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Circularly Polarized Luminescent CdS Quantum Dots Prepared in a Protein Nanocage
Author(s) -
Naito Masanobu,
Iwahori Kenji,
Miura Atsushi,
Yamane Midori,
Yamashita Ichiro
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201002552
Subject(s) - luminescence , quantum dot , dodecahedron , photoluminescence , laser , crystallography , materials science , nanotechnology , optoelectronics , chemistry , physics , optics
CdS quantum dots prepared in ferritin, an α‐helix‐rich rhombic dodecahedral protein, showed left‐handed cicularly polarized luminescence (CPL) from both direct transition and surface‐trapping sites with relatively large anisotropy factors. Utilizing laser photoetching, the PL/CPL bands from surface‐trapping sites blue‐shifted with decreased QD size, but the direct transition band disappeared.