Chang Eun Song

Korea Research Institute of Chemical Technology

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i-10 index

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Co-Authors

Won Suk Shin

Korea Research Institute of Chemical Technology

Sang Kyu Lee

Korea University of Science and Technology

Jong‐Cheol Lee

Korea University of Science and Technology

Sang‐Jin Moon

Korea Research Institute of Chemical Technology

Du Hyeon Ryu

Korea Research Institute of Chemical Technology

Hang Ken Lee

Korea Research Institute of Chemical Technology

In‐Nam Kang

Catholic University of Korea

Do‐Hoon Hwang

Pusan National University

Eunhee Lim

University of Seoul

Sora Oh

Korea Research Institute of Chemical Technology

Cooperative Institutions

Sichuan University

156

West China Hospital of Sichuan University

124

Government of the Republic of Korea

118

Korea Research Institute of Chemical Technology

Chinese Academy of Sciences

The George Institute for Global Health

UNSW Sydney

Korea Advanced Institute of Science and Technology

Daejeon University

George Institute for Global Health

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Synthesis and Characterization of a Soluble A–D–A Molecule Containing a 2D Conjugated Selenophene‐Based Side Group for Organic Solar Cells

Macromolecular Rapid Communications (2017)

Yurim Shin Chang Eun Song Woo‐Hyung Lee Sang Kyu Lee Won Suk Shin

A new acceptor-donor-acceptor (A-D-A) small molecule based on benzodithiophene (BDT) and diketopyrrolopyrrole (DPP) is synthesized via a Stille cross-coupling reaction. A highly conjugated selenophene-based side group is incorporated into each BDT unit to generate a 2D soluble small molecule (SeBDT-DPP). SeBDT-DPP thin films produce two distinct absorption peaks. The shorter wavelength absorption (400 nm) is attributed to the BDT units containing conjugated selenophene-based side groups, and the longer wavelength band is due to the intramolecular charge transfer between the BDT donor and the DPP acceptor. SeBDT-DPP thin films can harvest a broad solar spectrum covering the range 350-750 nm and have a low bandgap energy of 1.63 eV. Solution-processed field-effect transistors fabricated with this small molecule exhibit p-type organic thin film transistor characteristics, and the field-effect mobility of a SeBDT-DPP device is measured to be 2.3 × 10-3 cm2 V-1 s-1 . A small molecule solar cell device is prepared by using SeBDT-DPP as the active layer is found to exhibit a power conversion efficiency of 5.04% under AM 1.5 G (100 mW cm-2 ) conditions.

Side chain

Pendant group

Characterization

Organic molecules

10.1002/marc.201700016

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Citations (9)

Dexmedetomidine Alleviates Propofol Infusion Syndrome-Induced Myocardial Injury through Inhibiting Ferroptosis Associated with Accumulation of Reactive Oxygen Species.

PubMed (2024)

Jinhui Sun Bing Zhang Qiang Geng Jiayinati Halimujiang Chang Eun Song

To observe the effect of dexmedetomidine (Dex) on propofol infusion syndrome (PRIS)-induced myocardial injury and explore the roles of ferroptosis and accumulation of reactive oxygen species (ROS).

Dexmedetomidine

Cardiotoxicity

Source

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Citations (0)

Alkylated Indacenodithiophene-Based Non-fullerene Acceptors with Extended π-Conjugation for High-Performance Large-Area Organic Solar Cells

ACS Applied Materials & Interfaces (2020)

Hee Su Kim Shafket Rasool Won Suk Shin Chang Eun Song Do‐Hoon Hwang

In this work, a series of A-D-A'-D-A-type electron acceptors based on alkylated indacenodithiophene (C8IDT), dicyanated thiophene-flanked 2,1,3-benzothiadiazole (CNDTBT), and 2-(3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (INCN) or 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene) malononitrile (FINCN) are synthesized in order to investigate the effect of substituents on their photovoltaic properties. The corresponding CNDTBT-C8IDT-INCN and CNDTBT-C8IDT-FINCN acceptors vary in their optical, electrochemical, morphological, and charge transport properties. The fluorinated-INCN-based acceptor (CNDTBT-C8IDT-FINCN) exhibits lower energy levels, improved absorptivity, narrower π-π spacing, and prominent fibrillar structures when it is blended with poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b']dithiophene))-alt-5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl)benzo [1',2'-c:4',5'-c']dithiophene-4,8-dione)] (PBDB-T). CNDTBT-C8IDT-FINCN exhibits a high power conversion efficiency (PCE) of 12.33% due to its high and well-balanced charge carrier mobility and distinct face-on orientation. Furthermore, large-area organic solar cells (OSCs) (active area: 55.45 cm2) with CNDTBT-C8IDT-FINCN exhibit a high PCE of 9.21%. This result demonstrates that CNDTBT-C8IDT-FINCN is a suitable and promising electron acceptor for large-area OSCs.

Acceptor

Electron acceptor

Electron donor

10.1021/acsami.0c13277

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Citations (20)

Desymmetrization of Meso Anhydrides

Synfacts (2008)

Stephen J. Connon Jason W. Chin Chang Eun Song

Desymmetrizations of meso anhydrides catalyzed by a cinchona alkaloid bearing a thiourea moiety are reported. Bifunctional catalyst 1 mediates the methanolysis of succinic and glutaric anhydrides 2 to give hemiesters 3 in good yields and enantioselectivities. The reactions are carried out in coordinating solvents at unusually low concentrations to prevent the dimerization or aggregation of catalyst 1 through hydrogen bonding. Its monomeric form is presumably responsible for high enantioselectivities.

Desymmetrization

Cinchona

Moiety

10.1055/s-2008-1072681

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Citations (0)

Thieno[3,4-<I>b</I>]pyrazine-Based Copolymers and Their Application in Polymer Solar Cells

Science of Advanced Materials (2016)

Thi Thu Trang Bui Chang Eun Song Sangheon Park Jong‐Cheol Lee Sang Kyu Lee

Pyrazine

10.1166/sam.2016.2524

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Citations (3)

Rhodanine dye-based small molecule acceptors for organic photovoltaic cells

Chemical Communications (2014)

Yujeong Kim Chang Eun Song Sang‐Jin Moon Eunhee Lim

Two small molecule acceptors, composed of carbazole or fluorene cores and rhodanine dye ends, were synthesized and their high OPV performances up to 3.08% were demonstrated.

Rhodanine

Carbazole

10.1039/c4cc01695e

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Citations (124)

Efficiency enhancement of a fluorinated wide-bandgap polymer for ternary nonfullerene organic solar cells

Polymer (2019)

Chang Eun Song Hyobin Ham Jiwoong Noh Sang Kyu Lee In‐Nam Kang

HOMO/LUMO

Open-circuit voltage

10.1016/j.polymer.2019.122131

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Citations (11)

High glucose reduces expression of podocin in cultured human podocytes by stimulating TRPC6

AJP Renal Physiology (2019)

Xiaoyu Lu Bingchen Liu Yuze Cao Chang Eun Song Hua Su

The transient receptor potential canonical 6 (TRPC6) channel and podocin are colocalized in the glomerular slit diaphragm as an important complex to maintain podocyte function. Gain of TRPC6 function and loss of podocin function induce podocyte injury. We have previously shown that high glucose induces apoptosis of podocytes by activating TRPC6; however, whether the activated TRPC6 can alter podocin expression remains unknown. Western blot analysis and confocal microscopy were used to examine both expression levels of TRPC6, podocin, and nephrin and morphological changes of podocytes in response to high glucose. High glucose increased the expression of TRPC6 but reduced the expression of podocin and nephrin, in both cultured human podocytes and type 1 diabetic rat kidneys. The decreased podocin was diminished in TRPC6 knockdown podocytes. High glucose elevated intracellular Ca2+ in control podocytes but not in TRPC6 knockdown podocytes. High glucose also elevated the expression of a tight junction protein, zonula occludens-1, and induced the redistribution of zonula occludens-1 and loss of podocyte processes. These data together suggest that high glucose reduces protein levels of podocin by activating TRPC6 and induces morphological changes of cultured podocytes.

Podocin

Nephrin

TRPC6

Slit diaphragm

10.1152/ajprenal.00215.2019

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Citations (18)

Optimized vertical phase separation via systematic Y6 inner side-chain modulation for non-halogen solvent processed inverted organic solar cells

Nano Energy (2022)

Zaheer Abbas Seung Un Ryu Muhammad Haris Chang Eun Song Hang Ken Lee

Organic semiconductor

Side chain

10.1016/j.nanoen.2022.107574

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Citations (65)

A non-fullerene acceptor with a diagnostic morphological handle for streamlined screening of donor materials in organic solar cells

Journal of Materials Chemistry A (2017)

Seth M. McAfee Abby‐Jo Payne Sergey Dayneko Gururaj P. Kini Chang Eun Song

Utilizing the N-annulated PDI acceptor PDI–DPP–PDI, a simple air-processed and air-tested organic photovoltaic device fabrication procedure has been established to streamline the screening of donor materials.

Acceptor

10.1039/c7ta05282k

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Citations (43)