1. Institut
des Matériaux Jean Rouxel (IMN), CNRS, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 03, France
2. CEA, DEN, DTCD/SPDE/LP2C—Marcoule, 30207 Bagnols-sur-Cèze, France
3. Department
of Chemistry and Research Institute for Basic Sciences, Kyung Hee University, Seoul 130-701, Republic of Korea
4. Department
of Chemistry, North Carolina State University (NCSU), Raleigh, North Carolina 27695, United States