Photo‐ and pH‐Tunable Multicolor Fluorescent Nanoparticle‐Based Spiropyran‐ and BODIPY‐Conjugated Polymer with Graphene Oxide

Sharker, Shazid Md.; Jeong, Chan Jin; Kim, Sung Min; Lee, Jung-Eun; Jeong, Ji Hoon; In, Insik; Lee, Haeshin; Park, Soo Jung

doi:10.1002/asia.201402399

Cited by 52 publications

(39 citation statements)

References 30 publications

(30 reference statements)

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“…S. Sharker developed a stimuli-responsive material based on graphene oxide cou- pled with a polymer conjugated with spiropyran dye and hydrophobic boron dipyrromethane dye, for application in triggered target multicolor bioimaging. [208] The different color of the functionalized graphene oxide is induced by both irradiation with UV light and by changing the pH from acidic to neutral. The stability, biocompatibility, and quenching efficacy of this nanocomposite open a different perspective for cell imaging in different independent colors, sequentially and simultaneously.…”

Section: Figure 12mentioning

confidence: 99%

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

249

116

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Research on hybrid inorganic‐organic materials has experienced an explosive growth since the 1980s, with the expansion of soft inorganic chemistry based processes. Indeed, mild synthetic conditions, low processing temperatures provided by “chimie douce” and the versatility of the colloidal state allow for the mixing of the organic and inorganic components at the nanometer scale in virtually any ratio to produce the so called hybrid materials. Today a high degree of control over both composition and nanostructure of these hybrids can be achieved allowing tunable structure‐property relationships. This, in turn, makes it possible to tailor and fine‐tune many properties (mechanical, optical, electronic, thermal, chemical…) in very broad ranges, and to design specific multifunctional systems for applications. In particular, the field of “Hybrid‐Optics” has been very productive not only scientifically but also in terms of applications. Indeed, numerous optical devices based on hybrids are already in, or very close, to the market. This review describes most of the recent advances performed in this field. Emphasis will be given to luminescent, photochromic, NLO and plasmonic properties. As an outlook we show that the controlled coupling between plasmonics and luminescence is opening a land of opportunities in the field of “Hybrid‐Optics”.

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Section: Figure 12mentioning

confidence: 99%

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

249

116

View full text Add to dashboard Cite

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“…5,[16][17][18] The synthetic routes reported for producing FNPs from pDA employ controlled carbonization in a strongly acidic environment for a predetermined period. 12 This synthetic strategy was xed to retain dopamine moieties on the prepared FNPs.…”

Section: Resultsmentioning

confidence: 99%

Photothermal conversion upon near-infrared irradiation of fluorescent carbon nanoparticles formed from carbonized polydopamine

et al. 2016

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Fluorescence and photothermal conversion mediated by near-infrared radiation (NIR) is reported for carbonized polydopamine nanoparticles. Carbonized polydopamine demonstrated excitation-dependent fluorescence emission, together with NIR-responsive photothermal conversion properties. The concentration-dependent photothermal heating from carbonized fluorescent carbon nanoparticlespolydopamine (FNP-pDA) induces hyperthermal killing of both cancer cell lines and bacteria in vitro. Although most of the dopamine moieties of polydopamine become dehydrated upon carbonization, the remaining dopamine-hydroxyl groups can confer adhesive properties. These fluorescent coatings are compatible with many substrates, and the surface passivation of FNP-pDA with polyethylene glycol improves quantum yield and extends fluorescence lifetimes. The novel infrared-responsive photothermal and fluorescent carbon nanoparticles reported here show promise for a range of potential biomedical and research applications.

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“…Under mild alkaline conditions, catechol compounds can modify surfaces by forming a network through cross-linking as well as oxidized to form o-quinone, which can subsequently react with various functional groups via Michael addition or Schiff's base reactions. [16][17][18] To make adhesive antibacterial coating, the quaternary ammonium compounds having long alkyl chains posses significant bacterial protection activity. Although the mechanism of action of such quaternary ammonium compounds is not yet clear, however, they primarily act by increasing cellular permeability, thereby contributing to destruction of cell membranes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and antibacterial activity of surface‐coated catechol‐conjugated polymer with silver nanoparticles on versatile substrate

Kim

Lee

et al. 2016

Surface & Interface Analysis

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In the present study, 2-chloro-3′,4′-dihydroxyacetophenone (CCDP), a catechol derivative, was quaternized with poly(propylene oxide)-g-poly(dimethylaminoethyl methacrylate) (PPO-g-PDMA, PgP) to prepare surface coatings for various substrates. The surfaces of noble metals, oxides, and synthetic polymers were coated by immersion in an aqueous solution of CCDP quaternized with PgP (C-PgP). The catechol functional groups that remained on the surface were used for deposition of Ag nanoparticles (AgNPs) on the coated surface, to provide a water-resistant antibacterial polymer with long-term antimicrobial activity. X-ray photoelectron spectroscopy confirmed deposition of C-PgP and AgNPs on the surface coated with the antibacterial polymer. Surfaceimmobilized C-PgP/AgNPs showed outstanding antibacterial activities against Staphylococcus aureus, a Gram-positive bacterium, and Escherichia coli, a Gram-negative bacterium. C-PgP/AgNPs can be applied to a variety of substrates and can therefore be used as antibacterial materials in various fields.

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Photo‐ and pH‐Tunable Multicolor Fluorescent Nanoparticle‐Based Spiropyran‐ and BODIPY‐Conjugated Polymer with Graphene Oxide

Cited by 52 publications

References 30 publications

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Photothermal conversion upon near-infrared irradiation of fluorescent carbon nanoparticles formed from carbonized polydopamine

Synthesis and antibacterial activity of surface‐coated catechol‐conjugated polymer with silver nanoparticles on versatile substrate

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