As a chairman , I would like to send a cordial and warm invitation to participate in the forthcoming 7-TH INTERNATIONAL SYMPOSIUM “MOLECULAR MOBILITY AND ORDER IN POLYMER SYSTEMS’’ which will be held in St.Petersburg, Russia, 6 - 10 of June, 2011. The Symposium is under the sponsorship of IUPAC and dedicated to the International Year of the Chemistry. The Symposium is one of the most important international polymer meetings in Russia. It continues a serie of Symposia organized by the Institute of Macromolecular Compounds of Russian Academy of Sciences and titled alternatively as “Molecular Mobility and Order in Polymer Systems”(I- 1994, III-1999 and V- 2005) and “Molecular Order and Mobility in Polymer Systems”.(II- 1996, IV-2002, VI- 2008). The main aim of the Symposium is to discuss modern problems of physics and chemistry of complex stimuli-responsive polymer systems with nano-structure organization and "soft" order preserving a pronounced molecular mobility. Both experimental data and results of theory and simulation will be presented. The Symposium program will include about 20 plenary lectures , oral presentations and poster sections. The Symposium is placed in the historical centre of the city in the Palace of Scientists. Our guests can combine the participation in meeting sessions and the visiting the well recognized historical sites of one of the most beautiful cities of the world. Prof.Anatoly Darinskii Symposium Chairman Institute of Macromolecular Compounds of Russian Academy of Sciences Bolshoi pr.31 St Petersburg 199004 Russia