[20p-211A-1~18] 13.6 Nanostructures, quantum phenomena, and nano quantum devices

△ [20p-211A-3] Metal organic frameworks as novel stabilizers for semiconductor quantum dots

〇Kohei Kumagai¹, Taro Uematsu¹, Susumu Kuwabata¹ (1.Osaka Univ.)

Keywords:Semiconductor quantum dots, Light emitting materials, Colloid synthesis

Semiconductor nanoparticles, or quantum dots (QDs), have attracted much attention as next generation light emitting materials due to their size-dependent optical properties. Surface modification of semiconductor nanoparticles by proper organic ligands, e.g. amines or thiols, is essential to obtain strong photoluminescence. Therefore, the photoluminescence quenching is often occurred by desorption of the ligands, implying the necessity of more robust protecting layers which are bound on the surface of nanoparticles. In this study, we focused on Metal Organic Frameworks (MOFs) as novel protecting agents of semiconductor nanoparticles. Various structural designs achieved by the combination of metal ions and organic ligands are one of the great advantages for use of MOFs. We examined the conditions for the growth of MOFs on semiconductor nanoparticles and investigated the changes of their optical properties brought by MOFs.