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Pomogaev, Vladimir A.,Barachevsky, Valery A.,Tuktarov, Airat R.,Avramov, Pavel V.,Artyukhov, Victor Ya. American Chemical Society 2018 The journal of physical chemistry. A, Molecules, s Vol.122 No.2
<P>The photophysical and isomerization properties of hybrid molecular compounds that consist of photochromic nitro-substituted and halogenated spiropyran derivatives bonded to the surface of the [60]fullerene cage through the pyrrolidine bridge were investigated using various functionals and basis sets of TD-DFT and semiempirical quantum-chemical approaches. The role of <I>n</I>π* states formed by the lone pairs of substituents in changing of the electronic structure and photochromic properties of spiropyran derivatives was evaluated. The S<SUB>ππ</SUB>(spiropyran) → intermediate <I>n</I>π* states → S<SUB>ππ</SUB>(merocyanine) channel for phototransformation of the hybrid compound containing a nitro-substituted spiropyran moiety was established and compared with similar systems of halogenated spiropyrans attached to the [60]fullerene bulk where photoinduced isomerization does not process due to high probability of internal conversion from the excited electronic state localized on the spiropyran fragment to the states of the pyrrolidino[60]fullerene.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpcafh/2018/jpcafh.2018.122.issue-2/acs.jpca.7b08374/production/images/medium/jp-2017-08374s_0010.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp7b08374'>ACS Electronic Supporting Info</A></P>
Gyrylova, Svetlana Nikolaevna,Aksenenko, Mariya Borisovna,Gavrilyuk, Dmitriy Vladimirovich,Palkina, Nadezda Vladimirovna,Dyhno, Yuriy Alexandrovich,Ruksha, Tatiana Gennadievna,Artyukhov, Ivan Pavlovic Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.5
Russian rates for melanoma incidence and mortality are relatively low as compared to some other white populations but the tumor is of increasing importance. In this paper, data are based on a retrospective descriptive analysis of melanoma epidemiology and clinicopathological characteristics in Krasnoyarsk Territory belonging to the Siberian Federal District of the Russian Federation. The age-adjusted incidence and mortality rates for the period 1996-2009 were determined with subsequent retrospective analysis of clinicopathological data of 103 primary melanoma cases. Our results showed that incidence and mortality rates in the region under consideration match the Russian national trends and correspond to epidemiological data of the countries of Eastern Europe. Stratification of melanoma cases by age, sex, clinicopathological state and localization revealed a prevalence of lesions on the trunk and lower extremities. Most melanomas diagnosed were of superficial spreading type and the third Clark's level of tumor invasion and stage II according to AJCC. In spite of comparatively low rates of incidence and mortality the trend to increase of melanoma cases in the region under consideration obviously calls for more attention and further investigation.