Yuichi Hirai
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Explore the profile of Yuichi Hirai including associated specialties, affiliations and a list of published articles.
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19
Citations
92
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Recent Articles
1.
Kitagawa Y, Tomikawa T, Aikawa K, Miyazaki S, Akama T, Kobayashi M, et al.
Commun Chem
. 2025 Jan;
8(1):24.
PMID: 39875727
Photoinduced metal-to-ligand (or ligand-to-metal) charge-transfer (CT) states in metal complexes have been extensively studied toward the development of luminescent materials. However, previous studies have mainly focused on CT transitions between...
2.
Hirai Y, Wrona-Piotrowicz A, Zakrzewski J, Ciechanska M, Ohmura T, Takeda T, et al.
J Mater Chem C Mater
. 2024 Feb;
12(6):1952-1957.
PMID: 38343524
A family of (alkylsilyl)pyrene-1-carboxamides exhibits similar mechanofluorochromic responses upon grinding. However, their spontaneous fluorescence recovery processes are distinct despite their similarity in chemical structures and crystal packings. Fluorescence spectroscopy, crystallography,...
3.
Takemoto R, Hirai Y, Watanabe S, Harada H, Suzuki T, Hashiguchi T, et al.
J Virol
. 2023 May;
97(5):e0034023.
PMID: 37166307
Measles virus (MeV), the causative agent of measles, is an enveloped RNA virus of the family which remains an important cause of childhood morbidity and mortality. MeV has two envelope...
4.
Nakanishi T, Hirai Y, Xu J, Takeda T, Watanabe S, Yasumori A, et al.
Sci Technol Adv Mater
. 2023 Mar;
24(1):2183711.
PMID: 36891540
Luminescent lanthanide coordination polymer crystals (LCPCs) represent an area of growing interest in materials chemistry owing to their unique and tailorable functional properties. The LCPCs provide a high level of...
5.
Shirogane Y, Harada H, Hirai Y, Takemoto R, Suzuki T, Hashiguchi T, et al.
Sci Adv
. 2023 Jan;
9(4):eadf3731.
PMID: 36706187
Measles virus (MeV), which is usually non-neurotropic, sometimes persists in the brain and causes subacute sclerosing panencephalitis (SSPE) several years after acute infection, serving as a model for persistent viral...
6.
Hirai Y, Laize-Generat L, Wrona-Piotrowicz A, Zakrzewski J, Makal A, Brosseau A, et al.
Chemphyschem
. 2021 May;
22(15):1638-1644.
PMID: 33971071
A series of acetyl pyrenes and pyrenyl ynones with and without tert-butyl groups showed distinct mechanofluorochromism (MFC). Four pairs of polymorphic solids were found out of six compounds and interestingly,...
7.
Hirai Y, Wrona-Piotrowicz A, Zakrzewski J, Brosseau A, Guillot R, Metivier R, et al.
Photochem Photobiol Sci
. 2020 Jan;
19(2):229-234.
PMID: 31971525
Aiming to develop a library of organic mechanofluorochromic (MFC) materials, solid-state emission properties of pyrene-derivatives with amidophosphonate groups (diethyl 1-(pyrene-1-carboxamido)alkylphosphonates, alkyl: methyl, isopropyl, phenyl) were investigated. All of these compounds...
8.
Hirai Y, Ferreira da Rosa P, Nakanishi T, Kitagawa Y, Fushimi K, Seki T, et al.
Inorg Chem
. 2018 Nov;
57(23):14653-14659.
PMID: 30422642
Novel Eu(III) coordination polymers with furan-based bridging ligands [Eu(hfa)(Cy)] and [Eu(hfa)(Tol)] (hfa: hexafluoroacetylacetonato, Cy: 2,5-bis(dicyclohexylphosphoryl)furan), Tol: 2,5-bis(di- p-tolylphosphoryl)furan) are reported. The rigidity of assembly steric structures was controlled by intermolecular...
9.
Koizuka T, Yanagisawa K, Hirai Y, Kitagawa Y, Nakanishi T, Fushimi K, et al.
Inorg Chem
. 2018 Jun;
57(12):7097-7103.
PMID: 29862805
Three types of red luminescent Eu(III) complexes with Schiff base and hfa ligands (hfa: hexafluoroacetylacetonate), mononuclear [Eu(hfa)(OAc)(salen)] (OAc: acetate anion, salen: N,N'-bis(salicylidene)ethylenediamine), brick-type [Eu(hfa)(OAc)(salbn)] (salbn: N,N'-bis(salicylidene)-1,4-butanediamine), and polynuclear [Eu(hfa)(OAc)(salhen)] (salhen:...
10.
Hirai Y, Nakanishi T, Kitagawa Y, Fushimi K, Seki T, Ito H, et al.
Angew Chem Int Ed Engl
. 2017 May;
56(25):7171-7175.
PMID: 28508446
Luminescence upon the grinding of solid materials (triboluminescence, TL) has long been a puzzling phenomenon in natural science and has also attracted attention because of its broad application in optics....