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  1. Article ; Online: Chain-Length-Dependent Photophysical Properties of α,ω-Di(4-pyridyl)polyenes: Effects of Solvent Polarity, Hydrogen Bond Formation, Protonation, and N-Alkylation.

    Sonoda, Yoriko

    Journal of fluorescence

    2021  Volume 32, Issue 1, Page(s) 95–108

    Abstract: In this study, we investigated the solvent effects on the photophysical properties of α,ω-di(4-pyridyl)polyenes 1-5 having 1-5 double bonds. The solution photoproperties depend strongly on conjugation chain length. The absorption maximum ( ... ...

    Abstract In this study, we investigated the solvent effects on the photophysical properties of α,ω-di(4-pyridyl)polyenes 1-5 having 1-5 double bonds. The solution photoproperties depend strongly on conjugation chain length. The absorption maximum (λ
    Language English
    Publishing date 2021-09-25
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2016892-5
    ISSN 1573-4994 ; 1053-0509
    ISSN (online) 1573-4994
    ISSN 1053-0509
    DOI 10.1007/s10895-021-02824-y
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  2. Article ; Online: Triplet-triplet annihilation photon upconversion from diphenylhexatriene and ring-substituted derivatives in solution.

    Mizokuro, Toshiko / Kamada, Kenji / Sonoda, Yoriko

    Physical chemistry chemical physics : PCCP

    2022  Volume 24, Issue 19, Page(s) 11520–11526

    Abstract: We report that diphenylhexatriene (DPH) and its ring-substituted derivatives act as emitter molecules in triplet-triplet annihilation photon upconversion (TTA-UC). A palladium porphyrin derivative, ...

    Abstract We report that diphenylhexatriene (DPH) and its ring-substituted derivatives act as emitter molecules in triplet-triplet annihilation photon upconversion (TTA-UC). A palladium porphyrin derivative,
    Language English
    Publishing date 2022-05-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp04784a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Crystal Structures and Fluorescence Spectroscopic Properties of a Series of α,ω-Di(4-pyridyl)polyenes: Effect of Aggregation-Induced Emission.

    Sonoda, Yoriko / Tohnai, Norimitsu / Shimoi, Yukihiro

    ChemPlusChem

    2020  Volume 85, Issue 9, Page(s) 1968–1980

    Abstract: Crystal structures and fluorescence spectroscopic properties were investigated for a series of all-(E) α,ω-di(4-pyridyl)polyenes (1-5) with different number of double bonds (n). Molecules 1 and 2 (n=1, 2) in crystals are arranged to form partially π- ... ...

    Abstract Crystal structures and fluorescence spectroscopic properties were investigated for a series of all-(E) α,ω-di(4-pyridyl)polyenes (1-5) with different number of double bonds (n). Molecules 1 and 2 (n=1, 2) in crystals are arranged to form partially π-overlapped structures, whereas those of 3-5 (n=3-5) are stacked in a herringbone fashion. All these molecules, the shorter polyenes in particular, are almost nonfluorescent in solution. In the solid state, 1 and 2 are highly emissive as pure organic solids [fluorescence quantum yields (φ
    Language English
    Publishing date 2020-08-03
    Publishing country Germany
    Document type Journal Article
    ISSN 2192-6506
    ISSN (online) 2192-6506
    DOI 10.1002/cplu.202000285
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  4. Article ; Online: Growth and characterization of melem hydrate crystals with a hydrogen-bonded heptazine framework.

    Dai, Tomonori / Kiuchi, Hiroki / Minamide, Hiroki / Miyake, Yuto / Inoki, Hiroya / Sonoda, Yoriko / Tsutsumi, Jun'ya / Kanai, Kaname

    Physical chemistry chemical physics : PCCP

    2022  Volume 24, Issue 22, Page(s) 13922–13934

    Abstract: In carbon nitride (CN) compounds, hydrogen bonds play a major role in cohesion, in addition to dispersion forces. The crystal structures of CN compounds ... ...

    Abstract In carbon nitride (CN) compounds, hydrogen bonds play a major role in cohesion, in addition to dispersion forces. The crystal structures of CN compounds produced
    Language English
    Publishing date 2022-06-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d2cp00691j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Solid-state [2+2] photodimerization and photopolymerization of α,ω-diarylpolyene monomers: effective utilization of noncovalent intermolecular interactions in crystals.

    Sonoda, Yoriko

    Molecules (Basel, Switzerland)

    2010  Volume 16, Issue 1, Page(s) 119–148

    Abstract: 2+2] Photocycloaddition of olefins is a very useful reaction in synthetic organic chemistry to obtain cyclobutane-containing molecules, which are almost inaccessible by other methods. The reaction, when performed in the crystalline state, occurs more ... ...

    Abstract [2+2] Photocycloaddition of olefins is a very useful reaction in synthetic organic chemistry to obtain cyclobutane-containing molecules, which are almost inaccessible by other methods. The reaction, when performed in the crystalline state, occurs more efficiently and selectively than in homogeneous solution due to tight and regular molecular arrangement in the crystal state. Despite numerous examples for the solid-state [2+2] photodimerization of monoenes, however, it is still a challenge to prepare not only dimers but also higher oligomers and polymers from conjugated polyenes, which have multiple reactive double bonds in a molecule. In our recent studies of the solid-state photoreactions of α,ω-diarylpolyenes, noncovalent intermolecular interactions in crystals were effectively utilized to prealign molecules in stacking arrangements, suitable for the [2+2] reaction. With appropriate ring-substituents, [2+2] photodimerization and photopolymerization of the polyenes took place, although the degree of polymerization was relatively low. This review will describe the details of these reactions.
    MeSH term(s) Crystallization ; Cyclization ; Dimerization ; Fluorine/chemistry ; Hydrogen Bonding ; Magnetic Resonance Spectroscopy ; Photochemistry ; Polyenes/chemistry ; Spectrophotometry, Infrared
    Chemical Substances Polyenes ; Fluorine (284SYP0193)
    Language English
    Publishing date 2010-12-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules16010119
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    Zs.MO 81: Show issues

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  6. Article ; Online: Solid-State [2+2] Photodimerization and Photopolymerization of α,ω-Diarylpolyene Monomers

    Yoriko Sonoda

    Molecules, Vol 16, Iss 1, Pp 119-

    Effective Utilization of Noncovalent Intermolecular Interactions in Crystals

    2010  Volume 148

    Abstract: 2+2] Photocycloaddition of olefins is a very useful reaction in synthetic organic chemistry to obtain cyclobutane-containing molecules, which are almost inaccessible by other methods. The reaction, when performed in the crystalline state, occurs more ... ...

    Abstract [2+2] Photocycloaddition of olefins is a very useful reaction in synthetic organic chemistry to obtain cyclobutane-containing molecules, which are almost inaccessible by other methods. The reaction, when performed in the crystalline state, occurs more efficiently and selectively than in homogeneous solution due to tight and regular molecular arrangement in the crystal state. Despite numerous examples for the solid-state [2+2] photodimerization of monoenes, however, it is still a challenge to prepare not only dimers but also higher oligomers and polymers from conjugated polyenes, which have multiple reactive double bonds in a molecule. In our recent studies of the solid-state photoreactions of α,ω-diarylpolyenes, noncovalent intermolecular interactions in crystals were effectively utilized to prealign molecules in stacking arrangements, suitable for the [2+2] reaction. With appropriate ring-substituents, [2+2] photodimerization and photopolymerization of the polyenes took place, although the degree of polymerization was relatively low. This review will describe the details of these reactions.
    Keywords ring-substituted diphenylhexatriene ; cyclobutane ; [2+2] photocycloaddition ; hydrogen bond ; stacking arrangement ; Organic chemistry ; QD241-441
    Subject code 540
    Language English
    Publishing date 2010-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Solid-State [2+2] Photodimerization and Photopolymerization of a,w-Diarylpolyene Monomers

    Yoriko Sonoda

    Molecules, Vol 16, Iss 1, Pp 119-

    Effective Utilization of Noncovalent Intermolecular Interactions in Crystals

    2010  Volume 148

    Abstract: 2+2] Photocycloaddition of olefins is a very useful reaction in synthetic organic chemistry to obtain cyclobutane-containing molecules, which are almost inaccessible by other methods. The reaction, when performed in the crystalline state, occurs more ... ...

    Abstract [2+2] Photocycloaddition of olefins is a very useful reaction in synthetic organic chemistry to obtain cyclobutane-containing molecules, which are almost inaccessible by other methods. The reaction, when performed in the crystalline state, occurs more efficiently and selectively than in homogeneous solution due to tight and regular molecular arrangement in the crystal state. Despite numerous examples for the solid-state [2+2] photodimerization of monoenes, however, it is still a challenge to prepare not only dimers but also higher oligomers and polymers from conjugated polyenes, which have multiple reactive double bonds in a molecule. In our recent studies of the solid-state photoreactions of a,w-diarylpolyenes, noncovalent intermolecular interactions in crystals were effectively utilized to prealign molecules in stacking arrangements, suitable for the [2+2] reaction. With appropriate ring-substituents, [2+2] photodimerization and photopolymerization of the polyenes took place, although the degree of polymerization was relatively low. This review will describe the details of these reactions.
    Keywords ring-substituted diphenylhexatriene ; cyclobutane ; [2+2] photocycloaddition ; hydrogen bond ; stacking arrangement ; Organic chemistry ; QD241-441
    Subject code 540
    Language English
    Publishing date 2010-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Mechanism of high photoluminescence quantum yield of melem.

    Kiuchi, Hiroki / Sonoda, Yoriko / Miyake, Yuto / Kobayashi, Fumiya / Tsutsumi, Jun'ya / Tadokoro, Makoto / Kanai, Kaname

    Physical chemistry chemical physics : PCCP

    2022  Volume 24, Issue 38, Page(s) 23602–23611

    Abstract: To produce high-efficiency organic light-emitting diodes, materials that exhibit thermally activated delayed fluorescence (TADF) are attracting attention as alternatives to phosphorescent materials containing heavy metallic elements. Melem, a small ... ...

    Abstract To produce high-efficiency organic light-emitting diodes, materials that exhibit thermally activated delayed fluorescence (TADF) are attracting attention as alternatives to phosphorescent materials containing heavy metallic elements. Melem, a small molecule with a heptazine backbone composed only of nitrogen, carbon, and hydrogen, is known to emit light in the near-ultraviolet region and exhibit high photoluminescence (PL) quantum yield and delayed fluorescence. However, the mechanism underlying the high PL quantum yield remains unclear. This study aimed to elucidate the mechanism of the high PL quantum yield of melem by examining its optical properties in detail. When the amount of dissolved oxygen in the melem solution was increased by bubbling oxygen through it, the PL quantum yield and emission lifetime decreased significantly, indicating that the triplet state was involved in the light-emission mechanism. Furthermore, the temperature dependence of the PL intensity of melem was investigated; the PL intensity decreased with decreasing temperature, indicating that it increases thermally. The experimental results show that melem is a TADF material that produces an extremely high PL quantum yield by upconversion from the triplet to the singlet excited state.
    Language English
    Publishing date 2022-10-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d2cp03693b
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  9. Article ; Online: Effect of Partial Foot Amputation Level on Gait Independence in Patients With Chronic Lower Extremity Wounds: A Retrospective Analysis of a Japanese Multicenter Database.

    Sonoda, Yuma / Maeshige, Noriaki / Uemura, Mikiko / Imaoka, Shinsuke / Kawabe, Nobuhide / Hayashi, Hisae / Fujii, Miki / Tsuji, Yoriko / Furukawa, Masahide / Kohzuki, Masahiro / Terashi, Hiroto

    The international journal of lower extremity wounds

    2023  , Page(s) 15347346231158864

    Abstract: Partial foot amputation (PFA) is generally planned to minimize the amputation level; nonetheless, the effect of PFA levels on gait independence in amputees remains unclear. This study aimed to investigate the impact of PFA levels of the forefoot on gait ... ...

    Abstract Partial foot amputation (PFA) is generally planned to minimize the amputation level; nonetheless, the effect of PFA levels on gait independence in amputees remains unclear. This study aimed to investigate the impact of PFA levels of the forefoot on gait independence in patients with chronic lower extremity (LE) wounds. This multicenter retrospective cohort study included 232 hospitalized Japanese patients treated and rehabilitated for chronic LE wounds. A multivariate analysis based on PFA levels was conducted for gait independence at discharge, with age and comorbidities as independent variables. Patients with Lisfranc amputation had significantly less independent gait than patients with more distal amputation and those without amputation (<22% vs >40%;
    Language English
    Publishing date 2023-02-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2171119-7
    ISSN 1552-6941 ; 1534-7346
    ISSN (online) 1552-6941
    ISSN 1534-7346
    DOI 10.1177/15347346231158864
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6003: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  10. Article ; Online: Structure and dynamics of triplet-exciton pairs generated from singlet fission studied via magnetic field effects

    Masanobu Wakasa / Tomoaki Yago / Yoriko Sonoda / Ryuzi Katoh

    Communications Chemistry, Vol 1, Iss 1, Pp 1-

    2018  Volume 6

    Abstract: Singlet fission events could be exploited to improve solar cell performance, but currently their characterization is challenging. Here, the authors exploit magnetic field effects at low magnetic field strengths to determine the structure and diffusion ... ...

    Abstract Singlet fission events could be exploited to improve solar cell performance, but currently their characterization is challenging. Here, the authors exploit magnetic field effects at low magnetic field strengths to determine the structure and diffusion pathways of triplet-exciton pairs and to predict the efficiency of singlet fission events.
    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2018-03-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
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