Extracellular microbial synthesis of biocompatible CdTe quantum dots

Bao, Haifeng; Lu, Zhisong; Cui, Xiaoqiang; Qiao, Yan; Guo, Jun; Anderson, James M.; Li, Chang Ming

doi:10.1016/j.actbio.2010.03.030

Cited by 172 publications

(88 citation statements)

References 48 publications

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“…Firstly, the nucleation of 1-thioglycerol-coated CdTe nanocrystals occurred in the reaction system as described in our previous works [20][21][22][23][24]. Then, the graphene oxide suspension was added under stirring to allow formation of hydrogen bonds between CdTe nanocrystals and graphene oxide.…”

Section: Synthesis Of Graphene-cdte Qd Composed Nanosheetsmentioning

confidence: 99%

One-step aqueous synthesis of graphene–CdTe quantum dot-composed nanosheet and its enhanced photoresponses

Guo

Yang

et al. 2011

Journal of Colloid and Interface Science

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Section: Synthesis Of Graphene-cdte Qd Composed Nanosheetsmentioning

confidence: 99%

One-step aqueous synthesis of graphene–CdTe quantum dot-composed nanosheet and its enhanced photoresponses

Guo

Yang

et al. 2011

Journal of Colloid and Interface Science

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“…All these environmentally friendly approaches are achieved at ambient temperatures. However, complicated procedures are required to isolate the intracellularly grown QDs and the photoluminescence of these biosynthesized QDs has been seldom reported [26][27][28]. Therefore, it is of great importance to develop a simple and cheap biosynthesis approach which can prepare highly fluorescent QDs with uniform size and extend their biological applications, especially for CdTe QDs-one of the most popular nanocrystals.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of biocompatible cadmium telluride quantum dots using yeast cells

et al. 2010

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We demonstrate a simple and efficient biosynthesis method to prepare easily harvested biocompatible cadmium telluride (CdTe) quantum dots (QDs) with tunable fluorescence emission using yeast cells. Ultraviolet-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM) confirm that the CdTe QDs are formed via an extracellular growth and subsequent endocytosis pathway and have size-tunable optical properties with fluorescence emission from 490 to 560 nm and a cubic zinc blende structure with good crystallinity. In particular, the CdTe QDs with uniform size (2-3.6 nm) are protein-capped, which makes them highly soluble in water, and in situ bio-imaging in yeast cells indicates that the biosynthesized QDs have good biocompatibility. This work provides an economic and environmentally friendly approach to synthesize highly fluorescent biocompatible CdTe QDs for bio-imaging and bio-labeling applications. KEYWORDSCadmium telluride (CdTe) quantum dots, biosynthesis, biocompatible, in situ bio-imaging

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“…Li et al showed in-situ CdS nanoparticles (8 nm) synthesis and via bacterial cellulose (BC) nanofi bers [ 36 ]. In another study, Bao et al showed biosynthesis of CdTe quantum dots using E. coli [ 37 ] and yeast cells. In this process, yeast secreted proteins coordinated with Cd 2 + and Te 2 + ions forming caps on the surface of the QDs (~3 nm) thereby improving the biocompatibility as well as high fl uorescent properties as shown in Fig.…”

Section: Bacteria and Yeastmentioning

confidence: 97%

Nanoparticle Synthesis by Biogenic Approach

Srivastava

Ogino

Kondo

2015

Green Processes for Nanotechnology

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Biological synthesis of nanoparticles has been present in living organisms over the course of evolution to serve a variety of purposes. In this chapter, we discuss the latest trends and application for nanoparticle synthesis via plants, algae, yeast, bacteria, fungi, etc. There exists several review articles among others documenting studies about various biogenic sources and associated nanoparticle synthesis; we have rather emphasized on recent research works which probed into novel applications of these bio-nanoparticles along with some important historical fi ndings. Also, we have discussed the challenges faced by biogenic methods along with possible areas to tweak in order to standardize this synthesis technique. Biogenic synthesis of nanoparticles has the potential to provide cost-effective, eco-friendly alternative to work as "biological nanofactories"/functionalization method once the attention has been shifted to understand the underlying mechanism, its in vitro replication and obtaining shape/size control over the nanoparticles being synthesized.

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Extracellular microbial synthesis of biocompatible CdTe quantum dots

Cited by 172 publications

References 48 publications

One-step aqueous synthesis of graphene–CdTe quantum dot-composed nanosheet and its enhanced photoresponses

One-step aqueous synthesis of graphene–CdTe quantum dot-composed nanosheet and its enhanced photoresponses

Biosynthesis of biocompatible cadmium telluride quantum dots using yeast cells

Nanoparticle Synthesis by Biogenic Approach

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