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Journal Articles

Solid-state Alder-ene reaction of 1-hexene under high pressure

Xu, J.*; Lang, P.*; Liang, S.*; Zhang, J.*; Fei, Y.*; Wang, Y.*; Gao, D.*; Hattori, Takanori; Abe, Jun*; Dong, X.*; et al.

Journal of Physical Chemistry Letters (Internet), p.2445 - 2451, 2025/00

https://doi.org/10.1021/acs.jpclett.4c03696
 Times Cited Count：0 Percentile：0.00(Chemistry, Physical)

The Alder-ene reaction is a chemical reaction between an alkene with an allylic hydrogen, and it provides an efficient method to construct the C-C bond. Traditionally, this reaction requires catalysts, high temperatures, or photocatalysis. In this study, we reported a high-pressure-induced solid-state Alder-ene reaction of 1-hexene at room temperature without a catalyst. 1-Hexene crystallizes at 4.3 GPa and polymerizes at 18 GPa, forming olefins. By exploring gas chromatography-mass spectrometry, we discovered that 1-hexene generates dimeric products through the Alder-ene reaction under high pressures. The in situ neutron diffraction shows that the reaction process did not obey the topochemical rule. A six-membered ring transition state including one C-H $$sigma$$ bond and two alkene $$pi$$ bonds was evidenced by the theoretical calculation, whose energy obviously decreased when compressed to 20 GPa. Our work offers a novel and promising method to realize the Alder-ene reaction at room temperature without a catalyst, expanding the application of this important reaction.

Journal Articles

Strong low-energy rattling modes enabled liquid-like ultralow thermal conductivity in a well-ordered solid

Liu, P.-F.*; Li, X.*; Li, J.*; Zhu, J.*; Tong, Z.*; Kofu, Maiko*; Nirei, Masami; Xu, J.*; Yin, W.*; Wang, F.*; et al.

National Science Review, 11(12), p.nwae216_1 - nwae216_10, 2024/12

https://doi.org/10.1093/nsr/nwae216
 Times Cited Count：13 Percentile：94.32(Multidisciplinary Sciences)

Journal Articles

Validation of the $$^{10}$$Be ground-state molecular structure using $$^{10}$$Be($$p,palpha$$)$$^{6}$$He triple differential reaction cross-section measurements

Li, P. J.*; Beaumel, D.*; Lee, J.*; Assi$'e$, M.*; Chen, S.*; Franchoo, S.*; Gibelin, J.*; Hammache, F.*; Harada, T.*; Kanada-En'yo, Yoshiko*; et al.

Physical Review Letters, 131(21), p.212501_1 - 212501_7, 2023/11

https://doi.org/10.1103/PhysRevLett.131.212501
 Times Cited Count：21 Percentile：94.59(Physics, Multidisciplinary)

The cluster structure of the neutron-rich isotope $$^{10}$$Be has been probed via the ($$p,palpha$$) reaction. The triple differential cross-section was extracted and compared to distorted-wave impulse approximation reaction calculations performed in a microscopic framework using the Tohsaki-Horiuchi-Schuck-R$"o$pke wave function and the wave function deduced from Antisymmetrized Molecular Dynamics calculations. The remarkable agreement between calculated and measured cross-sections in both shape and magnitude validates the description of the $$^{10}$$Be ground-state as a rather compact nuclear molecule.

Journal Articles

Multiple mechanisms in proton-induced nucleon removal at $$sim$$100 MeV/nucleon

Pohl, T.*; Sun, Y. L.*; Obertelli, A.*; Lee, J.*; G$'o$mez-Ramos, M.*; Ogata, Kazuyuki*; Yoshida, Kazuki; Cai, B. S.*; Yuan, C. X.*; Brown, B. A.*; et al.

Physical Review Letters, 130(17), p.172501_1 - 172501_8, 2023/04

https://doi.org/10.1103/PhysRevLett.130.172501
 Times Cited Count：13 Percentile：87.42(Physics, Multidisciplinary)

We report on the first proton-induced single proton- and neutron-removal reactions from the neutron deficient $$^{14}$$O nucleus with large Fermi-surface asymmetry at $$sim$$100 MeV/nucleon. Our results provide the first quantitative contributions of multiple reaction mechanisms including the quasifree knockout, inelastic scattering, and nucleon transfer processes. It is shown that the inelastic scattering and nucleon transfer, usually neglected at such energy regime, contribute about 50% and 30% to the loosely bound proton and deeply bound neutron removal, respectively.

Journal Articles

Ten years of warming increased plant-derived carbon accumulation in an East Asian monsoon forest

Zhang, J.*; Kuang, L.*; Mou, Z.*; Kondo, Toshiaki*; Koarashi, Jun; Atarashi-Andoh, Mariko; Li, Y.*; Tang, X.*; Wang, Y.-P.*; Pe$~n$uelas, J.*; et al.

Plant and Soil, 481(1-2), p.349 - 365, 2022/12

https://doi.org/10.1007/s11104-022-05642-8
 Times Cited Count：12 Percentile：71.66(Agronomy)

Journal Articles

Study of medium-spin states of neutron-rich $$^{87,89,91}$$Rb isotopes

Torres, D. A.*; Chapman, R.*; Kumar, V.*; Hadinia, B.*; Hodsdon, A.*; Labiche, M.*; Liang, X.*; O'Donnell, D.*; Ollier, J.*; Orlandi, R.; et al.

European Physical Journal A, 55(9), p.158_1 - 158_21, 2019/09

https://doi.org/10.1140/epja/i2019-12839-6
 Times Cited Count：1 Percentile：11.14(Physics, Nuclear)

Journal Articles

Adsorption behavior of $$^{181}$$W and $$^{rm 93m}$$Mo as lighter homologues of seaborgium (Sg) in HF/HNO$$_{3}$$ on anion-exchange resin

Liang, X. H.*; Tsukada, Kazuaki; Toyoshima, Atsushi; Li, Z.*; Asai, Masato; Sato, Tetsuya; Sato, Nozomi; Nagame, Yuichiro

Journal of Radioanalytical and Nuclear Chemistry, 292(2), p.917 - 922, 2012/05

https://doi.org/10.1007/s10967-012-1624-2
 Times Cited Count：9 Percentile：54.18(Chemistry, Analytical)

Adsorption of carrier-free radiotracers $$^{181}$$W and $$^{rm 93m}$$Mo produced in the $$^{181}$$Ta($$p$$, $$n$$) and $$^{rm nat}$$Nb($$p$$, $$n$$) reactions, respectively, on anion-exchange resin was studied in mixed solution of HF and HNO$$_{3}$$ in a concentration range of 10$$^{-4}$$ - 10$$^{-1}$$ M HF/0.1 M HNO$$_{3}$$. Distribution coefficients ($$K_{rm d}$$) of $$^{181}$$W and $$^{rm 93m}$$Mo at 70 $$^{circ}$$C showed the V-shaped variation with the minimum at around 10$$^{-1}$$ M HF/0.1 M HNO$$_{3}$$ although variation of the $$K_{rm d}$$ values for $$^{rm 93m}$$Mo was quite small compared with that for $$^{181}$$W. Formation of oxofluoro complexes for W and Mo is briefly discussed.

Journal Articles

Sulfate complexation of element 104, Rf, in H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solution

Li, Z.*; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Kikuchi, Takahiro; Nagame, Yuichiro; Sch$"a$del, M.; Pershina, V.*; et al.

Radiochimica Acta, 100(3), p.157 - 164, 2012/03

https://doi.org/10.1524/ract.2012.1898
 Times Cited Count：14 Percentile：68.81(Chemistry, Inorganic & Nuclear)

Journal Articles

PET studies of neuroendcrine tumors by using $$^{76}$$Br-$$m$$-bromobenzylguanidine ($$^{76}$$Br-MBBG)

Watanabe, Shigeki; Hanaoka, Hirofumi*; Liang, J. X.*; Iida, Yasuhiko*; Watanabe, Satoshi; Endo, Keigo*; Ishioka, Noriko

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 107, 2011/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2010-065.pdf

Journal Articles

PET imaging of norepinephrine transporter-expressing tumors using $$^{76}$$Br-${it meta}$-bromobenzylguanidine

Watanabe, Shigeki; Hanaoka, Hirofumi*; Liang, J. X.; Iida, Yasuhiko*; Endo, Keigo*; Ishioka, Noriko

Journal of Nuclear Medicine, 51(9), p.1472 - 1479, 2010/09

https://doi.org/10.2967/jnumed.110.075465
 Times Cited Count：22 Percentile：56.72(Radiology, Nuclear Medicine & Medical Imaging)

Journal Articles

$$^{76}$$Br-m-bromobenzylguanidine ($$^{76}$$Br-MBBG) for in vivo imaging of neuroendcrine-tumor with PET

Watanabe, Shigeki; Hanaoka, Hirofumi*; Liang, J. X.; Iida, Yasuhiko*; Watanabe, Satoshi; Endo, Keigo*; Ishioka, Noriko

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 107, 2009/12

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2009-041.pdf

Journal Articles

Chelating ion-exchange methods for the preparation of no-carrier-added $$^{64}$$Cu

Watanabe, Shigeki; Watanabe, Satoshi; Liang, J. X.; Hanaoka, Hirofumi*; Endo, Keigo*; Ishioka, Noriko

Nuclear Medicine and Biology, 36(6), p.587 - 590, 2009/09

https://doi.org/10.1016/j.nucmedbio.2009.04.005
 Times Cited Count：8 Percentile：27.84(Radiology, Nuclear Medicine & Medical Imaging)

Oral presentation

Warming effect on soil organic carbon release and its feedback to carbon cycle in Asian forest ecosystems

Liang, N.*; Takahashi, Yoshiyuki*; Teramoto, Munemasa*; Zhao, X.*; Tomimatsu, Hajime*; Takagi, Kentaro*; Hirano, Takashi*; Kondo, Toshiaki*; Koarashi, Jun; Atarashi-Andoh, Mariko; et al.

no journal, , 

no abstracts in English

Oral presentation

Evaluation of long-term soil warming effect on soil organic carbon decomposition

Teramoto, Munemasa*; Kondo, Toshiaki*; Liang, N.*; Zeng, J.*; Nakane, Kaneyuki*; Koarashi, Jun; Atarashi-Andoh, Mariko; Aramaki, Takafumi*; Tomimatsu, Hajime*; Zhao, X.*

no journal, , 

no abstracts in English

Oral presentation

Comprehensive field study on Asian forest soil carbon dynamics

Liang, N.*; Teramoto, Munemasa*; Takagi, Kentaro*; Kondo, Toshiaki*; Koarashi, Jun; Atarashi-Andoh, Mariko; Hirano, Takashi*; Takahashi, Yoshiyuki*; Takagi, Masahiro*; Ishida, Sachinobu*; et al.

no journal, , 

no abstracts in English

Oral presentation

Synthesis and stability of [$$^{77}$$Br]-m-Bromobenzylguanidine ($$^{77}$$Br-MBBG)

Watanabe, Shigeki; Ishioka, Noriko; Liang, J. X.; Hanaoka, Hirofumi*; Iida, Yasuhiko*; Endo, Keigo*

no journal, , 

Oral presentation

Development of a novel production method of $$^{64}$$Cu by ion beam

Watanabe, Shigeki; Iida, Yasuhiko*; Hanaoka, Hirofumi*; Liang, J. X.; Endo, Keigo*; Ishioka, Noriko

no journal, , 

no abstracts in English

Oral presentation

Anion-exchange behavior of the group-6 elements in HF/HNO$$_{3}$$ mixed solutions; Towards the study of ion-exchange behavior of $$^{106}$$Sg

Liang, X.; Li, Z.; Tsukada, Kazuaki; Toyoshima, Atsushi; Asai, Masato; Sato, Tetsuya; Sato, Nozomi; Kikuchi, Takahiro; Kaneya, Yusuke; Nagame, Yuichiro

no journal, , 

Anion-exchange behavior of the group-6 elements, W and Mo, in HF and HNO$$_{3}$$ mixed solutions has been studied by a batch method using the carrier-free radiotracers $$^{rm 181}$$W and $$^{rm 93m}$$Mo. The long-lived isotope $$^{181}$$W and the short-lived isotope $$^{rm 93m}$$Mo were produced in the $$^{181}$$Ta(p,n) and the $$^{93}$$Nb(p,n) reaction at the JAEA tandem accelerator, respectively. The solutions containing $$^{rm 181}$$W or $$^{rm 93m}$$Mo were mixed with anion exchange resin. Radioactivities of the solution were assayed for $$gamma$$-ray spectrometry, and then distribution coefficients (K$$_{d}$$s) of these elements were determined. It was found that the K$$_{d}$$ values of W depend strongly on the concentration of HF, while those of Mo are almost constant as a function of [HF] under the given conditions.

Oral presentation

Development of novel radiopharmaceutical for clinical applications; $$^{76}$$Br labeled m-bromobenzylguanidine($$^{76}$$Br-MBBG)

Watanabe, Shigeki; Liang, J. X.*; Watanabe, Satoshi; Ishioka, Noriko; Hanaoka, Hirofumi*; Iida, Yasuhiko*; Endo, Keigo*

no journal, , 

no abstracts in English

Oral presentation

Cation-exchange behavior of element 104, Rf, in H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solution ([H$$^{+}$$] = 1.0 M)

Li, Z.; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Sch$"a$del, M.*; Nagame, Yuichiro; Liang, X. H.*; Kasamatsu, Yoshitaka*; et al.

no journal, , 

Cation-exchange behavior of $$^{261}$$Rf (T$$_{1/2}$$ = 78 s) produced in the $$^{248}$$Cm($$^{18}$$O,5n) reaction was studied on a "one-atom-at-a-time" scale in 0.15-0.69 M H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solutions ([H$$^{+}$$] = 1.0 M) using an automated ion-exchange separation apparatus coupled with a detection system for alpha-spectroscopy (AIDA). It was found that adsorption probabilities (%ads) of Rf on the cation-exchange resin decrease with increasing [HSO$$_{4}$$$$^{-}$$], showing successive formation of Rf sulfate complexes. Rf exhibits a weaker complex formation than the lighter homologues Zr and Hf.

36 (Records 1-20 displayed on this page)