One-pot synthesis of blue light-emitting Au nanoclusters and formation of photo-patternable composite films

Abstract

Blue light-emitting Au nanoclusters were synthesized in a simple one-pot process via reflux of Au ions with amino-terminated poly(1,2-butadiene) in toluene. DLS results and photoemission spectra showed that Au(8) nanoclusters were successfully formed. Moreover, photo-patterned films containing Au(8) clusters were prepared by photolithography.

Molecular and Electronic Structure of the Cluster [Au8(PPh3)8](NO3)2

“…For example, several publications have appeared on materials that have been reported to be formed by Au 8 clusters stabilized by macromolecules. [43][44][45][46][47] These materials show fluorescence with blue emission (400-500 nm) and quantum yields of 50 % and above. On the other hand, several gold clusters with molecular structures known from single-crystal analyses exhibit photoluminescence quantum yields of about 1 % or less.…”

A Visual Sensor Array for Pattern Recognition Analysis of Proteins Using Novel Blue-Emitting Fluorescent Gold Nanoclusters

“…This suggests the presence of Au 8 clusters according to the spherical Jellium model, 30 which are consistent with those of Au 8 nanoclusters reported in the previous studies. 31 Matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF MS) was performed to confirm the production of Au 8 clusters (see Figure S3 in the Supporting Information). The quantum yield (QY) was 3.1% and 4.2% (calibrated with quinoline as the reference), and the fluorescence lifetime was 2.65 and 5.82 ns for Col-Au NCs and Mac-Au NCs, respectively (see Figure S4 in the Supporting Information).…”

A facile one-pot synthesis of blue and red luminescent thiol stabilized gold nanoclusters: a thorough optical and microscopy study

“…Later Liu et al 25 extended this idea of using DMF as both a reducing and stabilizing agent at high temperature and they have succeeded in developing a surfactant-free recipe to synthesize highly stable and luminescent gold nanocluster. Recently, Yabu et al 26 reported a novel one-pot process for the synthesis of AuNC via simple reduction of Au ions by amino-terminated poly(1,2-butadiene) (PB-NH 2 ) in toluene. The synthesized AuNC show PL-emission at 465 nm upon excitation at 370 nm and were characterized as Au 8 clusters (from MALDI-TOF MS analysis).…”