Amphiphilic spherical nanoparticles with a nitrogen-enriched carbon-like surface by using β-lactoglobulin as a template

Khan, M. Nuruzzaman; Orimoto, Yoshifumi; Ihara, Hirotaka

doi:10.1039/c8cc07532h

Cited by 8 publications

(5 citation statements)

References 28 publications

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“…Process I with microwave heating: The procedure is as follows: 1 g of porous silica (YMC SIL-120-S5) and 8 mL of 2-propanol were mixed in the reaction vessel of the micro-wave synthesizer (Monowave 300, Anton Paar Gmbh, Graz, Austria) [ 41 , 42 , 43 ], and then the mixture was dispersed for 1 min using an ultrasonic bath (SONO CLEANER 100D, Kaijo Corporation, Osaka, Japan). Thereafter, 89.7 mg (0.56 mmol) of DHN and 72.4 mg (0.56 mmol) of TMTA were added to the dispersed mixture, and then the mixture underwent ultrasonication.…”

Section: Methodsmentioning

confidence: 99%

Fabrication of Carbon-Like, π-Conjugated Organic Layer on a Nano-Porous Silica Surface

et al. 2020

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This paper presents a new type of black organic material-porous silica composite providing an extremely highly selective adsorption surface. This black composite was prepared by lamination on nano-sized pores with a carbon-like, π-extended structure, which can be converted via the on-site polymerization of 1,5-dihydroxynaphthalene with a triazinane derivative and a thermally induced condensation reaction with denitrification. This bottom-up fabrication method on porous materials had the great advantage of maintaining the pore characteristics of a raw porous material, but also the resultant black surface exhibited an extremely high molecular-shape selectivity; for example, that for trans- and cis-stilbenes reached 14.0 with the black layer-laminated porous silica, whereas it was below 1.2 with simple hydrophobized silica.

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Section: Methodsmentioning

confidence: 99%

Fabrication of Carbon-Like, π-Conjugated Organic Layer on a Nano-Porous Silica Surface

et al. 2020

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“…As ab asis for estimating the formation of a cross-linked structure, it can be noted that there are multiple reactions ites in monomers. In the case of DHA (Scheme 1), there are four active points present at the C-1, C-3, C-5 and C-7a toms and they are located next to the phenoxy group; thus, the cross-linker,-CH 2 N(CH 3 )CH 2 -a st he active species, [17] can be assumed to react with the anthracene ring at multiple positions. Table 2s hows the elemental analysiso ft he DHAbased nanoparticles.…”

Section: Fundamental Characterization Of Nanoparticlesmentioning

confidence: 99%

Emission‐Color Control in Polymer Films by Memorized Fluorescence Solvatochromism in a New Class of Totally Organic Fluorescent Nanogel Particles

Yamada

Noguchi

Orimoto

et al. 2019

Chemistry A European J

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In this work, a new class of totally organic fluorescent nanogel particles and their exceptionally specific behaviors based on their unique structures are introduced, which draws a sharp line from conventional fluorophore‐doped and fluorophore‐branched‐type particles. The nanogel particles, the diameter of which could be controlled by adjusting reaction conditions, such as the solvent system, were spontaneously fabricated with a spherical shape by direct polymerization of non‐heterocyclic aromatic compounds, such as 2,6‐dihydroxyanthracene, 2,6‐dihydroxynaphthalene, and 9,9‐bis(4‐hydroxyphenyl)fluorene with triazinane as the cross‐linker. A fluorophoric moiety formed from a polymer main chain was realized in the particle, and consequently, the resultant content of the fluorophoric moiety was around 70–80 wt % per particle. The uniqueness and versatility of the particles can be emphasized by their good compatibility with various solvents due to their amphiphilic and ampholytic swelling properties, but also by their remarkable fluorescent solvatochromism in the dispersion state. Furthermore, these behaviors were preserved even in their polymer composite system. This study also demonstrates that various fluorescent polymer films can be fabricated with emission color control due to memorization of the solvatochromism phenomenon of the dispersed fluorescent nanoparticles.

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“…The formation of the polymer was accompanied by an important modification in the absorbance which extended to >600 nm following polymerization. 35 After polymerization, the CD signal of HNHs increased significantly compared to the DHN-doped HNHs (Fig. 4b).…”

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confidence: 93%

“…4). 35,36 In addition to being compatible with the HNHs, this polymer was previously shown to be a promising precursor for nitrogen-rich carbon material. Following ion exchange from tartrate to DHN, the HNHs were pinkish and showed an absorption maximum at 228 nm (Fig.…”

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Sequential chiral induction between organic and inorganic supramolecular helical assemblies for the in situ formation of chiral carbon dots

et al. 2023

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Amphiphilic spherical nanoparticles with a nitrogen-enriched carbon-like surface by using β-lactoglobulin as a template

Abstract: A new class of nitrogen-enriched carbon-like nanoparticles and their facile preparation method using size controlled protein aggregates as nano-templates.

Cited by 8 publications

References 28 publications

Fabrication of Carbon-Like, π-Conjugated Organic Layer on a Nano-Porous Silica Surface

Fabrication of Carbon-Like, π-Conjugated Organic Layer on a Nano-Porous Silica Surface

Emission‐Color Control in Polymer Films by Memorized Fluorescence Solvatochromism in a New Class of Totally Organic Fluorescent Nanogel Particles

Sequential chiral induction between organic and inorganic supramolecular helical assemblies for the in situ formation of chiral carbon dots

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