Highly ordered arrangement of meso-tetrakis(4-aminophenyl)porphyrin in self-assembled nanoaggregates via hydrogen bonding

Liu, Qingyun; Jia, Qingyan; Zhu, Ji-Qin; Shao, Qian; Fan, Jie; Wang, Dongmei; Yin, Yansheng

doi:10.1016/j.cclet.2013.12.023

Cited by 19 publications

(11 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hydrogen-bonding is crucial to achieve the ordered arrangement of meso-tetrakis(4-aminophenyl)porphyrin 4 (Figure 3a) in different nanostructures as reported by Yin et al, who generated nanospheres, nanorods, and nanothorns by modifying porphyrin concentration and using the phase-transfer method [34]. Typically, assemblies were made by rapidly adding 1 mL of methanol to 4 mL of the chloroform porphyrin solutions at different concentrations ranging from 5 × 10 − 4 to 1.5 × 10 − 3 M, and stored for three days to have stable nanosystems for morphological analyses by Transmission and Scanning Electron Microscopies (TEM and SEM, respectively).…”

Section: Solvent-driven Aggregation Protocolmentioning

confidence: 98%

The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

et al. 2019

View full text Add to dashboard Cite

The interest in assembling porphyrin derivatives is widespread and is accounted by the impressive impact of these suprastructures of controlled size and shapes in many applications from nanomedicine and sensors to photocatalysis and optoelectronics. The massive use of porphyrin dyes as molecular building blocks of functional materials at different length scales relies on the interdependent pair properties, consisting of their chemical stability/synthetic versatility and their quite unique physicochemical properties. Remarkably, the driven spatial arrangement of these platforms in well-defined suprastructures can synergically amplify the already excellent properties of the individual monomers, improving conjugation and enlarging the intensity of the absorption range of visible light, or forming an internal electric field exploitable in light-harvesting and charge-and energy-transport processes. The countless potentialities offered by these systems means that self-assembly concepts and tools are constantly explored, as confirmed by the significant number of published articles related to porphyrin assemblies in the 2015–2019 period, which is the focus of this review.

show abstract

Section: Solvent-driven Aggregation Protocolmentioning

confidence: 98%

The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

et al. 2019

View full text Add to dashboard Cite

show abstract

“…At last, 30% epoxy resin solution was added to embed the cells. The ultrathin slices were analyzed by high-resolution transmission electron microscopy (HRTEM, H-7650, Hitachi, Tokyo, Japan) [57,58,[62][63][64][65], scanning transmission microscopy (STEM, Tecnai G 2 F20, FEI, Hillsboro, OR, USA) and EDS. The parameters of these instruments are given in articles [66][67][68][69][70].…”

Section: Analysis Of the Ultrathin Slices Of B Licheniformismentioning

confidence: 99%

Extracellular and Intracellular Biomineralization Induced by Bacillus licheniformis DB1-9 at Different Mg/Ca Molar Ratios

et al. 2018

View full text Add to dashboard Cite

Biomineralization has become a research hotspot and attracted widespread attention in the field of carbonate sedimentology. In this study, precipitation of carbonate minerals was induced by Bacillus licheniformis DB1-9 bacteria, (identity confirmed with its phylogenetic tree), to further explore the biomineralization mechanisms. During experiments, lasting up to 24 days with varying Mg/Ca molar ratios and regular monitoring of conditions, ammonia and carbonic anhydrase are released by the bacteria, resulting in a pH increase. Carbonic anhydrase could have promoted carbon dioxide hydration to produce bicarbonate and carbonate ions, and so promoted supersaturation to facilitate the precipitation of carbonate minerals. These include rhombohedral, dumbbell-shaped, and elongated calcite crystals; aragonite appears in the form of mineral aggregates. In addition, spheroidal and fusiform minerals are precipitated. FTIR results show there are organic functional groups, such as C–O–C and C=O, as well as the characteristic peaks of calcite and aragonite; these indicate that there is a close relationship between the bacteria and the minerals. Ultrathin slices of the bacteria analyzed by HRTEM, SAED, EDS, and STEM show that precipitate within the extracellular polymeric substances (EPS) has a poor crystal structure, and intracellular granular areas have no crystal structure. Fluorescence intensity and STEM results show that calcium ions can be transported from the outside to the inside of the cells. This study provides further insights to our understanding of biomineralization mechanisms induced by microorganisms.

show abstract

“…In the process of biomineralization of carbonate minerals, 10 mL of S. epidermidis Y2 bacterial liquid was centrifuged at a speed of 3000 rpm for 5 min, the pellet including the minerals and the bacteria was washed 3 times with phosphate buffer (Na2HPO4•12H2O 20.7472 g L -1 , NaH2PO4•2H2O 3.1167 g L -1 , pH 7.2) to remove the ingredients from the culture medium. The pellet was fixed by glutaraldehyde (2.5%, v : v) for a night, then dehydrated gradually by acetone solution: 30% ( [87,[92][93][94], SAED [86] and STEM (Tecnai G2 F20, FEI, America) [95].…”

Section: Analysis Of the Nano-meter Spheres And Element Distribution mentioning

confidence: 99%

The Significant Role of Different Magnesium: Carbonate Minerals Induced by Moderate Halophile <em>Staphylococcus epidermis</em> Y2

Han¹,

Yu²,

Zhao³

et al. 2018

Preprint

View full text Add to dashboard Cite

Carbonate precipitation induced by microorganism has become a hot spot in the field of carbonate sedimentology, while the effect of different magnesium on biominerals has rarely been studied. Therefore, magnesium sulfate and magnesium chloride were used to investigate the significant role played on carbonate minerals. In this study, Staphylococcus epidermidis Y2 was isolated and identified by 16S rDNA homology comparison. The ammonia, pH, carbonic anhydrase, carbonate and bicarbonate ions were investigated. The mineral phase, morphology and elemental composition were analyzed by XRD and SEM-EDS. The ultrathin slices of bacteria were analyzed by HRTEM-SAED and STEM. The result showed that this bacterium could release ammonia and carbonic anhydrase to increase pH, and elevate the supersaturation via a large number of carbonate and bicarbonate ions released through carbon dioxide hydration catalyzed by carbonic anhydrase. The crystal cell density of monohydrocalcite was lower in magnesium chloride medium than that in magnesium sulfate medium. The crystal grew in a mode of spiral staircas in magnesium sulfate medium, while in a concentric circular pattern in magnesium chloride medium. There was no obvious intracellular biomineralization. This study may be helpful to further understand the biomineralization mechanism, may also provide some references for the reconstruction of paleogeological environment.

show abstract

Highly ordered arrangement of meso-tetrakis(4-aminophenyl)porphyrin in self-assembled nanoaggregates via hydrogen bonding

Cited by 19 publications

References 39 publications

The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

Extracellular and Intracellular Biomineralization Induced by Bacillus licheniformis DB1-9 at Different Mg/Ca Molar Ratios

The Significant Role of Different Magnesium: Carbonate Minerals Induced by Moderate Halophile <em>Staphylococcus epidermis</em> Y2

Contact Info

Product

Resources

About