[1] Lomonosov Moscow State Univ, Dept Mat Sci, 1-73 Leninskiye Gory, Moscow 119991, Russia
[2] Lomonosov Moscow State Univ, Dept Chem, 1-3 Leninskiye Gory, Moscow 119991, Russia
[3] DESY Deutsch Elekt Synchrotron, Notkestr 85, D-22607 Hamburg, Germany
[4] RAS, Kurnakov Inst Gen & Inorgan Chem, Leninsky Ave 31, Moscow 119991, Russia
[5] Russian Acad Sci UdmFRC UB RAS, Udmurt Fed Res Ctr, Ural Brunch, St Them Tatiana Baramzina 34, Izhevsk 426067, Russia
[6] KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 56-58, SE-10044 Stockholm, Sweden