Bio-templated CdSe quantum dots green synthesis in the functional protein, lysozyme, and biological activity investigation

Wang, Qisui; Li, Song; Liu, Peng; Min, Xinmin

doi:10.1016/j.matchemphys.2012.10.005

Cited by 8 publications

(5 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, in contrast to DNA-functionalized QDs, peptide and protein-functionalized NCs have to be synthesized under mild conditions to avoid denaturing of the peptide and protein ligands. Up to now, peptides and proteins have been used as surface ligands to synthesize QDs such as Ag 2 S, ,, ZnSe, ZnS:Mn, Cd(S,Se,Te), ,,,,,,,,, PbS, HgS, and Zn x Hg 1– x Se under ambient conditions (more detail in section ). It was also claimed that the function of the protein/peptide on the QDs could be retained, which makes the above approach valuable for the facile formation of biospecific nanoprobes based on QDs.…”

Section: Bioapplications Of Semiconductor Ncsmentioning

confidence: 99%

“…Similarly, lysozyme (Lyz) was also used as stabilizing agent in the aqueous synthesis of CdSe QDs at room temperature and pH 11. 492 Lyz is a small monomeric globular protein containing 129 tactic amino residues including six tryptophans, three tyrosines, and four disulfide bonds, which can potentially bind with metal ions to offer the resulting QDs colloidal stability. Upon the reaction between Se 2− and Cd 2+ /Lyz complexes, CdSe QDs exhibiting emission at 570 nm were obtained.…”

Section: Chemical Reviewsmentioning

confidence: 99%

See 1 more Smart Citation

Aqueous Based Semiconductor Nanocrystals

et al. 2016

View full text Add to dashboard Cite

This review summarizes traditional and recent nonconventional, bioinspired, methods for the aqueous synthesis of colloidal semiconductor quantum dots (QDs). The basic chemistry concepts are critically emphasized at the very beginning as these are strongly correlated with the selection of ligands and the optimal formation of aqueous QDs and their more sophisticated structures. The synergies of biomimetic and biosynthetic methods that can combine biospecific reactivity with the robust and strong optical responses of QDs have also resulted in new approaches to the synthesis of the nanoparticles themselves. A related new avenue is the recent extension of QD synthesis to form nanoparticles endowed with chiral optical properties. The optical characteristics of QD materials and their advanced forms such as core/shell heterostructures, alloys, and doped QDs are discussed: from the design considerations of optical band gap tuning, the control and reduction of the impact of surface traps, the consideration of charge carrier processes that affect emission and energy and charge transfer, to the impact and influence of lattice strain. We also describe the considerable progress in some selected QD applications such as in bioimaging and theranostics. The review concludes with future strategies and identification of key challenges that still need to be resolved in reaching very attractive, scalable, yet versatile aqueous syntheses that may widen the scope of commercial applications for semiconductor nanocrystals.

show abstract

Section: Bioapplications Of Semiconductor Ncsmentioning

confidence: 99%

Section: Chemical Reviewsmentioning

confidence: 99%

Aqueous Based Semiconductor Nanocrystals

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Surface modification on NPs is a commonly used technique to tailor the physical, chemical, and biological properties of NPs in order to improve the desired properties and eliminate shortfalls [25, 26, 27]. Most of the study on surface modification of ZnO NPs have been done to alter the intrinsic properties of ZnO NPs [28, 29, 30], rather than to reduce its toxicity.…”

Section: Introductionmentioning

confidence: 99%

Reducing ZnO nanoparticles toxicity through silica coating

Chia

Leong

2016

Heliyon

View full text Add to dashboard Cite

ZnO NPs have good antimicrobial activity that can be utilized as agents to prevent harmful microorganism growth in food. However, the use of ZnO NPs as food additive is limited by the perceived high toxicity of ZnO NPs in many earlier toxicity studies. In this study, surface modification by silica coating was used to reduce the toxicity of ZnO NPs by significantly reducing the dissolution of the core ZnO NPs. To more accurately recapitulate the scenario of ingested ZnO NPs, we tested our as synthesized ZnO NPs in ingestion fluids (synthetic saliva and synthetic gastric juice) to determine the possible forms of ZnO NPs in digestive system before exposing the products to colorectal cell lines. The results showed that silica coating is highly effective in reducing toxicity of ZnO NPs through prevention of the dissociation of ZnO NPs to zinc ions in both neutral and acidic condition. The silica coating however did not alter the desired antimicrobial activity of ZnO NPs to E. coli and S. aureus. Thus, silica coating offered a potential solution to improve the biocompatibility of ZnO NPs for applications such as antimicrobial agent in foods or food related products like food packaging. Nevertheless, caution remains that high concentration of silica coated ZnO NPs can still induce undesirable cytotoxicity to mammalian gut cells. This study indicated that upstream safer-by-design philosophy in nanotechnology can be very helpful in a product development.

show abstract

“…Specifically, they observed a raise from 0.6% to 1.05% in QDSSC’ PCE when a CdS layer is sandwiched between TiO 2 and CdSe outer layers. Several publications on the electric transport researched inside QDSSCs based on TG spectra have proved that the tandem (or parallel or cophotosensitive) structure, as can be seen in Figure 5 a, leads to more photon absorption and hence more exciton generation [ 112 , 113 ].…”

Section: Qdsscs Based On a Photoanode With Multilayer Qdsmentioning

confidence: 99%

Quantum Dot Sensitized Solar Cell: Photoanodes, Counter Electrodes, and Electrolytes

et al. 2021

View full text Add to dashboard Cite

In this study, we provide the reader with an overview of quantum dot application in solar cells to replace dye molecules, where the quantum dots play a key role in photon absorption and excited charge generation in the device. The brief shows the types of quantum dot sensitized solar cells and presents the obtained results of them for each type of cell, and provides the advantages and disadvantages. Lastly, methods are proposed to improve the efficiency performance in the next researching.

show abstract

Bio-templated CdSe quantum dots green synthesis in the functional protein, lysozyme, and biological activity investigation

Cited by 8 publications

References 45 publications

Aqueous Based Semiconductor Nanocrystals

Aqueous Based Semiconductor Nanocrystals

Reducing ZnO nanoparticles toxicity through silica coating

Quantum Dot Sensitized Solar Cell: Photoanodes, Counter Electrodes, and Electrolytes

Contact Info

Product

Resources

About