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EACON 2020

EurAsian Conference on Nanophotonics

April 6 – 9, 2020 / Jena, Germany

Chi-How Peng

Department of Chemistry, National Tsing Hua University, 30013 Hsinchu, TAIWAN

Cobalt mediated controlled/living radical polymerization: from mechanism understanding to materials application

Cobalt mediated radical polymerization (CMRP) is famous by controlling the radical polymerization of unconjugated monomers particularly for vinyl acetate (VAc). Given by the understanding to the mechanism of CMRP, we successfully combined the technologies of CMRP and ATRP (Atom transfer radical polymerization) to solve the issue in direct synthesis of conjugated and unconjugated block copolymers.[1]

In addition to the mechanism study and methodology development, we attempted to expand the application of block copolymers to the fields of materials and drug delivery. The block copolymer of poly(methyl acrylate)-b-poly(vinyl acetate) was obtained by cobalt porphyrin (Co(TMP)) mediated radical polymerization and then was hydrolyzed to poly(acrylic acid)-b-poly(vinyl alcohol) (PAA-b-PVA). The free standing membranes of PAA-b-PVA surprisingly own a much higher tensile strain (> 600%) than those made by homopolymers and polymer blends. A series of studies using cross-section SEM images, IR spectrum, and SAXS indicated that the formation of nanostructure in the block copolymers prescribed a considerably larger amount of interface which could enhance the tensile properties drastically.[2]A core-corona micelles formed from the triblock copolymer of poly(ethylene glycol)-b-poly(N,N-dimethylamino-2-ethylmethacrylate)-b-poly(pyrenylmethyl methacrylate) (PEG-b-PDMAEMA-b-PPy) that undergo trinity-phase transition in response to light- and pH-stimuli. These triblock copolymer micelles can carry the siRNA with high stability in physiological condition and efficiently release the siRNA after the light irradiation. The nano-structural transformation was investigated to rationalize the high contrast between the stability and release efficiency before and after the photo irradiation.[3]

Applications of block copolymers in materials and drug delivery.


  1. Chen,Y.-J.; Wu, B.-J.; Wang, F.-S.; Chi, M.-H.; Chen, J.-T.; Peng, C.-H. Macromolecules 2015, 48(19), 6832.
  2. Wang, F.-S.; Wang, T.-F.; Lu, H.-H.; Ao-Ieong, W.-S.; Wang, J.; Chen, H.-L.; Peng, C.-H. Macromolecules 2017, 50, 6054.
  3. Lu, H.-H.; Huang, C.-H.; Shiue, T.-Y.; Wang, F.-S.; Chang, K.-K.; Chen, Y.; Peng, C.-H. Chem. Sci. 2019, 10, 284.

Further Talks

Andrea Csáki

Microfludic Synthesis of plasmonic Nanoparticles for Sensing Applications

Andrey Turchanin

Controlled growth of transition metal dichalcogenide monolayers for applications in nanoelectronic and nanophotonic devices

Chi Chen

Near Field Spectroscopic Imaging: from Hard to Soft Materials

Chi-How Peng

Cobalt mediated controlled/living radical polymerization: from mechanism understanding to materials application

Chun-Hong Kuo

Bridging Energy and Chemistry via Nanoarchitectonic Engineering at Atomic Scale

Falk Eilenberger

Integration of two-dimensional materials in optical systems for nonlinear optics, sensing, and single photon sources

Frank Setzpfandt

Nonlinear frequency conversion in nanostructured optical systems for application in quantum photonics

Heng-Liang Wu

Controlling the Oxidation State of Cu Electrode and Reaction Intermediates for Electrochemical CO2 Reduction to Ethylene

Kien-Voon Kong

Direct Observation of Reaction Intermediates of Metal-based Therapeutic Agents in Single Living Cell Using TERS

Maria Wächtler

Quantum confined semiconductor nanostructures in light-driven catalysis

Martin Presselt

Supramolecular Control of Optical and Electronical Properties of Two-Dimensional Dye Layers

Po-Chiao Lin

New Environment Sensitive Fluorophores with Color-Tailored Emission: In Vivo Monitoring of Carbonic Anhydrases Expression on Growth of Larval Zebrafish

Shangjr (Felix) Gwo

Plasmonic Metasurface-Enhanced Linear and Nonlinear Processes in Two-Dimensional Semiconductors

Ta-Jen Yen

Empowering Bilayer MoS2 by Engineered Plasmonic Nanostructures for Optoelectronic Applications

Tiow-Gan Ong

Carbodicarbene, Carbogenic Maverick, Not a Moderate!

Volker Deckert

Plasmon Enhanced Probe Spectroscopies – Structural Investigation of Nanoscale Objects

Yi-Tsu Chan

Molecular self-assembly methodology for rational construction of metallosupramolecules with high structural complexity

Yian Tai

Toward a universal polymeric material for electrode buffer layers in organic optoelectronics

Yu-Chieh Cheng

Kirigami-based soft robots with light-responsive properties

Yu-Jung Lu

Controlling Light-matter Interactions at Nanoscale with Plasmonics: From Spontaneous Emission to Lasing