In this study, the self‐assembly of ionic porphyrins and polyelectrolytes in dependence on the polyelectrolyte architecture and molecular mass is investigated systematically. The systems consist of tetravalent anionic meso‐tetrakis(4‐sulfonatophenyl)‐porphyrin (TPPS), which is combined with different positively charged macroions: poly(amidoamine) dendrimer of generation 4, linear polylysine of different molecular masses, poly(diallyldimethylammonium chloride), and a cylindrical poly‐l‐lysine brush. Light scattering reveals defined supramolecular assemblies with hydrodynamic radii between RH = 30 nm and RH = 180 nm. Further, size and shape of TPPS–polyelectrolyte assemblies are substantially affected by the polyelectrolyte architecture but less by the molecular mass of the polyelectrolyte. ζ‐potential measurements detect an assembly charge corresponding to the excess component that is responsible for the aggregate being stable in solution.

show abstract

Section: Introductionmentioning

confidence: 99%

Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly

Frühbeißer

Gröhn

2017

Macromol. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…Different studies pointed out the important role played by hydrogen bonding [62][63][64], counter-anions [63], and specific cationic species [16,34,42,[65][66][67][68][69][70][71][72][73] in governing the kinetics of growth and, consequently, the general optical and chiroptical features of these systems. Some cations, such as Na + or K + exert the mere role of increasing the ionic strength thus decreasing the electrostatic repulsion between adjacent porphyrins and favoring the formation of an initial dimeric aggregate [58,60].…”

Section: Introductionmentioning

confidence: 99%

“…Ni 2+ or Zn 2+ are effective in stabilize these species [74,75], even if some specific role in the build-up of a mesoscopic network and in the chiroptical response has been recently pointed out for this latter metal ion [65]. Some chiral complex metal cations are able to specifically interact with the growing J-aggregates imprinting their chirality in the final structures [70,71]. Spermine and similar polyamines showed the ability to drive the self-assembling process leading to fractal or sea-urchin like structures, in which a dipolar coupling mechanism has been invoked to explain the unusually broad J-bands [16,17,76].…”

Section: Introductionmentioning

confidence: 99%

Role of Cobalt(III) Cationic Complexes in the Self-Assembling Process of a Water Soluble Porphyrin

Manganaro

Zagami

Trapani

et al. 2020

IJMS

View full text Add to dashboard Cite

Under moderate acidic conditions, the cationic (+3) complexes ions tris(1,10-phenanthroline)cobalt(III), [Co(phen)3]3+, and hexamminecobalt(III), [Co(NH3)6]3+, efficiently promote the self-assembling process of the diacid 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (H2TPPS4) into J-aggregates. The growth kinetics have been analyzed according to a well-established autocatalytic model, in which the rate determining step is the initial formation of a nucleus containing m porphyrin units (in the range 2–3), followed by a stage whose rate constant kc evolves as a power of time. The observed catalytic rate constants and the extent of J-aggregation increase on increasing the metal complex concentration, with the phen complex being the less active. The UV/Vis extinction spectra display quite broad envelops at the J-band, especially for the amino-complex, suggesting that electronic dipolar coupling between chromophores is operative in these species. The occurrence of spontaneous symmetry breaking has been revealed by circular dichroism and the measured dissymmetry g-factor decreases on increasing the aggregation rates. The role of these metal complexes on the growth and stabilization of porphyrin nano-assemblies is discussed in terms of the different degree of hydrophilicity and hydrogen bonding ability of the ligands present in the coordination sphere around the metal center.

show abstract

“…It indicated the driving force of the chirality transformation process is dominated by the electrostatic force between the cationic chiral complexes and anionic porphyrin derivates. 57 In this work, we further investigated the effect of chiral metal complexes on the self-assembly process of the cationic PIC molecules. The results show in anionic polyelectrolyte (PAAS) solution, that the PIC monomer could self-assemble to form J-aggregates.…”

Section: Introductionsmentioning

confidence: 99%

Studies on the interaction of achiral cationic pseudoisocyanine with chiral metal complexes

Wang

Zeng

Ding

et al. 2011

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

The effect of chiral metal complexes ([Co(en)(3)]I(3)·H(2)O, cis-[CoBr(NH(3))(en)(2)]Br(2), K[Co(edta)]·2H(2)O and [Ru(phen)(3)](PF(6))(2)) on the polymer-bound J-aggregates in aqueous mixtures of pesudoisocyanine (PIC) iodine and poly(acrylic acid, sodium)(PAAS) have been studied by UV-vis absorption, circular dichroism (CD) and fluorescence spectra. At low concentration, the PIC monomers could self-assemble to form supermolecules by binding to each of the COO(-) groups on the polymer chains through electrostatic interactions. After the addition of chiral metal complexes to the formed PIC-PAAS J-aggregates, we found that only the chiral multiple π-conjugated phenanthroline metal complexes could transfer their metal-centered chiral information to the formed J-aggregates. The chiral J-aggregates showed a characteristic induced circular dichroism (ICD) in the visible region of J-band chromophore, and the ICD signals depend on the absolute configuration, concentration of the chiral multiple π-conjugated metal complexes, as well as temperature. More interestingly, the supramolecular chirality of the polymer supported PIC J-aggregates could be memorized even after the addition of an excess opposite chiral complex enantiomers. This is in sharp contrast to the behavior in the high concentrated NaCl induced PIC-J aggregates, in which the optical rotation of a mixture of two enantiomers varies linearly with their ratio.

show abstract

Aggregation of an anionic porphyrin with chiral metal complexes and the competitive binding influences of a surfactant and a polyelectrolyte

Cited by 9 publications

References 81 publications

Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly

Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly

Role of Cobalt(III) Cationic Complexes in the Self-Assembling Process of a Water Soluble Porphyrin

Studies on the interaction of achiral cationic pseudoisocyanine with chiral metal complexes

Contact Info

Product

Resources

About