2022

Late-Stage Modification of π-Electron Systems Based on Asymmetric Oxidation of Medium-Sized Sulfur-Containing Ring
M. Hayakawa, S. Horike, Y. Hijikata, K. Yasui, S. Yamaguchi, A. Fukazawa*
Chem. Commun. 2022, 58, 2548–2551.
DOI: 10.1039/D1CC06996A

2021

Construction of Tricyclic Nitrogen Heterocycles by Gold(I)-Catalyzed Cascade Cyclization of Allenynes and Its Application to Polycyclic π-Electron Systems
H. Komatsu, T. Ikeuchi, H. Tsuno, N. Arichi, K. Yasui, S. Oishi, S. Inuki, A. Fukazawa,* H. Ohno*
Angew. Chem. Int. Ed. 2021, 60, 27019–27025.
DOI: 10.1002/anie.202111267

Extended π-Electron Delocalization in Quinoid-Based Conjugated Polymers Boosts Intrachain Charge Carrier Transport
T. Mikie, M. Hayakawa, K. Okamoto, K. Iguchi, S. Yashiro, T. Koganezawa, M. Sumiya, H. Ishii, S. Yamaguchi, A. Fukazawa*, I. Osaka*
Chem. Mater. 2021, 33, 8183–8193.
DOI: 10.1021/acs.chemmater.1c02072
Press release (in Japanese)

(c) Mindy Takamiya

Thiophene-fused 1,4-Diazapentalene: A Stable C=N-Containing π-Conjugated System with Restored Antiaromaticity
J. Usuba, A. Fukazawa*
Chem. Eur. J. 2021, 27, 16127–16134.
DOI: 10.1002/chem.202103122
Selected as a Hot Paper
Highlighted in a Front Cover & Cover Profile

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Dithieno[a,e]pentalenes: Highly Antiaromatic Yet Stable π-Electron Systems without Bulky Substituents
J. Usuba, M. Hayakawa, S. Yamaguchi, A. Fukazawa*
Chem. Eur. J. 2021, 27, 1638–1647.
DOI: 10.1002/chem.202004244
Selected as a Hot Paper
Highlighted in a Front Cover & Cover Profile

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Before 2018

2018

Negative Fluorescence Anisotropy of Phosphole Oxide-Based Dyes in Nematic Liquid Crystals
T. Ohzono,* T. Yatabe, C. Wang, A. Fukazawa, S. Yamaguchi Communications Chemistry, 2018, 1, Article number 52.
DOI: 10.1038/s42004-018-0055-6

End-Capping π-Conjugated Systems with Medium-Sized Sulfur-Containing Rings: A Route Towards Solution-Processable Air-Stable Semiconductors
A. Fukazawa,* Y. Toda, M. Hayakawa, A. Sekioka, H. Ishii, T. Okamoto, J. Takeya, Y. Hijikata, S. Yamaguchi*
Chem. Eur. J. 2018, 24, 11503–11510.
DOI: 10.1002/chem.201802656
Highlighted in SYNFACTS

Water-Soluble Phospholo[3,2-b]phosphole P,P’-Dioxide-Based Fluorescent Dyes with High Photostability
C. Wang, A. Fukazawa,* Y. Tanabe, N. Inai, D. Yokogawa, S. Yamaguchi*
Chem. Asian J. 2018, 13, 1616–1624.
DOI: 10.1002/asia.201800533

Near Infrared Two-Photon-Excited and -Emissive Dyes Based on a Strapped Excited-State Intramolecular Proton-Transfer (ESIPT) Scaffold
N. Suzuki, K. Suda, D. Yokogawa,* H. Kitoh-Nishioka, S. Irle, A. Ando, L. M. G. Abegão, K. Kamada,* A. Fukazawa, S. Yamaguchi*
Chem. Sci. 20189, 2666–2673.
DOI: 10.1039/C8SC00066B
Highlighted in an Inside Back Cover

2017

Uncovering Different States of Topological Defects in Schlieren Textures of a Nematic Liquid Crystal
T. Ohzono,* K. Katoh, C. Wang, A. Fukazawa, S. Yamaguchi, J.-i. Fukuda*
Sci. Rep. 20177, 16814.
DOI: 10.1038/s41598-017-16967-1
Ranked in the top 100 read physics papers for Scientific Reports in 2017 (among more than 3000 papers)

Photochemical Intramolecular C–H Addition of Dimesityl(hetero)arylboranes via a [1,6]-Sigmatropic Rearrangement
N. Ando, A. Fukazawa, T. Kushida, Y. Shiota, S. Itoyama, K. Yoshizawa,* Y. Matsui, Y. Kuramoto, H. Ikeda,* S. Yamaguchi*
Angew. Chem. Int. Ed. 2017, 56, 12210–12214.
DOI: 10.1002/anie.201706929

Super-Photostable Phosphole-Based Dye for Multiple-Acquisition STED Imaging
C. Wang, M. Taki,* Y. Sato,* A. Fukazawa,* T. Higashiyama, S. Yamaguchi*
J. Am. Chem. Soc. 2017139, 10374–10381.
DOI: 10.1021/jacs.7b04418
Press release (Nagoya University)
Highlighted in web (日本の研究.com, Optronics Online)

Synthesis of Seminaphtho-Phospha-Fluorescein Dyes Based on Consecutive Arylation of Aryldichlorophosphines
A. Fukazawa,* J. Usuba, R. A. Adler, S. Yamaguchi*
Chem. Commun. 201753, 8565–8568.
DOI: 10.1039/C7CC04323F

Structures and Physical Properties of Chemically Reduced Diindenosiloles and Their π-Extended Derivatives
R. Takano, R. Shintani,* A. Fukazawa, S. Yamaguchi,* K. Nakabayashi, S.-i. Ohkoshi, K. Nozaki*
Organometallics 201736, 2646–2653.
DOI: 10.1021/acs.organomet.7b00260

A New Infrared Dye that Undergoes Multiple Interconversions through Acid-Base Equilibria and Reversible Redox Processes
K. Asai, A. Fukazawa,* S. Yamaguchi*
Angew. Chem. Int. Ed. 201756, 6848–6852.
DOI: 10.1002/anie.201702140

Tuning the Photophysical Properties of Photostable Benzo[b]phosphole P-Oxide-Based Fluorophores
R. A. Adler, C. Wang, A. Fukazawa,* S. Yamaguchi*
Inorg. Chem. 201756, 8718–8725.
DOI: 10.1021/acs.inorgchem.7b00658

Synthesis and Physical Properties of Strained Doubly Phosphorus-Bridged Biaryls and Viologens
T. W. Greulich, E. Yamaguchi, C. Doerenkamp, C. G. Daniliuc, A. Fukazawa, H. Eckert,* S. Yamaguchi,* A. Studer*
Chem. Eur. J. 201723, 6029–6033.
DOI: 10.1002/chem.201605272

Facile Synthesis of Polycyclic Pentalenes with Enhanced Hückel Antiaromaticity
H. Oshima, A. Fukazawa,* S. Yamaguchi*
Angew. Chem. Int. Ed. 201756, 3270–3274.
DOI: 10.1002/anie.201611344
Highlighted in a Back Cover
Highlighted in SYNFACTS

2016

Stable Red-Emissive Cationic Dithienotropylium Dyes
K. Asai, A. Fukazawa,* S. Yamaguchi*
Chem. Eur. J. 2016, 22, 17571–17575.
DOI: 10.1002/chem.201604509

A Macrocyclic Fluorophore Dimer with Flexible Linkers: Bright Excimer Emission with Long Fluorescence Lifetime
H. Osaki, C.-M. Chou, M. Taki,* K. Welke, D. Yokogawa, S. Irle,* Y. Sato, T. Higashiyama, S. Saito, A. Fukazawa, S. Yamaguchi*
Angew. Chem. Int. Ed. 201655, 7131–7315.
DOI: 10.1002/anie.201602239
Highlighted as a Hot Paper

A Biphenyl Containing Two Electron-Donating and Two Electron-Accepting Moieties: A Rigid and Small Donor–Acceptor–Donor Ladder System
T. W. Greulich, N. Suzuki, C. G. Daniliuc, A. Fukazawa, E. Yamaguchi, A. Studer,* S. Yamaguchi*
Chem. Commun. 201652, 2374–2377.
DOI: 10.1039/C5CC03063C
Highlighted in SYNFACTS

Phospha-fluorescein: A Red-Emissive Fluorescein Analogue with High Photobleaching Resistance
A. Fukazawa,* S. Suda, M. Taki,* E. Yamaguchi, M. Grzybowski, Y. Sato, T. Higashiyama, S. Yamaguchi*
Chem. Commun. 201652, 1120–1123.
DOI: 10.1039/C5CC09345G
Highlighted as a Cover Picture

2015

A Phosphole Oxide Based Fluorescence Dye with Exceptional Resistance to Photobleaching: A Practical Tool for Continuous Imaging in STED Microscopy
C. Wang, A. Fukazawa,* M. Taki,* Y. Sato, T. Higashiyama,* S. Yamaguchi*
Angew. Chem. Int. Ed. 201554, 15213–15217.
DOI: 10.1002/anie.201507939
Press release (Nagoya University)
Highlighted in a newspaper (日経産業新聞) and websites (日本の研究.com, Alpha Galileo JP, EurekAlert!JP, Optronics Online, BioOptics, asia RESEACH NEWS)
超耐光性蛍光色素として市販化(2017年9月発売, 商品名 C-Naphox-TEG, 東京化成工業株式会社)

A Benzophosphole P-Oxide with an Electron-Donating Group at 3-Position: Enhanced Fluorescence in Polar Solvents
E. Yamaguchi, A. Fukazawa,* Y. Kosaka, D. Yokogawa, S. Irle,* S. Yamaguchi*
Bull. Chem. Soc. Jpn. 201588, 1545–1552.
DOI: 10.1246/bcsj.20150238
Selected Paper in Issue 11, 2015

A Red-emitting Ratiometric Fluorescent Probe Based on a Benzophosphole P-oxide Scaffold for the Detection of Intracellular Sodium Ions
M. Taki,* H. Ogasawara, H. Osaki, A. Fukazawa, Y. Sato, K. Ogasawara, T. Higashiyama, S. Yamaguchi*
Chem. Commun. 201551, 11880–11883.
DOI: 10.1039/C5CC03547C

A Nonaromatic Thiophene-fused Heptalene and Its Aromatic Dianion
H. Oshima, A. Fukazawa,* T. Sasamori, S. Yamaguchi*
Angew. Chem. Int. Ed. 2015, 54, 7636–7639.
DOI: 10.1002/anie.201501790

A Cyclic Octithiophene Containing β,β’-Linkages
K. Asai, A. Fukazawa,* S. Yamaguchi*
Chem. Commun. 201551, 6096–6099.
DOI: 10.1039/C5CC00570A

Environment-Sensitive Fluorescent Probe: A Benzophosphole Oxide with an Electron-Donating Substituent
E. Yamaguchi, C. Wang, A. Fukazawa,* M. Taki, Y. Sato, T. Sasaki, M. Ueda, N. Sasaki, T. Higashiyama,* S. Yamaguchi*
Angew. Chem. Int. Ed. 201554, 4539–4543.
DOI: 10.1002/anie.201500229
Highlighted in an Inside Cover
高感度な脂肪滴ライブセルイメージング色素として市販化(2016年7月発売, 商品名LipiDye, フナコシ株式会社)

2014

A Strap Strategy for Construction of an Excited-State Intramolecular Proton Transfer (ESIPT) System with Dual Fluorescence
N. Suzuki, A. Fukazawa, K. Nagura, S. Saito, H. Kitoh-Nishioka, D. Yokogawa, S. Irle,* S. Yamaguchi*
Angew. Chem. Int. Ed. 201453, 8231–8235.
DOI: 10.1002/anie.201404867

Dearomatization-Induced Transannular Cyclization: Synthesis of Electron-Accepting Thiophene-S,S-Dioxide-Fused Biphenylene
A. Fukazawa,* H. Oshima, S. Shimizu, N. Kobayashi, S. Yamaguchi*
J. Am. Chem. Soc. 2014136, 8738–8745.
DOI: 10.1021/ja503499n
Highlighted in SYNFACTS

The B(C6F5)3Boron Lewis Acid Route to Arene-Annulated Pentalenes
C. Chen, M. Harhausen, A. Fukazawa, S. Yamaguchi,* R. Fröhlich, C. G. Daniliuc, J. L. Petersen, G. Kehr, G. Erker*
Chem. Asian J. 20149, 1671–1681.
DOI: 10.1002/asia.201400096

Synthesis of Pyridine N-Oxide-BF2CF3Complexes and Their Fluorescence Properties
T. Nishida, A. Fukazawa, E. Yamaguchi, H. Oshima, S. Yamaguchi, M. Kanai,* Y. Kuninobu*
Chem. Asian J. 20149, 1026–1030.
DOI: 10.1002/asia.201301688

Hydroxyphenyl-Substituted Benzophosphole Oxides: Impact of the Intramolecular Hydrogen Bond on the Fluorescence Properties
A. Fukazawa,* H. Osaki, S. Yamaguchi*
Asian J. Org. Chem. 20143, 122–127.
DOI: 10.1002/ajoc.201300227
Highlighted as a Cover Picture
Highlighted in ChemistryViews (Wiley-VCH)

2013

Diarylated Bi(thieno[2,3-c]thiophene)s: A Ring-fusing Strategy for Controlling the Molecular Alignment of Oligoarenes
A. Fukazawa,* D. Kishi, Y. Tanaka, S. Seki, S. Yamaguchi*
Angew. Chem. Int. Ed. 201352, 12091–12095.
DOI: 10.1002/anie.201306323

Photochemical Double 5-exodig Cyclization of Alkenyl-substituted Dithienylacetylenes: Efficient Synthesis of Diarylated Dithienofulvalenes
A. Fukazawa,* T. Karasawa, H. Zhang, K. Minemura, C. Camacho, J. Wang, S. Irle,* S. Yamaguchi*
Angew. Chem. Int. Ed. 201352, 10519–10523.
DOI: 10.1002/anie.201303738

Dibenzopentalenes by B(C6F5)3Induced Cyclization Reactions of 1,2-Bis(phenylethynyl)benzenes
C. Chen, M. Harhausen, R. Liedtke, K. Bussmann, A. Fukazawa, S. Yamaguchi,* J. L. Petersen, C. G. Daniliuc, R. Fröhlich, G. Kehr, G. Erker*
Angew. Chem. Int. Ed. 201352, 5992–5996.
DOI: 10.1002/anie.201300871
Highlighted in SYNFACTS

S-Pechmann Dye: A Thiolactone-Containing Organic Dye with Pronounced Electron-Accepting Character and Its Solid-State Photophysical Properties
A. Fukazawa,* M. Adachi, K. Nakakura, S. Saito, S. Yamaguchi*
Chem. Commun. 201349, 7117–7119.
DOI: 10.1039/C3CC41007B
Highlighted in a Back Cover

Thiophene-Fused Bisdehydro[12]annulene That Undergoes Transannular Alkyne Cycloaddition by Either Light or Heat
A. Fukazawa,* H. Oshima, Y. Shiota, S. Takahashi, K. Yoshizawa,* S. Yamaguchi*
J. Am. Chem. Soc. 2013135, 1731–1734.
DOI: 10.1021/ja3126849
Highlighted in SYNFACTS

Sequential Electrophilic and Photochemical Cyclizations from Bis(bithienyl)acetylene to a Tetrathienonaphthalene Core
C. Dou, S. Saito, L. Gao, N. Matsumoto, T. Karasawa, H. Zhang, A. Fukazawa, S. Yamaguchi*
Org. Lett. 201315, 80–83.
DOI: 10.1021/ol303107y

2012

Reaction of Pentaarylboroles with Carbon Monoxide: An Isolable Organoboron Carbonyl Complex
A. Fukazawa, J. L. Dutton, C. Fan, L. G. Mercier, A. Y. Houghton, Q. Wu, W. E. Piers,* M. Parvez
Chem. Sci. 20123, 1814–1818.
DOI: 10.1039/C2SC20336G

Electron-Donating Tetrathienyl-Substituted Borole
T. Araki, A. Fukazawa, S. Yamaguchi*
Angew. Chem. Int. Ed. 2012,51, 5484–5487.
DOI: 10.1002/anie.201201156

Combined Experimental and Theoretical Studies on the Photophysical Properties of Cycloparaphenylenes
Y. Segawa, A. Fukazawa, S. Matsuura, H. Omachi, S. Yamaguchi,* S. Irle,* K. Itami*
Org. Biomol. Chem. 201210, 5979–5984.
DOI: 10.1039/C2OB25199J

Synthesis and Photophysical Properties of Aryl Substituted 2-Borylbenzaldimines and their Extended π-Conjugated Congeners
B. Neue, R. Fröhlich, B. Wibbeling, A. Fukazawa, A. Wakamiya, S. Yamaguchi,* E.-U. Würthwein*
J. Org. Chem. 201277, 2176–2184.
DOI: 10.1021/jo202212s

2011

Bis(phosphoryl)-bridged Biphenyls by Radical Phosphanylaion: Synthesis, Photophysical and Electrochemical Properties
A. Bruch, A. Fukazawa, E. Yamaguchi, S. Yamaguchi,* A. Studer*
Angew. Chem. Int. Ed. 2011, 50, 12094–12098.
DOI: 10.1002/anie.201104114

Synthesis and Structures of a Series of Bulky “Rind-Br” Based on a Rigid Fused-Ring s-Hydrindacene Skeleton
T. Matsuo,* K. Suzuki, T. Fukawa, B. Li, M. Ito, Y. Shoji, T. Otani, L. Li, M. Kobayashi, M. Hachiya, Y. Tahara, D. Hashizume, T. Fukunaga, A. Fukazawa, Y. Li, H. Tsuji, K. Tamao*
Bull. Chem. Soc. Jpn.201184, 1178–1191.
DOI: 10.1246/bcsj.20110090
Selected as the BCSJ Award Article in Nov. 2011 & Cover Picture

Zwitterionic Ladder Stilbenes with Phosphonium and Borate-Bridges: Intramolecular Cascade Cyclization and Structure-Photophysical Properties Relationship
A. Fukazawa,* E. Yamaguchi, E. Ito, H. Yamada, J. Wang, S. Irle,* S. Yamaguchi*
Organometallics 201130, 3870–3879.
DOI: 10.1021/om200453w

Phosphine Sulfides as an Anchor Unit for Single Molecule Junction
A. Fukazawa,* M. Kiguchi,* S. Tange, Y. Ichihashi, Q. Zhao, T. Takahashi, T. Konishi, K. Murakoshi, Y. Tsuji, A. Staykov, K. Yoshizawa,* S. Yamaguchi*
Chem. Lett. 2011, 40, 174–176.
DOI: 10.1246/cl.2011.174
Selected as Editor’s Choice

2010

Intense Fluorescence of 1-Aryl-2,3,4,5-tetraphenylphosphole Oxides in the Crystalline State
A. Fukazawa, Y. Ichihashi, S. Yamaguchi*
New J. Chem. 2010,34, 1537–1540. (Themed Issue: Main Group Chemistry)
DOI: 10.1039/c0nj00155d
Highlighted as an Inside Front Cover

Thiophene-Fused Phospholo[3,2-b]phospholes and Their Dichalcogenides: Synthesis and Structure-Photophysical Properties Relationships
A. Fukazawa, T.-a. Murai, L. Li, Y. Chen, S. Yamaguchi*
C. R. Chimie 201013, 1082–1090. (Special issue: Phosphorus Chemistry Today)
DOI: 10.1016/j.crci.2010.04.021

Zwitterionic Ladder Bis(arylethenyl)benzenes with Large Two-Photon Absorption Cross Sections
A. Fukazawa, H. Yamada, Y. Sasaki, S. Akiyama, S. Yamaguchi*
Chem. Asian J. 20105, 466–469.
DOI: 10.1002/asia.200900517
Most accessed articles in 01/2010

2009

Benzo[b]phosphole-Containing π-Electron Systems: Synthesis Based on an Intramolecular trans-Halophosphanylation and Some Insights into Their Properties
A. Fukazawa, Y. Ichihashi, Y. Kosaka, S. Yamaguchi*
Chem. Asian J. 20094, 1729–1740.
DOI: 10.1002/asia.200900303
Most accessed articles in 10/2009

Structural Modification of Silicon-Bridged Ladder Stilbene Oligomers and Distyrylbenzenes
H. Yamada, C. Xu, A. Fukazawa, A. Wakamiya, S. Yamaguchi*
Macro. Chem. Phys.2009,210, 904–916.
DOI: 10.1002/macp.200900037

2008

Phosphonium and Borate-Bridged Zwitterionic Ladder Stilbene and Its Extended Analogues
A. Fukazawa, H. Yamada, S. Yamaguchi*
Angew. Chem. Int. Ed. 200847, 5582–5585.
DOI: 10.1002/anie.200801834
Highlighted in SYNFACTS

Bis-Phosphoryl-Bridged Stilbenes Synthesized by an Intramolecular Cascade Cyclization
A. Fukazawa, M. Hara, T. Okamoto, E.-C. Son, C. Xu, K. Tamao, S. Yamaguchi*
Org. Lett. 200810, 913–916.
DOI: 10.1021/ol7030608

By 2007

Coplanar Oligo(p-phenylenedisilenylene)s Based on the Octaethyl-Substituted s-Hydrindacenyl Groups
A. Fukazawa, Y. Li, S. Yamaguchi, H. Tsuji,* K. Tamao*
J. Am. Chem. Soc. 2007129, 14164–14165.
DOI: 10.1021/ja0764207

Skeletal Rearrangement of a Bicyclic 1,3-Diphenyltrisilane during Acid-Induced Dephenylation Reactions
A. Fukazawa, H. Tsuji,* K. Tamao*
Silicon Chemistry 20073, 157–163.
DOI: 10.1007/s11201-006-9022-7

all-anti-Octasilane: Conformation Control of Silicon Chains Using the Robust Bicyclic Trisilane as the Building Block
A. Fukazawa, H. Tsuji,* K. Tamao*
J. Am. Chem. Soc. 2006128, 6800–6801.
DOI: 10.1021/ja0616231

All-anti Pentasilane: Conformation Control of Oligosilanes Based on Bis(tetramethylene)-tethered Trisilane Unit
H. Tsuji, A. Fukazawa, S. Yamaguchi, A. Toshimitsu, K. Tamao*
Organometallics 200423, 3375–3377.
DOI: 10.1021/om049695t