25.01.2017 Ученые СПбГУ представили немецким дипломатам проекты — победители конкурса DFG

В Санкт-Петербургском государственном университете состоялась рабочая встреча проректора СПбГУ по научной работе Сергея Аплонова и заместителя ректора по международной деятельности Сергея Андрюшина с заместителем генерального консула Федеративной Республики Германия в Петербурге Штефаном Кордашем.

25.01.2017 Подготовлена статья для журнала "Russian History"»

По итогам проекта «Роль средств массовой информации в формировании этнических установок в массовом сознании», проведенного в 2016 году на базе РЦ ЦСИИ, подготовлена статья для журнала "Russian History": E. Rodionova, S. Savin "Ethnic Inequality in the Mass Consciousness of Russians, 1960–2010s". Научный журнал включен в БД Скопус.

1 февраля, Семинар по эволюционной и молекулярной биологии.

1 февраля. Семинар по эволюционной и молекулярной биологии Санкт-Петербургского Союза ученых совместно с Санкт-Петербургским научным центром РАН и Биомедицинским центром

Подробнее: 18.01.2017 1 февраля, Семинар по эволюционной и молекулярной биологии.

Dalton Transactions Issue 8, Pages 2516-2523

J.R. Shakirova, E.V. Grachova, V.V. Sizov, G.L. Starova, I.O. Koshevoy, A.S. Melnikov, M.C. Gimeno, A. Laguna, and S.P. Tunik

Polynuclear cage-like Au(I) phosphane complexes based on S²⁻ template: observation of multiple luminescence in coordinated polyaromatic systems

Dalton Transactions Issue 8, Pages 2516-2523

DOI: 10.1039/C6DT04126D

A rational approach to the synthesis of cage-like compounds has been realized to build a new family of sulfido-phosphane Au(I) polynuclear complexes. Ditopic phosphane ligands with an extended aromatic system were used to obtain cage compounds with a clearly determined geometry. Au(I) complexes have been fully characterised in solution using spectroscopy methods, and DFT optimisation of the molecular structure gives additional arguments in favour of the suggested structural patterns. All complexes obtained are luminescent in solution and in the solid state, and display multiple emissions with an unusual combination of two phosphorescence bands and one fluorescence band. DFT calculations show that multiple emissions were mainly determined by ¹IL and metal perturbed ³IL transitions. The ratio of singlet and triplet emission components depends on the distance between the ligand chromophoric centre and Au(I).

Optical and Quantum Electronics Volume 49, No.1, January 2017, Article 40, Pages 1-9

E. I. Ageev, D. V. Potorochin, D. V. Sachenko, G. V. Odintsova

Generation of web-like structures and nanoparticles by femtosecond laser ablation of silicon target in ambient air

Optical and Quantum Electronics Volume 49, No.1, January 2017, Article 40, Pages 1-9

DOI: 10.1007/s11082-016-0875-5

Silicon nanoparticles were produced by femtosecond laser ablation in ambient air. Obtained samples were studied using dark-field optical microscopy, scanning electron microscopy and Raman-scattering spectroscopy. Two groups of structures can be found: (1) branched amorphous structures with a minimum element size of about 10 nm and incorporations of nanocrystals (0.6–6.6 nm from Raman scattering analysis); (2) larger crystal particles with smooth surface and a typical size of 50–200 nm that provide directional visible light scattering (at dark-field optical microscopy observations). An influence of environment on resulting phase composition of silicon nanoparticles was investigated by numerical evaluation of nanoparticle’s cooling rate. The calculation shows that cooling in ambient air ensures cooling rate sufficient for crystallization.