Associate Professor, PhD.
Research Interest: Organic Chemistry; Physical Organic Chemistry; Development
of redox-active strained molecules and their properties changed in response to external stimuli.
E-mail: yishigakiATsci.hokudai.ac.jp (AT=@)
ORCID ID: 0000-0001-7961-3595
Google Scholar: Link, researchmap: Link
主要論文
42) "Direct evidence for a carbon–carbon one-electron σ-bond"
T. Shimajiri,* S. Kawaguchi, T. Suzuki, Y. Ishigaki* Nature2024, 634, 347-351.
[DOI: 10.1038/s41586-024-07965-1]
41) "Structural-Change-Induced Two-Stage Redox Behavior of Pentacenebisquinodimethane with Tricolor Chromism" Y. Ishigaki,* S. Mizuno, T. Harimoto, T. Shimajiri, T. Suzuki* Chem. Asian J.2024, 19, e202400316.
[DOI: 10.1002/asia.202400316]
40) "Cation-Stacking Approach Enabling Interconversion between Bis(xanthylium) and its Reduced Species"
M. Kikuchi, T. Tadokoro, T. Tachibana, S. Suzuki, T. Suzuki, Y. Ishigaki* Chem. Eur. J.2024, 30, e202401683.
[DOI: 10.1002/chem.202401683]
Preprint: ChemRxiv2024 [DOI: 10.26434/chemrxiv-2024-fd9ws]
39) "Synthesis and Chiroptical Properties of Cyclic Anthraquinodimethane Dimer Using Au-Templated Method"
S. Sugiyama, K. Murotani, F. Ishiwari, A. Saeki, H. Kawai, T. Suzuki, Y. Tsuchido,*Y. Ishigaki* Chem. Lett.2024, 53, upae102.
[DOI: 10.1093/chemle/upae102 (open access)]
38) "Thermal Equilibrium between Quinoid/Biradical Forms Enhancing Electrochemical Amphotericity" Y. Ishigaki,* S. Mizuno, K. Sugawara, T. Hashimoto, S. Suzuki, T. Suzuki* Chem. Eur. J.2024, 30, e202400916.
[DOI: 10.1002/chem.202400916]
37) "Domino-Redox Reaction Induced by An Electrochemically Triggered Conformational Change"
T. Harimoto, T. Tadokoro, S. Sugiyama, T. Suzuki, Y. Ishigaki* Angew. Chem. Int. Ed.2024, 63, e202316753.
[DOI: 10.1002/anie.202316753]
36) "Vis-NIR-Electrochromic Interconversion of Dithienylmethylium-Type Cyanine Dyes with a σ-Bonded Dimer or Isolable Neutral Radical"
S.-G. Chong, S. Suzuki, T. Suzuki,*Y. Ishigaki* Bull. Chem. Soc. Jpn.2023, 96, 1144-1149.
[DOI: 10.1246/bcsj.20230169 (open access)]
35) "Double Dynamic Structural Change Enabling Tricolor Chromism by the Realization of Apparent Two-Electron Transfer to Skip the Open-Shell State"
T. Harimoto, Y. Sugai, K. Sugawara, T. Suzuki, Y. Ishigaki* Chem. Eur. J.2023, 29, e202301476.
[DOI: 10.1002/chem.202301476] <Selected as a very important paper (VIP)> <Selected as a Cover Feature>
34) "One-Pot Synthesis of Helical Azaheptalene and Chiroptical Switching of an Isolable Radical Cation"
Y. Nishimura, T. Harimoto, T. Suzuki, Y. Ishigaki* Chem. Eur. J.2023, 29, e202301759.
[DOI: 10.1002/chem.202301759]
Preprint: ChemRxiv2023 [DOI: 10.26434/chemrxiv-2023-sc6tf] <Selected as a Cover Feature>
33) "Chalcogen-Peierls Transition: Single-Crystal-to-Single-Crystal Transition from a Two-Dimensional to a One-Dimensional Network of Chalcogen Bonds at Low Temperature"
S. Kawaguchi,# T. Shimajiri,# T. Akutagawa, T. Fukushima, Y. Ishigaki,* T. Suzuki* Bull. Chem. Soc. Jpn.2023, 96, 631-635.
[DOI: 10.1246/bcsj.20230091 (open access)] #These authors contributed equally. <Selected Paper>
32) "Bis(triarylmethylium)-type Macrocyclic Dications: Mechanochromic Emission Extending to the Red Region" Y. Ishigaki,* T. Tachibana, K. Sugawara, M. Kikuchi, T. Suzuki ChemPlusChem2023, 88, e202300110.
[DOI: 10.1002/cplu.202300110] <Highlighted in ChemistryViews>
31) "Exceptionally Flexible Quinodimethanes with Multiple Conformations: Polymorph-Dependent Colour Tone and Emission of Crystals"
K. Sugawara, T. Ono,* Y. Yano, T. Suzuki, Y. Ishigaki* Mater. Chem. Front.2023, 7, 1591-1598.
[DOI: 10.1039/D2QM01199A (open access)] <Selected as back cover> <受賞・報道関係参照>
30) "Enhancement of NIR-Absorbing Ability of Bis(diarylmethylium)-Type Dicationic Dyes Based on an Ortho-Substitution Strategy"
T. Harimoto, T. Suzuki, Y. Ishigaki* Chem. Eur. J.2023, 29, e202203899.
[DOI: 10.1002/chem.202203899]
29) "Dibenzotropylium-Capped Orthogonal Geometry Enabling Isolation and Examination of a Series of Hydrocarbons with Multiple 14π-Aromatic Units"
Y. Hayashi, S. Suzuki, T. Suzuki, Y. Ishigaki* J. Am. Chem. Soc.2023, 145, 2596-2608.
[DOI: 10.1021/jacs.2c12574 (open access)] <Highlighted in Nature Synthesis> <受賞・報道関係参照>
28) "Ultralong Csp3–Csp3 Single Bonds Shortened and Stabilized by London Dispersion"
T. Shimajiri,* Y. Kawakami, S. Kawaguchi, Y. Hayashi, K. Hada, T. Suzuki, Y. Ishigaki* Synlett2023, 34, 1147-1152.
[DOI: 10.1055/a-1934-1346] <Cluster> <Selected as the cover graphic>
27) "Near-Infrared Electrochromic Behavior of Dibenzothiepin Derivatives Attached by Two Michler's Hydrol Blue Units" Y. Ishigaki,* M. Takata, T. Shimajiri, L. Wu, W. Zeng, D. Ye, T. Suzuki* Chem. Eur. J.2022, 28, e202202457.
[DOI: 10.1002/chem.202202457]
26) "Geometrical and Electronic Structure of Cation Radical Species of Tetraarylanthraquinodimethane: An Intermediate for Unique Electrochromic Behavior" Y. Ishigaki,* R. Fukagawa, K. Sugawara, T. Harimoto, T. Suzuki* Chem. Asian J.2022, 17, e202200914.
[DOI: 10.1002/asia.202200914]
25) "Solid-State Assembly by Chelating Chalcogen Bonding in Quinodimethane Tetraesters Fused with a Chalcogenadiazole" Y. Ishigaki, K. Asai, H.-P. Jacquot de Rouville, T. Shimajiri, J. Hu, V. Heitz, T. Suzuki* ChemPlusChem2022, 87, e202200075.
[DOI: 10.1002/cplu.202200075]
24) "Chalcogen Bond versus Halogen Bond: Changing Contributions in Determining the Crystal Packing of Dihalobenzochalcogenadiazoles" Y. Ishigaki, K. Shimomura, K. Asai, T. Shimajiri, T. Akutagawa, T. Fukushima, T. Suzuki* Bull. Chem. Soc. Jpn.2022, 95, 522-531.
[DOI: 10.1246/bcsj.20220008 (open access)]
23) "Anthraquinodimethane Ring-flip in Sterically Congested Alkenes: Isolation of Isomer and Elucidation of Intermediate through Experimental and Theoretical Approach" Y. Ishigaki,* T. Tadokoro, Y. Harabuchi, Y. Hayashi, S. Maeda,* T. Suzuki* Bull. Chem. Soc. Jpn.2022, 95, 38-46.
[DOI: 10.1246/bcsj.20210355 (open access)]
22) "An Activatable Afterglow/MRI Bimodal Nanoprobe with Fast Response to H2S for In Vivo Imaging of Acute Hepatitis"
W. Zeng, L. Wu, Y. Ishigaki, T. Harimoto, Y. Hu, Y. Sun, Y. Wang, T. Suzuki,* H.-Y. Chen, D. Ye* Angew. Chem. Int. Ed.2022, 61, e202111759.
[DOI: 10.1002/anie.202111759]
21) "Generation of hydroxyl radical-activatable ratiometric near-infrared bimodal probes for early monitoring of tumor response to therapy"
L. Wu,#Y. Ishigaki,# W. Zeng,# T. Harimoto, B. Yin, Y. Chen, S. Liao, Y. Liu, Y. Sun, X. Zhang, Y. Liu, Y. Liang, P. Sun, T. Suzuki,* G. Song,* Q. Fan,* D. Ye* Nat. Commun.2021, 12, 6145.
[DOI: 10.1038/s41467-021-26380-y (open access)] #These authors contributed equally.
20) "[1,2,5]Chalcogenadiazole-fused Dicyanonaphthoquinodiimines: Larger Contribution from Chalcogen Bond than Weak Hydrogen Bond in Determining Crystal Structures" Y. Ishigaki, K. Asai, T. Shimajiri, T. Suzuki* Chem. Lett.2021, 50, 1184-1187.
[DOI: 10.1246/cl.210095]
19) "Chalcogen Bond versus Weak Hydrogen Bond: Changing Contributions in Determining the Crystal Packing of [1,2,5]Chalcogenadiazole-Fused Tetracyanonaphthoquinodimethanes" Y. Ishigaki, K. Asai, T. Shimajiri, T. Akutagawa, T. Fukushima, T. Suzuki* Org. Mater.2021, 3, 90-96.
[DOI: 10.1055/s-0041-1725046 (open access)]
18) "Hysteretic Three-State Redox Interconversion among Zigzag Bisquinodimethanes with Non-fused Benzene Rings and Twisted Tetra-/Dications with [5]/[3]Acenes Exhibiting Near-Infrared Absorptions" Y. Ishigaki,* T. Harimoto, K. Sugawara, T. Suzuki* J. Am. Chem. Soc.2021, 143, 3306-3311.
[DOI: 10.1021/jacs.1c00189] <受賞・報道関係参照>
17) "Molecular Recognition by Chalcogen Bond: Selective Charge‐transfer Crystal Formation of Dimethylnaphthalene with Selenadiazolotetracyanonaphthoquinodimethane" Y. Ishigaki, K. Asai, H.-P. Jacquot de Rouville, T. Shimajiri, V. Heitz, H. Fujii-Shinomiya, T. Suzuki* Eur. J. Org. Chem.2021, 990-997.
[DOI: 10.1002/ejoc.202001554]
16) "Flexible C–C Bonds: Reversible Expansion, Contraction, Formation, and Scission of Extremely Elongated Single Bonds"
T. Shimajiri, T. Suzuki, Y. Ishigaki* Angew. Chem. Int. Ed.2020, 59, 22252-22257.
[DOI: 10.1002/anie.202010615] <受賞・報道関係参照>
15) "Hexaarylbutadiene: A Versatile Scaffold with Tunable Redox Properties towards Organic Near-Infrared Electrochromic Material" Y. Ishigaki,* T. Harimoto, K. Sugimoto, L. Wu, W. Zeng, D. Ye, T. Suzuki* Chem. Asian J.2020, 15, 1147-1155.
[DOI: 10.1002/asia.201901816]
14) "Switching of Redox Properties Triggered by a Thermal Equilibrium between Closed-shell Folded and Open-shell Twisted Species" Y. Ishigaki,* T. Hashimoto, K. Sugawara, S. Suzuki, T. Suzuki* Angew. Chem. Int. Ed.2020, 59, 6581-6584.
[DOI: 10.1002/anie.201916089]
[HUSCAP: free download] <受賞・報道関係参照>
13) "H2S-activatable near-infrared afterglow luminescent probes for sensitive molecular imaging in vivo"
L. Wu,#Y. Ishigaki,# Y. Hu, K. Sugimoto, W. Zeng, T. Harimoto, Y. Sun, J. He, T. Suzuki,* X. Jiang, H.-Y. Chen, D. Ye* Nat. Commun.2020, 11, 446.
[DOI: 10.1038/s41467-020-14307-y (open access)] #These authors contributed equally.
12) "Photo- and Thermal Interconversion of Multiconfigurational Strained Hydrocarbons Exhibiting Completely Switchable Oxidation to Stable Dicationic Dyes" Y. Ishigaki,* Y. Hayashi, T. Suzuki* J. Am. Chem. Soc.2019, 141, 18293-18300.
[DOI: 10.1021/jacs.9b09646]
[HUSCAP: free download] <受賞・報道関係参照>
11) "Two-way Chromic Systems Based on Tetraarylanthraquinodimethanes: Electrochromism in Solution and Mechanofluorochromism in a Solid State" Y. Ishigaki,* K. Sugawara, M. Yoshida, M. Kato, T. Suzuki* Bull. Chem. Soc. Jpn.2019, 92, 1211-1217.
[DOI: 10.1246/bcsj.20190094] <Selected Paper>
10) "Engineering of Electrochromic Materials as Activatable Probes for Molecular Imaging and Photodynamic Therapy"
L. Wu, Y. Sun, K. Sugimoto, Z. Luo, Y. Ishigaki, K. Pu, T. Suzuki,* H.-Y. Chen, D. Ye* J. Am. Chem. Soc.2018, 140, 16340-16352.
[DOI: 10.1021/jacs.8b10176]
9) "Transmission of Point Chirality to Axial Chirality for Strong Circular Dichroism in Triarylmethylium-o,o-dimers" Y. Ishigaki, T. Iwai, Y. Hayashi, A. Nagaki, R. Katoono, K. Fujiwara, J. Yoshida, T. Suzuki* Synlett2018, 29, 2147-2154.
[DOI: 10.1055/s-0037-1610190] <Cluster>
8) "Longest C–C Single Bond among Neutral Hydrocarbons with a Bond Length beyond 1.8 Å" Y. Ishigaki,* T. Shimajiri, T. Takeda, R. Katoono, T. Suzuki* Chem2018, 4, 795-806.
[DOI: 10.1016/j.chempr.2018.01.011 (free access)]
[HUSCAP: free download] <Selected as the Editors' Favorite Chem Articles from 2018> <受賞・報道関係参照>
7) "9,10-Dihydrophenanthrene with Two Spiro(dibenzocycloheptatriene) Units: A Highly Strained Caged Hydrocarbon Exhibiting Reversible Electrochromic Behavior" Y. Ishigaki,* Y. Hayashi, K. Sugawara, T. Shimajiri, W. Nojo, R. Katoono, T. Suzuki* Molecules2017, 22, 1900.
[DOI: 10.3390/molecules22111900 (open access)]
[HUSCAP: free download] <Selected as a cover>
6) "Bis(diarylethenyl)thiophenes, -bithiophenes, and -terthiophenes: a new series of electrochromic systems that exhibit a fluorescence response" Y. Ishigaki, H. Kawai, R. Katoono, K. Fujiwara, H. Higuchi, H. Kikuchi, T. Suzuki* Can. J. Chem.2017, 95, 243-252.
[DOI: 10.1139/cjc-2016-0222]
5) "Bis(diarylethenyl)thiophene, -bithiophene, and -terthiophene: A New Series of Violene-Cyanine Hybrid-Type Electron Donors" Y. Ishigaki, H. Kawai, R. Katoono, K. Fujiwara, T. Suzuki* Heterocycles2015, 90, 136-143.
[DOI: 10.3987/com-14-s(k)33]
4) "Three-Way Output Molecular Response System based on Tetrakis(3,4-dialkoxyphenyl)-3,4-dihydro[5]helicenes: Perturbation of Properties by Long Alkyl Chains" Y. Ishigaki, S. Yoshida, H. Kawai, R. Katoono, K. Fujiwara, T. Fukushima, T. Suzuki* Heterocycles2015, 90, 126-135.
[DOI: 10.3987/com-14-s(k)31]
3) "Acceptor–Donor–Acceptor Oligomers Containing Dithieno[3,2-b:2′,3′-d]pyrrole and Thieno[2,3-c]pyrrole-4,6-dione Units for Solution-Processed Organic Solar Cells"
L. G. Mercier, A. Mishra,*Y. Ishigaki, F. Henne, G. Schulz, P. Bäuerle* Org. Lett.2014, 16, 2642-2645.
[DOI: 10.1021/ol500809e]
2) "Hysteretic tricolor electrochromic systems based on the dynamic redox properties of unsymmetrically substituted dihydrophenanthrenes and biphenyl-2,2'-diyl dications: efficient precursor synthesis by a flow microreactor method" Y. Ishigaki, T. Suzuki,* J. Nishida, A. Nagaki, N. Takabayashi, H. Kawai, K. Fujiwara, J. Yoshida Materials2011, 4, 1906-1926.
[DOI: 10.3390/ma4111906 (open access)]
1) "Multi-Input/Multi-Output Molecular Response System Based on the Dynamic Redox Behavior of 3,3,4,4-Tetraaryldihydro[5]helicene Derivatives: Reversible Formation/Destruction of Chiral Fluorophore and Modulation of Chiroptical Properties by Solvent Polarity"
T. Suzuki,*Y. Ishigaki, T. Iwai, H. Kawai, K. Fujiwara, H. Ikeda, Y. Kano, K. Mizuno Chem. Eur. J.2009, 15, 9434-9441.
[DOI: 10.1002/chem.200900968] <Highlighted in Synfacts>
共著論文
29) "Optical Property Control by the Interligand Charge Transfer Excited State in Brominated Homoleptic and Heteroleptic Aluminum Dinuclear Triple-Stranded Helicates"
Y. Konishi, T. Ehara, L. Cui, K. Ueno, Y. Ishigaki, T. Harada, T. Konta, K. Onda, Y. Hoshino, K. Miyata,* T. Ono* Inorg. Chem.2024, 63, 11716-11725.
[DOI: 10.1021/acs.inorgchem.4c01214]
28) "Crystallographic and spectroscopic studies on persistent triarylpropargyl cations"
T. Shimajiri,* T. Tsue, S. Koakutsu, Y. Ishigaki, T. Suzuki* Chem. Commun.2024, 60, 7152-7155.
[DOI: 10.1039/D4CC01786B]
Preprint: ChemRxiv2024 [DOI: 10.26434/chemrxiv-2024-3b2vc]
27) "Influence of Structural Isomers of Naphthalene Diimides on Photophysical and Electrochemical Properties"
Y. Yamamoto, A. Horioka, L. Cui, Y. Ishigaki, Y. Hoshino, T. Ono* Chem. Lett.2024, 53, upad022.
[DOI: 10.1093/chemle/upad022]
26) "Smart Lipid Nanoparticle that Remodels Tumor Microenvironment for Activatable H2S Gas and Photodynamic Immunotherapy"
L. Wu, Y. Liu, W. Zeng, Y. Ishigaki, S. Zhou, X. Wang, Y. Sun, Y. Zhang, X. Jiang, T. Suzuki,* D. Ye* J. Am. Chem. Soc.2023, 145, 27838-27849.
[DOI: 10.1021/jacs.3c11328]
25) "On-Surface Synthesis of Multiple Cu Atom-Bridged Organometallic Oligomers"
K. Sun, K. Sugawara, A. Lyalin,*Y. Ishigaki, K. Uosaki, O. Custance, T. Taketsugu, T. Suzuki,* S. Kawai* ACS Nano2023, 17, 24355-24362.
[DOI: 10.1021/acsnano.3c10524]
24) "Strain-Sensitive On-Surface Ladderization by Non-Dehydrogenative Heterocyclization"
Y. Ma, K. Sugawara, Y. Ishigaki, K. Sun, T. Suzuki,* S. Kawai* Chem. Eur. J.2023, 29, e202203622.
[DOI: 10.1002/chem.202203622]
23) "Single-Molecule Observation of Redox Reactions Enabled by Rigid and Isolated Tripodal Molecules"
Y. Kobayashi, Y. Yokota,* R. A. Wong, M. Hong, J. Takeya, S. Osawa, F. Ishiwari, Y. Shoji, T. Harimoto, K. Sugimoto, Y. Ishigaki, T. Suzuki,* T. Fukushima,* Y. Kim* J. Phys. Chem. C2023, 127, 746-758.
[DOI: 10.1021/acs.jpcc.2c07362]
22) "Multiple Molecular Interactions between Alkyl Groups and Dissociated Bromine Atoms on Ag(111)"
S. Kawai,* K. Sugawara, Y. Ma, K. Sun, O. Custance, Y. Ishigaki, T. Suzuki* Phys. Chem. Chem. Phys.2022, 24, 22191-22197.
[DOI: 10.1039/D2CP03198A]
21) "A Ratiometric Photoacoustic Probe with a Reversible Response to Hydrogen Sulfide and Hydroxyl Radicals for Dynamic Imaging of Liver Inflammation"
L. Wu, W. Zeng, Y. Ishigaki, J. Zhang, H. Bai, T. Harimoto, T. Suzuki, D. Ye* Angew. Chem. Int. Ed.2022, 61, e202209248.
[DOI: 10.1002/anie.202209248]
20) "A Hydrogen-Bonded Organic Framework Based on Pyrazinopyrazine"
Q. Ji, K. Takahashi, S. Noro, Y. Ishigaki, K. Kokado, T. Nakamura,* I. Hisaki* Cryst. Growth Des.2021, 21, 4656-4664.
[DOI: 10.1021/acs.cgd.1c00506]
19) "Heterocyclic Ring-Opening of Nanographene on Au(111)"
K. Sun, K. Sugawara, A. Lyalin, Y. Ishigaki, K. Uosaki, T. Taketsugu,* T. Suzuki,* S. Kawai* Angew. Chem. Int. Ed.2021, 60, 9427-9432.
[DOI: 10.1002/anie.202017137]
18) "A hydrogen-bonded organic framework based on redox-active tri(dithiolylidene)cyclohexanetrione"
K. I. Shivakumar, S. Noro, Y. Yamaguchi, Y. Ishigaki, A. Saeki, K. Takahashi, T. Nakamura,* I. Hisaki* Chem. Commun.2021, 57, 1157-1160.
[DOI: 10.1039/D0CC07776C]
17) "5-Arylidenetetronate as a Versatile Electrophore for Pi-Extended Electron Acceptors"
Y. Hayashi, Y. Ishigaki, J. Merad, T. Suzuki,* M. Médebielle* Heterocycles2021, 103, 165-171.
[DOI: 10.3987/COM-20-S(K)2] <Highlighted in Synfacts>
16) "A Novel Condensed Heterocyclic Quinone with a Dibenzofuranobisthiadiazole Skeleton"
K. Sugawara, W. Nojo, Y. Ishigaki, J. Ohkanda, T. Suzuki* Heterocycles2020, 101, 99-103.
[DOI: 10.3987/COM-19-S(F)7]
15) "Selective Formation of a Mixed‐valence State from Linearly‐bridged Oligo(aromatic diamines): Drastic Structural Change into a Folded Columnar Stack for Half‐filled Polycations"
W. Nojo, Y. Ishigaki, T. Takeda, T. Akutagawa, T. Suzuki* Chem. Eur. J.2019, 25, 7759-7765.
[DOI: 10.1002/chem.201901272]
14) "Molecular Wires with Controllable π-Delocalization Incorporating Redox-Triggered π-Conjugated Switching Units"
W. Nojo, H. Tamaoki, Y. Ishigaki, R. Katoono, K. Fujiwara, T. Fukushima, T. Suzuki* ChemPlusChem2019, 84, 634-642.
[DOI: 10.1002/cplu.201800341]
13) "Expandability of a long C-O bond by a scissor effect in acenaphthofuran"
Y. Uchimura, T. Shimajiri, Y. Ishigaki, R. Katoono, T. Suzuki* Chem. Commun.2018, 54, 10300-10303.
[DOI: 10.1039/C8CC05998E]
12) "Double bond formation based on nitroaldol reaction and radical elimination: a prototype segment connection method for the total synthesis of nigricanoside A dimethyl ester"
T. Tsunoda, K. Fujiwara,* S. Okamoto, Y. Kondo, U. Akiba, Y. Ishigaki, R. Katoono, T. Suzuki Tetrahedron Lett.2018, 59, 1846-1850.
[DOI: 10.1016/j.tetlet.2018.03.091]
11) "Narrower HOMO-LUMO gap attained by conformational switching through peripheral polyarylation in 1,4,5,8-tetraaza-9,10-anthraquinodimethanes"
T. Suzuki,*Y. Ishigaki, K. Sugawara, Y. Umezawa, R. Katoono, A. Shimoyama, Y. Manabe, K. Fukase, T. Fukushima Tetrahedron2018, 74, 2239-2244.
[DOI: 10.1016/j.tet.2018.03.041]
10) "An improved synthesis of the C42-C52 segment of ciguatoxin 3C"
T. Saito, K. Fujiwara,* Y. Sano, T. Sato, Y. Kondo, U. Akiba, Y. Ishigaki, R. Katoono, T. Suzuki Tetrahedron Lett.2018, 59, 1372-1376.
[DOI: 10.1016/j.tetlet.2018.02.052]
9) "Organic Molecular Layer with High Electrochemical Bistability: Synthesis, Structure, and Properties of a Dynamic Redox System with Lipoate Units for Binding to Au(111)"
E. Ohta, H. Uehara, Y. Han, K. Wada, H. Noguchi, R. Katoono, Y. Ishigaki, H. Ikeda, K. Uosaki, T. Suzuki* ChemPlusChem2017, 82, 1043-1047.
[DOI: 10.1002/cplu.201600649] <Selected as a cover>
8) "Oxidative Desulfurization of Electron-Donating 5,5,7,7-Tetraaryl-5,7-dihydrodibenzo[c,e]thiepins and the Related Heterocycles: Generation of Dicationic Dyes upon Two-Electron Oxidation"
T. Suzuki,* T. Kuroda, H. Tamaoki, S. Higasa, T. Nehira, R. Katoono, Y. Ishigaki, K. Fujiwara, T. Fukushima, H. Yamada Heterocycles2017, 95, 816-829.
[DOI: 10.3987/com-16-s(s)50]
7) "Stereoselective Encapsulation for A Triarylmethylium o,o-Dimer by Natural γ-Cyclodextrin: Origin of Chiral Recognition for the Axially Chiral Dicationic Guest"
T. Suzuki,* J. P. Cerón-Carrasco, H. Tamaoki, Y. Ishigaki, R. Katoono, T. Fukushima, H. Pérez-Sánchez* Heterocycles2017, 94, 1123-1132.
[DOI: 10.3987/COM-17-13674]
6) "Redox-induced Conformational Changes in 1,3-Propylene- and m-Xylylenebis[5-(10-butyl-5,10-dihydrobenzo[a]indolo[2,3-c]carbazole)]: Twin-BIC Donors that Form Sandwich-like Dimeric Cations Exhibiting NIR Absorption"
T. Suzuki,* W. Nojo, Y. Sakano, R. Katoono, Y. Ishigaki, H. Ohno, K. Fujiwara Chem. Lett.2016, 45, 720-722.
[DOI: 10.1246/cl.160278]
5) "Electrochiroptical Response in Aqueous Media: 9,10-Dihydrophenanthrene-9,10-diyl Dications with Michlar's Hydrol Blue Chromophores Attached with Oligoethylene Glycol Units"
T. Suzuki,* K. Hanada, R. Katoono, Y. Ishigaki, S. Higasa, H. Higuchi, H. Kikuchi, K. Fujiwara, H. Yamada, T. Fukushima Chem. Lett.2014, 43, 982-984.
[DOI: 10.1246/cl.140163]
4) "Preparation, properties, and X-ray structures of bis(10-methyl-9-methyleneacridan)-type electron donors with a thiophene, bithiophene, or terthiophene skeleton: redox switching of thiophene-thienoquinoid structure accompanied by UV-vis-NIR electrochromic response"
T. Suzuki,* Y. Hoshiyama, K. Wada, Y. Ishigaki, Y. Miura, H. Kawai, R. Katoono, K. Fujiwara, T. Fukushima Chem. Lett.2013, 42, 1004-1006.
[DOI: 10.1246/cl.130401]
3) "Nonadditive substituent effects on expanding prestrained C-C bond in crystal: X-ray analyses on unsymmetrically substituted tetraarylpyracenes prepared by a flow microreactor method"
T. Suzuki,* Y. Uchimura, Y. Ishigaki, T. Takeda, R. Katoono, H. Kawai, K. Fujiwara, A. Nagaki, J. Yoshida Chem. Lett.2012, 41, 541-543.
[DOI: 10.1246/cl.2012.541]
2) "Drastic change in racemization barrier upon redox reactions: novel chiral-memory units based on dynamic redox systems"
T. Suzuki,* K. Wada, Y. Ishigaki, Y. Yoshimoto, E. Ohta, H. Kawai, K. Fujiwara Chem. Commun.2010, 46, 4100-4102.
[DOI: 10.1039/c0cc00026d]
1) "4,5-bis(diarylmethylene)-1,3-dithiole: a novel helical electron donor exhibiting electrochromic behavior"
T. Suzuki,* S. Mikuni, Y. Ishigaki, H. Higuchi, H. Kawai, K. Fujiwara Chem. Lett.2009, 38, 748-749.
[DOI: 10.1246/cl.2009.748] <Highlighted in ChemInform>
15) "Carbon-based Biradicals: Structural and Magnetic Switching" Y. Ishigaki,* T. Harimoto, T. Shimajiri, T. Suzuki* Chem. Rev.2023, 123, 13952-13965.
[DOI: 10.1021/acs.chemrev.3c00376]
13) "Crystal Engineering, Electron Conduction, and Molecular Recognition and Reactivity by Chalcogen Bonds in Tetracyanoquinodimethanes Fused with [1,2,5]Chalcogenadiazoles"
T. Shimajiri, H.-P. Jacquot de Rouville, V. Heitz, T. Akutagawa, T. Fukushima, Y. Ishigaki, T. Suzuki* Synlett2023, 34, 1978-1990.
[DOI: 10.1055/a-2072-2951]
11) "Redox-Active Hydrocarbons: Isolation and Structural Determination of Cationic States toward Advanced Response Systems"
T. Harimoto, Y. Ishigaki*ChemPlusChem2022, 87, e202200013.
[DOI: 10.1002/cplu.202200013] <Selected as front cover>
9) "Redox-active tetraaryldibenzoquinodimethanes" Y. Ishigaki,* K. Sugawara, T. Tadokoro, Y. Hayashi, T. Harimoto, T. Suzuki* Chem. Commun.2021, 57, 7201-7214.
[DOI: 10.1039/D1CC02260A] <Selected as front cover>
7) "Expandability of the Covalent Bond: A New Facet Discovered in Extremely Long Csp3-Csp3 Single Bonds" Y. Ishigaki, Y. Uchimura, T. Shimajiri, T. Suzuki* Bull. Chem. Soc. Jpn.2021, 94, 1385-1393.
[DOI: 10.1246/bcsj.20200374 (open access)]
6) "9,9'-Bi(xanthene)-Type Hexaphenylethane Derivatives as Advanced Organic Electrochromic Systems"
T. Suzuki,*Y. Ishigaki, M. Takata, J. Nishida, T. Fukushima Heterocycles2021, 102, 419-450.
[DOI: 10.3987/REV-20-938]
1) "Redox-Mediated Reversible σ-Bond Formation/Cleavage"
T. Suzuki, H. Tamaoki, J. Nishida, H. Higuchi, T. Iwai, Y. Ishigaki, K. Hanada, R. Katoono, H. Kawai, K. Fujiwara, T. Fukushima Organic Redox Systems2015, 13-37.
[DOI: 10.1002/9781118858981.ch2]
17) "π-Electronic Molecules with Distorted C-C Covalent Bonds: Reversible Switching of Structure and Physical Properties"
Yusuke Ishigaki International Congress on Pure & Applied Chemistry Kota Kinabalu, Kota Kinabalu, Malaysia, November 22nd, 2022
15) "Redox-Active Strained Molecules with Controllable Structure and Physical Properties"
Yusuke Ishigaki Strasbourg-Japan USIAS symposium on Condensed Conjugation, Strasbourg, France, September 12th, 2022
14) "Strained π-Electronic Systems: Control of Structures and Physical Properties by External Stimuli"
Yusuke Ishigaki, Takuya Shimajiri, Takanori Suzuki UHMob International Conference - Organic Semiconductors: From Principles to Applications, Mainz, Germany, September 9th, 2022
13) "Redox-active Quinodimethane Derivatives with Overcrowded C=C Bonds"
Yusuke Ishigaki The 25th IUPAC International Conference on Physical Organic Chemistry, Hiroshima, July 11th, 2022
11) "Construction of Stimuli-Responsive π-Electronic Systems with Highly Strained C–C Covalent Bonds"
Yusuke Ishigaki The third CSLT-CSJ Joint Symposium, Zoom, March 12th, 2022
10) "Strained Hydrocarbons with Switchable Structural and Physical Properties Induced by Photo-, Thermo-, and Electrochemical Input"
Yusuke Ishigaki 第71回錯体化学討論会 Electrochemical control of excited states of photo-functional coordination and hybrid compounds -Electrofluorochromism and electrochemiluminescence-, Zoom, September 16th, 2021
8) "Highly Strained Compounds: Switchable Redox Properties and Flexible C–C bonds"
Yusuke Ishigaki Joint Symposium of School of Science & WPI-ICReDD in Hokkaido Univ., Zoom, December 10th, 2020
4) "Hyper covalent bond in highly strained hydrocarbon: an expandable C–C single bond with a bond length beyond 1.8 Å"
Yusuke Ishigaki, Takuya Shimajiri, Takanori Suzuki 14th International Symposium on Functional π-Electron Systems, Berlin, Germany, June 7th, 2019
3) "Unique response systems based on redox-active hydrocarbons with hyper covalent bond or strained double bond"
Yusuke Ishigaki Asian International Symposium -Electrochemistry- (The 99th CSJ Annual Meeting), Kobe, Japan, March 18th, 2019