title: Development of upconversion luminescent probe for ratiometric sensing and bioimaging of hydrogen sulfide.
abstract: Merocyanines adsorbed into the mesopores of mSiO2 shell of NaYF4: 20% Yb, 2% Er, 0.2% Tm nanocrystals are demonstrated as ratiometric upconversion luminescence (UCL) probe for highly selective detection of HS(-) in living cells through inhibition of energy transfer from the UCL of the nanocrystals to the absorbance of the merocyanines. The UCL probe has been used for ratiometric sensing of H2S with high sensitivity and selectivity.
authors.affiliation: Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications (NUPT) , 9 Wenyuan Road, Nanjing 210023, P. R. China.
authors.forename: Shujuan
authors.initials: S
authors.lastname: Liu
authors.forename: Lili
authors.initials: L
authors.lastname: Zhang
authors.forename: Tianshe
authors.initials: T
authors.lastname: Yang
authors.forename: Huiran
authors.initials: H
authors.lastname: Yang
authors.forename: Kenneth Yin
authors.initials: KY
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Zhao
authors.forename: Wen
authors.initials: W
authors.lastname: Lv
authors.forename: Qi
authors.initials: Q
authors.lastname: Yu
authors.forename: Xinglin
authors.initials: X
authors.lastname: Zhang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhao
authors.forename: Xiangmei
authors.initials: X
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
mesh_terms: D001578:Benzopyrans / Q000737:chemistry*; D006367:HeLa Cells; D006801:Humans; D006862:Hydrogen Sulfide / Q000378:metabolism*; D007211:Indoles / Q000737:chemistry*; D049449:Luminescence; D057054:Molecular Imaging / Q000379:methods*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D001578:Benzopyrans; D007211:Indoles; C548873:merocyanine; D012822:Silicon Dioxide; D006862:Hydrogen Sulfide