Premium
Polyethyleneimine/Manganese‐Doped ZnS Nanocomposites: A Multifunctional Probe for Two‐Color Imaging and Three‐Dimensional Sensing
Author(s) -
Sang LiJia,
Wu YeYu,
Wang HeFang
Publication year - 2013
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201300049
Subject(s) - nanocomposite , photoluminescence , materials science , wavelength , doping , manganese , optoelectronics , scattering , excited state , optics , nanotechnology , physics , nuclear physics , metallurgy
We present herein a new single probe, polyethyleneimine (PEI)/MnZnS nanocomposite, for two‐color imaging and three‐dimensional sensing. The PEI/MnZnS nanocomposite possesses unique, individually excited, two‐color, photoluminescence (PL) emissions at λ =495 and 585 nm; this allows two‐color imaging of the same space just by changing the excitation wavelength in situ. Moreover, the two PL bands of the nanocomposite are orthogonal, which allows the discrimination of eight proteins just by recording the three‐channel optical signals of the single probe. The two PL bands of the PEI/MnZnS composite are capable of distinguishing eight proteins at 0.5 μ M , whereas the three‐channel signals (two PL bands and light scattering) can discriminate these proteins at no less than 0.25 μ M .