2016
DOI: 10.1039/c5cc08635c
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Abstract: Photoluminescent carbon dots (CDs), hydrothermally prepared using tannic acid (TA), show visual aggregation induced emission enhancement (AIEE) properties at 455 nm when excited at 350 nm owing to the rotational hindering of the surface groups on CDs such as aromatic rings and phenolic hydroxyl ones, causing exponential decay between the ratio of the photoluminescence intensity in organic solvents to that in water and the permittivity of the solvent, and thus dazzling emissions of the CDs in the presence of so… Show more

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Cited by 75 publications
(46 citation statements)
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“…Compared with “turn off” sensor based on fluorescence quenching mechanism, “turn on” fluorescence sensors are more desirable due to the high selectivity and wider detection range (Wei et al, 2012 ). Recently, based on aggregation induced emission enhancement (AIEE), a novel class of fluorescence “turn on” sensors has been proposed (Liu et al, 2016 ; Wang et al, 2016 ; Xu et al, 2018 ). Xu et al ( 2018 ) prepared a fluorescent probe based on AIEE to selectively and sensitively detect Hg 2+ .…”
Section: Introductionmentioning
confidence: 99%
“…Compared with “turn off” sensor based on fluorescence quenching mechanism, “turn on” fluorescence sensors are more desirable due to the high selectivity and wider detection range (Wei et al, 2012 ). Recently, based on aggregation induced emission enhancement (AIEE), a novel class of fluorescence “turn on” sensors has been proposed (Liu et al, 2016 ; Wang et al, 2016 ; Xu et al, 2018 ). Xu et al ( 2018 ) prepared a fluorescent probe based on AIEE to selectively and sensitively detect Hg 2+ .…”
Section: Introductionmentioning
confidence: 99%
“…18 Recently, Liu et al also illustrated AIEE properties of the CDs hydrothermally prepared from tannic acid, induced by the addition of organic solvents with small permittivity, such as tetrahydrofuran. 17 However, in both cases, the aggregation caused a very little shi in the emission wavelength of CDs.…”
mentioning
confidence: 99%
“…15 The research in this eld has been recently expanded into exploring the AIE or AIEE effects on the emission enhancement of nanoparticles. [16][17][18] Gao et al rst reported that adenosine-5 0 -triphosphate induced aggregation of the CDs prepared from C 60 , which resulted in the enhanced photoluminescence. 18 Recently, Liu et al also illustrated AIEE properties of the CDs hydrothermally prepared from tannic acid, induced by the addition of organic solvents with small permittivity, such as tetrahydrofuran.…”
mentioning
confidence: 99%
“…N, S, and B) in CND synthesis showed that they could be effective in tuning PL properties . Other research has been carried out by considering changes in CND medium (solvent and pH) and temperature and demonstrated the importance of surface chemistry of particles . To some extent, the unusual PL properties of CNDs could be attributed to their high optical density (number of absorbing and emitting species per unit volume of solution) of the as‐prepared CNDs that causes the reabsorption of emitted light by lower energy transitions and results in a shift to longer wavelength emissions .…”
Section: Introductionmentioning
confidence: 99%
“…Other research has been carried out by considering changes in CND medium (solvent and pH) and temperature and demonstrated the importance of surface chemistry of particles . To some extent, the unusual PL properties of CNDs could be attributed to their high optical density (number of absorbing and emitting species per unit volume of solution) of the as‐prepared CNDs that causes the reabsorption of emitted light by lower energy transitions and results in a shift to longer wavelength emissions . Some attempts have been made to tune the size and surface chemistry of CNDs by controlling the reaction conditions at the time and/or after synthesis …”
Section: Introductionmentioning
confidence: 99%