“…[1][2][3] Threedimensional nanostructures, which can be obtained, for instance, in heterogeneous oxychalcogenide glasses such as GeO 2 -GeS 2 , also exhibit marked optical and photostructural properties. 1,4 On the other hand, studies on zero-and onedimensional nanostructured chalcogenides have relatively been limited. 1 A notable exception is to use the zeolite, 5 a variety of porous Si-Al-O crystals, and similar materials as hosts for incorporating low-dimensional chalcogen clusters.…”