2018
DOI: 10.1002/cnma.201800125
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Abstract: The synthesis and stabilization of blue‐emitting nanoclusters (Au, Cu or Ag) are very challenging. We have developed a facile, acid‐induced protocol to synthesize blue‐emitting Au NCs (B‐NCs) in aqueous medium at room temperature from green‐emitting ones (G‐NCs). The rapid quenching of the blue emission was successfully arrested, and in fact enhanced, by the incorporation of the NCs in a bile acid derived metallohydrogel, demonstrating the special effect of the gel medium. The NCs in both solution and gel were… Show more

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Cited by 8 publications
(6 citation statements)
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“…Examples include the use of Ca-doped Cd-cholate hydrogel in the presence of Na 2 SeSO 3 as a template for synthesizing yellow-emitting CdSe quantum dots at room temperature 30b and enhancement of the emission and stability of blue emitting nano clusters by incorporating them into a zinc-cholate hydrogel. 38 The hybrid materials involving steroidal metallogels may find great potential in designing optoelectronic devices, in photocatalysis, or in biomedical and sensor applications.…”
Section: Metallogels Formed By Bile Saltsmentioning
confidence: 99%
“…Examples include the use of Ca-doped Cd-cholate hydrogel in the presence of Na 2 SeSO 3 as a template for synthesizing yellow-emitting CdSe quantum dots at room temperature 30b and enhancement of the emission and stability of blue emitting nano clusters by incorporating them into a zinc-cholate hydrogel. 38 The hybrid materials involving steroidal metallogels may find great potential in designing optoelectronic devices, in photocatalysis, or in biomedical and sensor applications.…”
Section: Metallogels Formed By Bile Saltsmentioning
confidence: 99%
“…24 In another report, Maitra and coworkers tuned the photophysical properties of green-emitting CuNCs to blue-emitting CuNCs by changing the pH of the solution from basic to acidic. 25 Modulation of the photophysical properties of MNCs by varying the pH enables multiple applications in various domains including the sensing of analytes, highly specific bio-markers, pH-triggered tuning of the optical signature of MNCs, etc . The imbalance of pH in an organism creates major changes in the concentration of essential ions and hence the detection and quantification of these ions is vital.…”
Section: Introductionmentioning
confidence: 99%
“…When the stability of a green light-emitting NC (G-NC) synthesized by Maitra et al from 3-mercaptopropionic acid or LNa + protected NCs was investigated in an acidic medium (acetic acid), it transformed into a blue light-emitting NC (B-NC). 37 Figure 2 shows the transformation of the G-NC under a 365 nm UV lamp in the presence of 2.6 mM acetic acid. The UV−vis absorption spectra of these NCs nearly overlapped with each other, and the emission spectrum of B-NC showed a blue shift as well as a reduction in emission intensity compared to that of the G-NC.…”
mentioning
confidence: 99%
“…The transformations of NCs from one size to another induced by a change in pH are discussed in this section. When the stability of a green light-emitting NC (G-NC) synthesized by Maitra et al from 3-mercaptopropionic acid or LNa + protected NCs was investigated in an acidic medium (acetic acid), it transformed into a blue light-emitting NC (B-NC) Figure shows the transformation of the G-NC under a 365 nm UV lamp in the presence of 2.6 mM acetic acid.…”
mentioning
confidence: 99%
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