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Propeller‐Like Nanorod‐Upconversion Nanoparticle Assemblies with Intense Chiroptical Activity and Luminescence Enhancement in Aqueous Phase
Author(s) -
Wu Xiaoling,
Xu Liguang,
Ma Wei,
Liu Liqiang,
Kuang Hua,
Kotov Nicholas A.,
Xu Chuanlai
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201601261
Subject(s) - luminescence , nanorod , nanotechnology , materials science , bioanalysis , nanoparticle , photon upconversion , circular dichroism , phase (matter) , nanoscopic scale , optoelectronics , crystallography , chemistry , organic chemistry
Propeller‐like nanoscale assemblies with exceptionally intense chiroptical activity and strong luminescence are prepared using gold nanorods and upconversion nanoparticles. The circular dichroism intensity of the tetramer reached 80.9 mdeg, with g ‐factor value of 2.1 × 10 –2 . The enhancement factor of upconversion luminescence is as high as 21.3 in aqueous phase. Attomolar bioanalysis of a cancer biomarker with two model is also achieved, showing potential for early disease diagnosis and environmental monitoring.