Use of the self-assembly of tyrosine-containing bolaamphiphile molecules as a reactive template for metal deposition

Kwak, Jinyoung; Park, Soo In; Lee, Sang Yup

doi:10.1016/j.colsurfb.2012.07.038

Cited by 20 publications

(21 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shape of TyrBA was observed through electron microscopy in the presence of both the photosensitizer ([Ru(bpy) 3 Cl 2 ]) and the electron acceptor ([Co(NH 3 ) 5 Cl]Cl 2 ). The size of TyrBA was (85±5) nm in diameter with an indistinct boundary (Figure b), whereas intact TyrBA had a spherical structure with a smooth, well‐defined boundary (Figure c and Figure S2 in the Supporting Information) . The uneven boundary of TyrBA in the PSII mimetic system was presumably produced by aggregation of photosensitizer and/or electron acceptor molecules during sample preparation.…”

Section: Resultssupporting

confidence: 56%

“…Aside from the tyrosine–photosensitizer conjugates, a tyrosine‐rich solid matrix is a promising platform for the preparation of a PSII mimetic system. We recently reported that tyrosyl bolaamphiphile assembly (TyrBA) could yield a proteinaceous nanoscale solid matrix with the exposure of densely packed tyrosine phenol groups on the surface . TyrBA displayed biochemical activities of the tyrosine phenol groups and exhibited outstanding mechanical strength that originated from intermolecular interactions, such as hydrophobic interactions and hydrogen bonds.…”

Section: Introductionmentioning

confidence: 73%

“…We recently reported that tyrosyl bolaamphiphile assembly (TyrBA) could yield ap roteinaceous nanoscale solid matrixw ith the exposure of densely packed tyrosine phenol groups on the surface. [17,18] TyrBA displayed bio-…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photoinduced Intermolecular Electron Transfer Mediated by the Colloidal Tyrosyl Bolaamphiphile Assembly

Cho

Kwak

et al. 2018

ChemPhysChem

Self Cite

View full text Add to dashboard Cite

The self-assembly of tyrosyl bolaamphiphiles is exploited to create a colloidal protein-like host matrix, upon which sacrificial electron-donor molecules associate to create a photosystem II (PSII) mimetic electron-relay system. This system harnesses the tyrosine phenol groups abundant on the surface of the assemblies to mediate photoinduced intermolecular electron transfer. Compared with the l-tyrosine molecules, the tyrosyl bolaamphiphile assembly facilitates electron transfer from the sacrificial electron donor to the oxidized photosensitizer. The enhanced electron relay is likely to be driven by the host function of the assembly associated with the sacrificial electron donor and by the suppression of the oxidative cross-linking of phenoxyl radicals. The tyrosyl bolaamphiphile assembly is advantageous in the construction of a PSII mimetic system with a protein-like nature and displaying biochemical functions.

show abstract

Section: Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 73%

See 1 more Smart Citation

Photoinduced Intermolecular Electron Transfer Mediated by the Colloidal Tyrosyl Bolaamphiphile Assembly

Cho

Kwak

et al. 2018

ChemPhysChem

Self Cite

View full text Add to dashboard Cite

show abstract

“…The nonuniformity of the bolaamphiphile self-assembly implied that the self-organization of the His-C7 was not strongly regulated by intermolecular forces, presumably because of the rather weak polarity of histidine. The histidine imidazole is less polar and its driving force of self-assembly is not strong compared to other peptidic bolaamphiphiles that form well-organized structures [14]. It is also noticeable that the presence of other transition metal ion (i.e., Cd 2+ and Ni 2+ ) did not alter the shape of self-assembly, although another transition metal ion of Cu 2+ is known to bind histidine imidazoles, thereby influencing the morphology of histidyl bolaamphiphile self-assembly [15].…”

Section: Characterization Of Transition Metal-associated Bolaamphiphimentioning

confidence: 99%

Effects of transition metal ions on the catalytic activity of carbonic anhydrase mimics

Keum

Kim

Lee

2015

Journal of Molecular Catalysis A: Chemical

Self Cite

View full text Add to dashboard Cite

“…Detailed synthetic protocols of each peptidic bolaamphiphile are reported in the literature. 13,18 Briefly, the amino acid C-termini of histidine and tyrosine were modified to benzyl ester moieties and were then conjugated with azelaic acid through amide bonds. The crude products of the peptidic bolaamphiphiles were purified by repeating crystallization to produce powdered products.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Biomimetic Catalytic and Sensing Cascades Built with Two Designer Bolaamphiphilic Self-Assemblies

Kwak

Kim

Lee

2015

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

A system performing both a catalytic hydrolysis reaction and the direct optical monitoring of the product was created by the combination of two bolaamphiphile self-assemblies. Two bolaamphiphilic self-assemblies were applied as a biomimetic catalyst of p-nitrophenyl acetate (p-NPA) hydrolysis and an optical sensor probe that detects p-NPA hydrolysis through photoluminescence quenching by p-nitrophenol (p-NP), the product of p-NPA hydrolysis. One bolaamphiphilic self-assembly with a histidine moiety catalytically hydrolyzed the p-NPA substrate, and the other self-assembly of tyrosyl bolaamphiphile monitored the product of p-NP by photoluminescence quenching. The progression of the reaction and quenching degree were adjusted by controlling the quantity of histidyl and tyrosyl self-assemblies, respectively. The reaction and subsequent sensing cascade could be interrupted by a reducing agent. The addition of NaBH4 induced the chemical conversion of p-NP to p-aminophenol, which retarded photoluminescence quenching. Thus, it was demonstrated that hydrolysis of an organic substrate and subsequent monitoring of the hydrolysis reaction could be achieved through a combination of independent bolaamphiphilic self-assemblies. This study demonstrated the construction of a catalytic reaction and detection system incorporating designer biomimetic self-assemblies whose functionalities were devised to realize deliberate functions.

show abstract

Use of the self-assembly of tyrosine-containing bolaamphiphile molecules as a reactive template for metal deposition

Cited by 20 publications

References 44 publications

Photoinduced Intermolecular Electron Transfer Mediated by the Colloidal Tyrosyl Bolaamphiphile Assembly

Photoinduced Intermolecular Electron Transfer Mediated by the Colloidal Tyrosyl Bolaamphiphile Assembly

Effects of transition metal ions on the catalytic activity of carbonic anhydrase mimics

Biomimetic Catalytic and Sensing Cascades Built with Two Designer Bolaamphiphilic Self-Assemblies

Contact Info

Product

Resources

About