A5047112739- Advanced Polymer Synthesis and Characterization
- Organometallic Complex Synthesis and Catalysis
- Nanoparticle-Based Drug Delivery
- Synthetic Organic Chemistry Methods
- biodegradable polymer synthesis and properties
- Coordination Chemistry and Organometallics
- Synthesis and properties of polymers
- Nanoplatforms for cancer theranostics
- Ion channel regulation and function
- Quinazolinone synthesis and applications
- Polymer crystallization and properties
- Luminescence and Fluorescent Materials
- Iron oxide chemistry and applications
- Fuel Cells and Related Materials
- Synthesis and Biological Evaluation
- Nanomaterials for catalytic reactions
- Molecular Sensors and Ion Detection
- Dendrimers and Hyperbranched Polymers
- Chemical synthesis and alkaloids
- Fluorine in Organic Chemistry
- Graphene research and applications
- Hydrogels: synthesis, properties, applications
- Toxin Mechanisms and Immunotoxins
- Polymer Nanocomposites and Properties
- Polymer Surface Interaction Studies
Kyung Hee University
2010-2021
Government of the Republic of Korea
2021
Institute for Basic Science
2007-2011
Nongwoo Bio (South Korea)
2010
Korea Institute of Science and Technology
1996-2007
Korea Advanced Institute of Science and Technology
2002
Seoul National University
1999
University of Akron
1990-1996
Hydrogen peroxide (H2O2) is an endogenous molecule that plays diverse physiological and pathological roles in living systems. Here we report multimolecule integrated nanoprobes with the enhanced chemiluminescence (CL) response to H2O2 produced cells vivo. This approach based on nanoscopic coaggregation of a dye exhibiting aggregation-enhanced fluorescence (AEF) H2O2-responsive peroxalate can convert chemical reaction energy into electronic excitation. The coaggregated CL nanoparticles (FPOA...
Phthalocyanine-aggregated Pluronic nanoparticles were constructed as a novel type of near-infrared (NIR) absorber for photothermal therapy. Tiny (~ 60 nm, FPc NPs) prepared by aqueous dispersion phthalocyanine-aggregated self-assembled nanodomains that phase-separated from the melt mixture with Pluronic. Under NIR laser irradiation, NPs manifested robust heat generation capability, superior to an individual cyanine dye and cyanine-aggregated nanoparticles. Micro- macroscopic imaging...
Nanoscopic dense integration between solid-state emission and photochromism provides nanoprobes capable of photoswitching bright NIR fluorescence with high on/off contrast, bistability improved signal identification, being suitable for imaging applications in autofluorescence-rich vivo environments.
Poly(styrene-block-ethylene oxide) (PS–PEO) diblock copolymers have been synthesized with predictable block molecular weights and narrow weight distributions. sec-Butyllithium-initiated polymerization of styrene was effected in benzene solution followed by ω-end-group functionalization ethylene oxide to form the corresponding polymeric lithium alkoxide (PSOLi). Block copolymerization initiated unreactive PSOLi promoted addition dimethylsulfoxide either potassium t-butoxide, t-amyloxide or...
We report a method for universal assembly of multiple nanoparticles with different sizes and compositions on single chemically converted graphene sheet good control over particle in the range 1 to 2 nm through covalent immobilization dendrimer-encapsulated nanoparticles.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnionic synthesis of model ionomers: ι-lithium poly(styrene)sulfonatesRoderic P. Quirk and Jungahn KimCite this: Macromolecules 1991, 24, 16, 4515–4522Publication Date (Print):August 1, 1991Publication History Published online1 May 2002Published inissue 1 August 1991https://pubs.acs.org/doi/10.1021/ma00016a006https://doi.org/10.1021/ma00016a006research-articleACS PublicationsRequest reuse permissionsArticle Views503Altmetric-Citations49LEARN ABOUT...
Abstract A new type of heavy‐atom‐affected Pluronic (F‐127) nanoparticle (FIC NP) for photodynamic therapy (PDT) is reported. FIC NPs are formulated with biocompatible constituents, and contain densely integrated iodinated aromatic molecules that form a structurally rigid core matrix stably encapsulate photosensitizers in monomeric form. Tiny nanoparticles (≈10 nm) prepared by aqueous dispersion photosensitizer‐embedded nanodomains, which self‐assemble phase separation from the melt mixture....
Abstract The results described herein demonstrate the advantages of functionalized initiators with respect to efficiency α-chain-end functionalization and ability effect post-polymerization linking reactions living ω-carbanionic chain ends. Not all are useful, however, because either: (a) they not soluble in hydrocarbon solvents; or (b) reactive enough initiate polymerization at rates which competitive propagation prepare polymers narrow molecular weight distributions controlled weights; (c)...
Abstract Hydrophobically stabilized near‐IR fluorescence from self‐assembled nanoprobes composed of amphiphilic poly(maleic anhydride‐ alt ‐octadec‐1‐ene) (PMAO) and lipophilized squaraine dopants is reported. From comparative studies with varying lipophilicity dyes as well nanoparticulate polymer matrices, it found that dual protection by simultaneous lipophilization the dye‐polymer pair greatly improves chemical stability labile dyes, to produce efficient NIR in physiological aqueous...
Poly(styrene-co-4-tert-butyldimethylsilyloxystyrene) as a precursor of hydroxyl-functionalized syndiotactic polystyrene was successfully synthesized via (η5-indenyl)trichlorotitanium (IndTiCl3)-catalyzed copolymerization styrene with 4-tert-butyldimethylsilyloxystyrene in toluene at 25°C the presence methylaluminoxane (MAO) ([Al]/[Ti] = 2 000). The amount derivative incorporated into polymeric chain for 20,7 : 1 mole feed ratio to found be 1,8 mol-% from 1H NMR analysis. prepared...