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Merck

Blue luminescence of dendrimer-encapsulated gold nanoclusters.

Chemphyschem : a European journal of chemical physics and physical chemistry (2014-07-26)
Jun Myung Kim, So Hyeong Sohn, Noh Soo Han, Seung Min Park, Joohoon Kim, Jae Kyu Song
ABSTRACT

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 (Au8 and Au13). The luminescence of the gold nanoclusters was clearly distinguished from that of the dendrimers.

MATERIALS
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