Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Xuegong Lei"'
Autor:
Xuegong Lei, Igor V. Khudyakov, Alberto Moscatelli, Marco Ruzzi, Steffen Jockusch, Elena Sartori, Nicholas J. Turro
Publikováno v:
Photochemical & Photobiological Sciences. 13:205-210
Time-resolved electron paramagnetic resonance spectroscopy, transient absorption, and phosphorescence spectroscopy were used to investigate the spin polarization of a nitroxide free radical induced by interaction with singlet oxygen ((1)O2). The latt
Autor:
Judy Y.-C. Chen, Nicholas J. Turro, Ronald G. Lawler, Yasujiro Murata, Xuegong Lei, Yongjun Li
Publikováno v:
Organic Letters. 15:4746-4749
Relaxation rates of endo-H2O in H2O@Open-C60 in the presence of a nitroxide radical and of their nitroxide derivatives have been measured and are compared with effects for endo-H2 in similar cages. T1 relaxation enhancement of the endo-H2O and H2 ind
Autor:
Xuegong Lei, Ilya Kuprov, Judy Y.-C. Chen, Ivo Heinmaa, Salvatore Mamone, Mark Denning, Marina Carravetta, Yasujiro Murata, Maria Concistrè, Malcolm H. Levitt, Nicholas J. Turro, Yongjun Li, Gary Wall
Publikováno v:
Chemphyschem
We present a solid-state NMR study of H2 molecules confined inside the cavity of C70 fullerene cages over a wide range of temperatures (300 K to 4 K). The proton NMR spectra are consistent with a model in which the dipole-dipole coupling between the
Autor:
Marco Ruzzi, Marilena Di Valentin, Alfonso Zoleo, Nicholas J. Turro, Yasujiro Murata, Ronald G. Lawler, Koichi Komatsu, Xuegong Lei, Yongjun Li
Publikováno v:
Journal of the American Chemical Society. 134:12881-12884
An endofulleropyrrolidine, with H2 as a guest, has been reduced to a paramagnetic endofulleride radical anion. The magnetic interaction between the electron delocalized on the fullerene cage and the guest H2 has been probed by pulsed ENDOR. The exper
Autor:
Ole G. Johannessen, C. Beduz, Maria Concistrè, Anthony J. Horsewill, Riddhiman Sarkar, Mark Denning, Toomas Rõõm, Malcolm H. Levitt, Yasujiro Murata, Stéphane Rols, Ronald G. Lawler, Urmas Nagel, Nicholas J. Turro, Tomoko Nishida, Jacques Ollivier, Michael Frunzi, Judy Y.-C. Chen, Marina Carravetta, Yifeng Yang, Yongjun Li, Salvatore Mamone, Xuegong Lei
Publikováno v:
Proceedings of the National Academy of Sciences. 109:12894-12898
Inelastic neutron scattering, far-infrared spectroscopy, and cryogenic nuclear magnetic resonance are used to investigate the quantized rotation and ortho–para conversion of single water molecules trapped inside closed fullerene cages. The existenc
Autor:
Yongjun Li, Ronald G. Lawler, Judy Y.-C. Chen, Xuegong Lei, Yasujiro Murata, Koichi Komatsu, Nicholas J. Turro
Publikováno v:
The Journal of Physical Chemistry Letters. 3:1165-1168
The successful synthesis of H2O@C60 makes possible the study of magnetic interactions of an isolated water molecule in a geometrically well-defined hydrophobic environment. Comparisons are made between the T1 values of H2O@C60 and the previously stud
Autor:
Nicholas J. Turro, Koichi Komatsu, Michael Frunzi, Rafael M. Krick Calderon, Ronald G. Lawler, Xuegong Lei, Judy Y.-C. Chen, Dirk M. Guldi, Steffen Jockusch, Yasujiro Murata
Publikováno v:
Journal of the American Chemical Society. 133:14232-14235
The photochemical interconversion of the two allotropes of the hydrogen molecule [para-H(2) (pH(2)) and ortho-H(2) (oH(2))] incarcerated inside the fullerene C(70) (pH(2)@C(70) and oH(2)@C(70), respectively) is reported. Photoexcitation of H(2)@C(70)
Autor:
Kenneth B. Eisenthal, Xia Li, Steffen Jockusch, Michael W. George, Yi Rao, Xuegong Lei, Nicholas J. Turro
Publikováno v:
The Journal of Physical Chemistry C. 115:12064-12067
The complementary interface-sensitive methods of sum fre- quency generation (SFG) and surface tension have been used to investigate surfactants at the air/water interface. SFG yields information on the density and orientation of surfactants at the in
Autor:
Xuegong Lei, Yongjun Li, Ronald G. Lawler, Yasujiro Murata, Koichi Komatsu, Nicholas J. Turro
Publikováno v:
The Journal of Physical Chemistry Letters. 2:741-744
The ortho-H2→para-H2 conversion in a series of H2@C60 derivatives covalently linked to a nitroxide radical has been investigated. The resulting conversion rates are in good agreement with the Wigner’s theory, modified for intramolecular interacti
Autor:
Surajit Mukherjee, Maria Francesca Ottaviani, Melody Edmunds, Nicholas J. Turro, Xuegong Lei, Kavssery P Ananthapadmanabhan
Publikováno v:
Journal of Cosmetic Dermatology. 9:202-210
Summary Objective A mild moisturizing body wash with stearic acid, a key component of corneum lipids, and emollient soybean oil has been introduced in the market place. The objectives of this study are to determine the amount and the location of the