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Blue Luminescence of Dendrimer‐Encapsulated Gold Nanoclusters
Author(s) -
Kim Jun Myung,
Sohn So Hyeong,
Han Noh Soo,
Park Seung Min,
Kim Joohoon,
Song Jae Kyu
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402287
Subject(s) - nanoclusters , dendrimer , luminescence , luminescent measurements , nanotechnology , photochemistry , materials science , persistent luminescence , chemistry , optoelectronics , polymer chemistry , thermoluminescence
Direct evidence for the blue luminescence of gold nanoclusters encapsulated inside hydroxyl‐terminated polyamidoamine (PAMAM) dendrimers was provided by spectroscopic studies as well as by theoretical calculations. Steady‐state and time‐resolved spectroscopic studies showed that the luminescence of the gold nanoclusters consisted largely of two electronic transitions. Theoretical calculations indicate that the two transitions are attributed to the different sizes of the gold nanoclusters (Au 8 and Au 13 ). The luminescence of the gold nanoclusters was clearly distinguished from that of the dendrimers.