Catalytic gold nanoparticles for fluorescent detection of mercury(II) and lead(II) ions

Metal-enhanced fluorescence effect of Ag and Au nanoparticles modified with rhodamine derivative in detecting Hg2+

“…The luminescence property of chromophores in the presence of noblemetal nanoparticles was mainly discussed in the reported articles. And most of the reported MEF materials required complicated synthetic procedures and careful surface modification, which limit their further application [22][23][24][25][26][27][28][29]. Our group had prepared two chemosensors, in which metal mesoporous materials containing Ag and Au NPs were used as the carrier functionalized by rhodamine derivative R [30,31].…”

A highly selective and sensitive fluorescent sensor for the rapid detection of Hg2+ based on phenylamine-oligothiophene derivative

“…Among the various assays that are available for the detection of cations, the techniques based on fluorescence sensors present a number of appealing advantages in terms of high sensitivity and selectivity, low cost, facile operation, response time, local observation and the wide spread availability of equipment for analysis [5][6][7]. A great number of scientific endeavors have focused on the development of fluorescent chemosensors for Hg 2+ such as small molecules [8][9][10][11][12][13][14][15][16][17], conjugated polymers [18,19], nanoparticles [20][21][22][23], and biomolecules [24][25][26]. However, some of them still suffer from practical use, including crosssensitivities toward other metal ions, narrow pH span, delayed response and so on.…”

Sensitive detection of mercury (II) ion using wave length-tunable visible-emitting gold nanoclusters based on protein-templated synthesis

“…In addition, the LOD is lower than the maximum level (10 nM) of mercury permitted in drinking water by the US Environmental Protection Agency (EPA). 80 Therefore, the observed quenching effect can be used to monitor the concentration of Hg 21 . natural systems, real water samples such as tap water and river water were analyzed using our Hg 21 -sensing system.…”