Research Highlight

  1. Two Regioisomeric π-Conjugated Small Molecules: Synthesis, Photophysical, Packing and Optoelectronic Properties

    Two Regioisomeric π-Conjugated Small Molecules: Synthesis, Photophysical, Packing and Optoelectronic Properties Dae Hee Lee(박사과정) / Thanh Luan Nguyen(Post doc.) Two regioisomeric D1-A-D-A-D1 type π-conjugated molecules (1,4-bis{5-[4-(5-f...
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  2. Major Electronic Transition Shift from Bandgap to Localized Surface Plasmon Resonance in CdxHg1-xSe Alloy Nanocrystals

    Dongsun Choi(박사과정) / Bitna Yonn(석사과정) CdxHg1-xSe alloy nanocrystals are obtained from CdSe semiconductor nanocrystals via cation exchange. By varying the composition during the exchange process, the CdxHg1-xSe alloy nanocrystals off...
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  3. Rational Design of In Vivo Tau Tangle-Selective Near Infrared Fluorophores: Expanding the BODIPY Universe

    The elucidation of the cause of Alzheimer’s disease remains one of the greatest questions in neurodegenerative research. The lack of highly reliable low-cost sensors to study the structural changes in key proteins during the progres-sion of ...
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  4. Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage

    A new acceptor–donor–acceptor-structured nonfullerene acceptor ITCC (3,9-bis(4-(1,1-dicyanomethylene)-3-methylene-2-oxo-cyclopenta[b]thiophen)-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d′:2,3-d′]-s-indaceno[1,2-b:5,6-b′]-dithiophene) is...
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  5. Ionic effect on the excited-state proton transfer reactions in aqueous solutions

    Proton dissociation (PD) reactions of weak acids and proton transfer (PT) processes in aqueous solution are strongly influenced by ions. However, a detailed molecular picture that describes how ions affect the rates for PD and PT processes i...
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  6. A conductive porous organic polymer with superprotonic conductivity of a Nafion-type electrolyte

    As potential solid electrolytes in fuel cells, porous organic polymers show compelling proton conductivities (up to ∼10−2 S cm−1), but even higher performance is required for real applications. In this work, we prepared a biphenyl-based orga...
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  7. Quantum optical measurements with undetected photons through vacuum field indistinguishability

    Quantum spectroscopy and imaging with undetected idler photons have been demonstrated by measuring one-photon interference between the corresponding entangled signal fields from two spontaneous parametric down conversion (SPDC) crystals. In ...
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  8. Nanoscale Control of Amyloid Self-Assembly Using Protein Phase Transfer by Host-Guest Chemistry

    Amyloid fibrils have recently been highlighted for their diverse applications as functional nanomaterials in modern chemistry. However, tight control to obtain a targeted fibril length with low heterogeneity has not been achieved because of ...
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  9. A Mitochondria-targeted Cryptocyanine-Based Photothermogenic Photosensitizer

    Cryptocyanine-based probes exhibit highly efficient photothermal conversion and represent a new class of photothermal agents for use in photothermal therapy (PTT). With the thermal susceptibility of mitochondria in mind, we have prepared a m...
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  10. Cell imaging: An intracellular dance visualized

    The development of a microscopy technique that enables observation of the interactions between six types of organelle, in 3D and over time, holds promise for improving our understanding of intracellular processes. See Letter p.162 http://ww...
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  11. High-efficiency photovoltaic cells with wide optical band gap polymers based on fluorinated phenylene-alkoxybenzothiadiazole

    A series of semi-crystalline, wide band gap (WBG) photovoltaic polymers were synthesized with varying number and topology of fluorine substituents. To decrease intramolecular charge transfer and to modulate the resulting band gap of D–A type...
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  12. Eco-Friendly Solvent-Processed Fullerene-Free Polymer Solar Cells with over 9.7% Efficiency and Long-Term Performance Stability

    A wide-bandgap polymer, (poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b′]dithiophene))-alt-(2,5-(methyl thiophene carboxylate))]) (3MT-Th), is synthesized to obtain a complementary broad range absorption when harmonized ...
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  13. Iridium-Based Multimetallic Nanoframe@Nanoframe Structure: An Efficient and Robust Electrocatalyst toward Oxygen Evolution Reaction

    Nanoframe electrocatalysts have attracted a great interest due to their inherently high active surface area per a given mass. Although recent progress has enabled the preparation of single nanoframe structures with a variety of morphologies,...
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  14. Formation of Triboelectric Series via Atomic Level Surface Functionalization for Triboelectric Energy Harvesting

    Triboelectric charging involves frictional contact of two different materials, and their contact electrification usually relies on polarity difference in the triboelectric series. This limits the choices of materials for triboelectric contac...
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  15. Overcoming the Limits of Hypoxia in Photodynamic Therapy: A Carbonic Anhydrase IX-Targeted Approach

    A major challenge in photodynamic cancer therapy (PDT) is avoiding PDT-induced hypoxia, which can lead to cancer recurrence and progression through activation of various angiogenic factors and significantly reduce treatment outcomes. Reporte...
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  16. Vibrational Probes: From Small Molecule Solvatochromism Theory and Experiments to Applications in Complex Systems

    The vibrational frequency of a chosen normal mode is one of the most accurately measurable spectroscopic properties of molecules in condensed phases. Accordingly, infrared absorption and Raman scattering spectroscopy have provided valuable ...
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  17. Excellent Long-​Term Stability of Power Conversion Efficiency in Non-​Fullerene-​Based Polymer Solar Cells Bearing Tricyanovinylene-​Functionalized n-​Type Small Molecules

    New small molecules having modified acceptor strength and π-conjugation length and containing dicyanovinylene (DCV) and tricyanovinylene (TCV) as a strongly electron-accepting unit with indacenodithiophene, IDT(DCV)2, IDT(TCV)2, and IDTT(TCV...
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  18. Aziridine-Functionalized Polydimethylsiloxanes for Tailorable Polymeric Scaffolds: Aziridine as a Clickable Moiety for Structural Modification of Materials

    This paper shows that tailorable polymeric scaffolds on a molecular scale could be achieved through the ring opening reaction of a three-membered N-heterocyclic compound, aziridine. Aziridine is incorporated into an elastomeric polymer backb...
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  19. Effect of ion-ligand binding on ion pairing dynamics studied by two-dimensional infrared spectroscopy

    Cation-specific ion pairing dynamics between M+ (M=Ag or Cu) and SCN−in N,N-dimethylthioformamide (DMTF) are studied by vibrationally probing the nitrile (CN) stretching vibration. SCN− ion, which is an ambidentate ligand, readily associates...
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  20. Ultrafast fluxional exchange dynamics in electrolyte solvation sheath of lithium ion battery

    Lithium cation is the charge carrier in lithium-ion battery. Electrolyte solution in lithium-ion battery is usually based on mixed solvents consisting of polar carbonates with different aliphatic chains. Despite various experimental evidence...
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