Synthesis and self-assembly of novel porphyrin molecular wires

Kawao, Masahiro; Ozawa, Hiroaki; Tanaka, Hirofumi; Ogawa, Takuji

doi:10.1016/j.tsf.2005.07.143

Cited by 30 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 21,22 ] So far, some Pc or porphyrin derivatives have already been reported as molecular wire, molecular rectifier, and molecular switch materials. [ 23–27 ] However, more Pc‐based polymers with excellent electric characteristic are expected to be developed in order to meet the needs of more functional application areas.…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembly and Molecular Electrical Switching Property of Phthalocyanine‐Based Liquid‐Crystalline Poly(Styrene Sulfonic Acid) Compounds

Kong

Tang

Chang

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

A series of phthalocyanine‐based liquid‐crystalline poly(styrene sulfonic acid) compounds (LCPCs) are synthesized using cholesterol, dicarboxylic acid, amino‐ zinc phthalocyanine, and polystyrene sulfonic acid. The chemical structure, thermal property, liquid‐crystalline behavior, direct current conductivity, and temperature‐controlled molecular electronic switch property are investigated by use of various techniques. The LCPCs show both columnar phase (Colh) induced by the phthalocyanine moieties and nematic discotic (Nd) phase formed by the collapse of the columnar phase structure. The temperature‐dependent conductivity of the LCPCs is associated with the activation energy evaluated by Broido's graphical procedure according to the thermogravimetric analytical curves. The LCPCs show low conductivity derived from 1D charge migration through phthalocyanine cores in the colh phase, but exhibit high conductivity due to 3D ionic charge transport in the Nd phase. A temperature‐controlled molecular electronic switch is fabricated on the basis of the temperature‐dependent conductivity property, which can be useful for some potential applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Self‐Assembly and Molecular Electrical Switching Property of Phthalocyanine‐Based Liquid‐Crystalline Poly(Styrene Sulfonic Acid) Compounds

Kong

Tang

Chang

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…[7] The chemical versatility of porphyrin offers the possibility of driving self-assembly molecular aggregation to ordered geometrical structures such as rods, rings, wires, spheres, fibers, and three-dimensional lattices. [8][9][10][11][12] However, not all geometrical structures of porphyrin can be controlled at the nanoscale and instead may have a micro or crystallization structure, making them useless for nanoscale applications.…”

Section: Introductionmentioning

confidence: 99%

In vitro Evaluation of Hexagonal Polymeric Micelles in Macrophage Phagocytosis

Tsai

Chang

Chiu

et al. 2011

Macromol. Rapid Commun.

View full text Add to dashboard Cite

This paper develops a non-spherical polymeric micelle using an amphiphilic block copolymer and a porphyrin crystalline structure. The nanoscale polymer micelles were characterized by transmission electron microscopy (TEM) and atomic force microscopy (AFM), revealing particle sizes of approximately 150 nm with a particular shape in the hexagonal lattice. The shape shows the selective uptake efficacy for the HeLa and macrophage cells, and inhibits phagocytosis against the macrophage.

show abstract

“…Bis(2,7-naphthylenedioxy)-bridged cyclic porphyrin dimer (1), [34] monobridged acyclic porphyrin dimer (2), [34] and reference monomer (3) [60] were synthesized as previously reported procedures. Chlorobenzene (PhCl) was distilled from CaH2.…”

Section: Instrumentation and Materialsmentioning

confidence: 99%

Outstanding Enhancement in the Axial Coordination Ability of the Highly Rigid Cofacial Cyclic Metalloporphyrin Dimer

Yamashita

Furutani²,

Ogawa³

2021

Preprint

Self Cite

View full text Add to dashboard Cite

<div>Copper- and nickel-porphyrin complexes show extremely weak axial coordination ability without any electron-withdrawing groups. Herein, we report axial ligation on CuII- and NiII-porphyrins in a highly rigid cofacial porphyrin dimer with a bidentate ligand, 1,4-diazabicyclo[2.2.2]octane (DABCO). To the best of our knowledge, this is the first report on the use of CuII- and NiII-porphyrins for coordination-induced guest binding of porphyrin-based host molecules without the help of other metal ions. The high rigidity of the dimer induces guest binding through the cooperative effect of weak axial ligation. The results showed that CuII- and ZnII-complexes bind one DABCO molecule inside their cavities, whereas the NiII-complex binds two additional DABCO molecules outside to form a stable 6-coordinate paramagnetic NiII-complexes. </div>

show abstract

Synthesis and self-assembly of novel porphyrin molecular wires

Cited by 30 publications

References 20 publications

Self‐Assembly and Molecular Electrical Switching Property of Phthalocyanine‐Based Liquid‐Crystalline Poly(Styrene Sulfonic Acid) Compounds

Self‐Assembly and Molecular Electrical Switching Property of Phthalocyanine‐Based Liquid‐Crystalline Poly(Styrene Sulfonic Acid) Compounds

In vitro Evaluation of Hexagonal Polymeric Micelles in Macrophage Phagocytosis

Outstanding Enhancement in the Axial Coordination Ability of the Highly Rigid Cofacial Cyclic Metalloporphyrin Dimer

Contact Info

Product

Resources

About