Aqueous synthesis of color tunable Cu doped Zn–In–S/ZnS nanoparticles in the whole visible region for cellular imaging

Jiang, Tongtong; Song, Jiangluqi; Wang, Huijie; Ye, Xuecheng; Wang, Hao; Zhang, Wenting; Yang, Mingya; Xia, Ruixiang; Zhu, Lingjun; Xu, Xin­guang

doi:10.1039/c4tb01957a

Cited by 85 publications

(78 citation statements)

References 34 publications

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“…22 The (CuInZn)S2 quaternary alloy nanocrystals have a significantly higher FWHM, which is to be expected based on their highly irregular shapes. 19 The low photoluminescence intensity of the as-synthesized CuInS2 nanocrystals is most likely due to the presence of surface trap states that lead to non-radiative recombination pathways, 11 and cause the short lifetimes reported in Fig. 6.…”

Section: Discussionmentioning

confidence: 99%

“…In a few cases, (CuInZn)S2 quaternary alloys have been formed by also adding zinc acetate or zinc chloride. 19,20 Commonly used capping agents include MPA, glutathione, and Lcysteine. Many groups have successfully applied the resulting materials for bioimaging of cancer cells.…”

Section: Introductionmentioning

confidence: 99%

“…Jiang et al have reported a significant blue-shift in the optical properties for (CuInZn)S2 nanocrystals having a small indium content rela-tive to zinc. 19 The low indium content in addition to high zinc content in the alloy sample may play a dominant role in determining the optical properties as opposed to size quanti-zation in this case. Fig.…”

mentioning

confidence: 99%

“…22 Several groups have also reported that the mixed quaternary (CuInZn)S2 alloy shows improved photoluminescence pro-perties over CuInS2 nanocrystals. 19,60,61 To determine whether biomineralization with CSE was capable of producing a qua-ternary alloy, we simultaneously added zinc acetate and copper acetate to a solution of 4 mM indium acetate, 32 mM L-cysteine, and 0.2 mg mL − 1 CSE which had been incubated for 4 hours. Fig.…”

mentioning

confidence: 99%

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Enzymatic biomineralization of biocompatible CuInS₂, (CuInZn)S₂and CuInS₂/ZnS core/shell nanocrystals for bioimaging

Spangler

Chu

et al. 2017

Nanoscale

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a This work demonstrates a bioenabled fully aqueous phase and room temperature route to the synthesis of CuInS2/ZnS core/shell quantum confined nanocrystals conjugated to IgG antibodies and used for fluorescent tagging of THP-1 leukemia cells. This elegant, straightforward and green approach avoids the use of solvents, high temperatures and the necessity to phase transfer the nanocrystals prior to appli-cation.Non-toxic CuInS2, (CuInZn)S2, and CuInS2/ZnS core/shell quantum confined nanocrystals are synthesized via a biomineralization process based on a single recombinant cystathionine γ-lyase (CSE) enzyme. First, soluble In-S complexes are formed from indium acetate and H2S generated by CSE, which are then stabilized by L-cysteine in solution. The subsequent addition of copper, or both copper and zinc, precursors then results in the immediate formation of CuInS2 or (CuInZn)S2 quantum dots. Shell growth is realized through subsequent introduction of Zn acetate to the preformed core nanocrystals. The size and optical properties of the nanocrystals are tuned by adjusting the indium precursor concentration and initial incubation period. CuInS2/ZnS core/shell particles are conjugated to IgG antibodies using EDC/NHS crosslinkers and then applied in the bioimaging of THP-1 cells. Cytotoxicity tests confirm that CuInS2/ ZnS core/shell quantum dots do not cause cell death during bioimaging. Thus, this biomineralization enabled approach provides a facile, low temperature route for the fully aqueous synthesis of non-toxic CuInS2/ZnS quantum dots, which are ideal for use in bioimaging applications.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Enzymatic biomineralization of biocompatible CuInS₂, (CuInZn)S₂and CuInS₂/ZnS core/shell nanocrystals for bioimaging

Spangler

Chu

et al. 2017

Nanoscale

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“…[1,3,9] However,t heir hydrophobic property limits their application in the field of biology.O n the other hand, the transition from hydrophobic QDs into hydrophilic QDs through al igand-exchange process caused a dramatic decrease of the QY from 41 to 17 %. [11] In response to the policy of green chemistry,v ariousa pproaches have been employed to synthesize CIZS QDs directly in aqueous solution, such as microwave processing, [12] hydrothermal treatment, [13] a one-pot method, [14] and so on. However,a queous-phase synthesis of tunable CIZS QDs with high luminescence performance in an efficient pathway,w hichi ss uitable for largescale production,s till remains at remendous challengeb ecause of the low synthesis temperature.…”

Section: Introductionmentioning

confidence: 99%

Room‐Temperature Ionic‐Liquid‐Assisted Microwave Preparation of Tunable Photoluminescent Copper‐Indium‐Zinc‐Sulfide Quantum Dots

Chen

Wang

et al. 2018

Chemistry A European J

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A facile approach towards photoluminescent (PL) Cu-In-Zn-S quantum dots (CIZS QDs) has been developed, comprising microwave treatment with the assist of room-temperature ionic liquid (RTIL). Because of its high polarizability, RTIL served as a microwave absorbent, which resulted in the increase of the instantaneous nucleation rate and the rapid synthesis of CIZS QDs at low temperature. Moreover, the surface decoration of QDs with RTIL can passivate the surface defects greatly. The PL intensity of the CIZS QDs depends on the anion species, alkyl chain length of the RTIL, and the metal element ratios of the QDs. On the basis of the variable PL peak position and extended luminescence lifetime of the CIZS QDs, the superior emission behavior of the QDs was confirmed by surface etching with fluoride produced by the hydrolysis of RTIL 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF ). Moreover, the intermediate alkyl chain length of the RTIL can avoid aggregation, which results in the construction of CIZS QDs with homogenous size distribution. The shape-controlled CIZS QDs show a broadened tunable emission peak from 677 to 579 nm compared with that of QDs prepared by a conventional one-pot method by mixing the raw materials. CIZS QDs also exhibit a high quantum yield (QY) of 24.1 % after coating with a ZnS shell. This method is expected to be a useful technique for the rapid synthesis of multiple QDs with a wider range of emission wavelengths and higher QY for a variety of applications.

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Ligand Exchange and Impurity Doping in 2D CdSe Nanoplatelet Thin Films and Their Applications

Lee

Kang

Sharma

et al. 2021

Adv Elect Materials

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The effects of halide‐ligand exchange and Cu and Ag doping are studied on structural, optical, and electrical properties of four monolayer CdSe nanoplatelet (NPL) and NPL thin films. Combinational study shows that NH4Cl‐treatment on CdSe NPL and NPL thin films show tetragonal lattice distortion of NPL, side‐to‐side attachment between NPLs, bathochromic shift in absorption spectra, and complete quenching of band‐edge and dopant‐induced emissions. First‐principle calculations reveal that Cl creates states below valence band maximum while Ag and Cu dopants create acceptor‐like states, explaining the change of their optical property. Field‐effect transistors are fabricated to investigate the effect of doping and reduced interplatelet distance on electrical properties of CdSe NPL thin films, demonstrating Cu and Ag dopants mitigate n‐type character of CdSe NPL thin films. Temperature‐dependent electrical characterization is conducted to further understand charge transport behavior depending on the existence of dopants. This work provides scientific information on the influence of surface chemistry and impurity doping on quantum confined semiconductors and new directions for the design of high‐performance nanomaterial‐based electronic and optoelectronic devices.

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Aqueous synthesis of color tunable Cu doped Zn–In–S/ZnS nanoparticles in the whole visible region for cellular imaging

Abstract: Cu doped Zn–In–S/ZnS QDs were synthesized for labeling the cytoplasm and their multiple peak emission mechanisms were proposed.

Cited by 85 publications

References 34 publications

Enzymatic biomineralization of biocompatible CuInS₂, (CuInZn)S₂and CuInS₂/ZnS core/shell nanocrystals for bioimaging

Enzymatic biomineralization of biocompatible CuInS₂, (CuInZn)S₂and CuInS₂/ZnS core/shell nanocrystals for bioimaging

Room‐Temperature Ionic‐Liquid‐Assisted Microwave Preparation of Tunable Photoluminescent Copper‐Indium‐Zinc‐Sulfide Quantum Dots

Ligand Exchange and Impurity Doping in 2D CdSe Nanoplatelet Thin Films and Their Applications

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Aqueous synthesis of color tunable Cu doped Zn–In–S/ZnS nanoparticles in the whole visible region for cellular imaging

Abstract: Cu doped Zn–In–S/ZnS QDs were synthesized for labeling the cytoplasm and their multiple peak emission mechanisms were proposed.

Cited by 85 publications

References 34 publications

Enzymatic biomineralization of biocompatible CuInS2, (CuInZn)S2and CuInS2/ZnS core/shell nanocrystals for bioimaging

Enzymatic biomineralization of biocompatible CuInS2, (CuInZn)S2and CuInS2/ZnS core/shell nanocrystals for bioimaging

Room‐Temperature Ionic‐Liquid‐Assisted Microwave Preparation of Tunable Photoluminescent Copper‐Indium‐Zinc‐Sulfide Quantum Dots

Ligand Exchange and Impurity Doping in 2D CdSe Nanoplatelet Thin Films and Their Applications

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Enzymatic biomineralization of biocompatible CuInS₂, (CuInZn)S₂and CuInS₂/ZnS core/shell nanocrystals for bioimaging

Enzymatic biomineralization of biocompatible CuInS₂, (CuInZn)S₂and CuInS₂/ZnS core/shell nanocrystals for bioimaging