Organosilane-functionalized graphene quantum dots and their encapsulation into bi-layer hollow silica spheres for bioimaging applications

We demonstrate an affordable method to fabricate organosilane-functionalized graphene quantum dots and their encapsulation into bi-layer hollow silica spheres for bioimaging applications.

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Highly efficient and stable CsPbBr3 perovskite quantum dots by encapsulation in dual-shell hollow silica spheres for WLEDs

Inorganic Chemistry Frontiers ◽

10.1039/d0qi00208a ◽

2020 ◽

Vol 7 (10) ◽

pp. 2060-2071 ◽

Cited By ~ 3

Author(s):

Lei Qiu ◽

Hang Yang ◽

Zhigao Dai ◽

Fengxu Sun ◽

Jiarui Hao ◽

...

Keyword(s):

Quantum Dots ◽

Silica Spheres ◽

Silica Nanospheres ◽

Hollow Silica ◽

Highly Efficient ◽

Hollow Silica Spheres ◽

Direct Exposure ◽

Perovskite Quantum Dots ◽

Hollow Silica Nanospheres

A highly stable and efficient CsPbBr3@SiO2 composite phosphor is achieved by protecting the CsPbBr3 QDs from direct exposure to the atmosphere by encapsulating CsPbBr3 into dual-shell hollow silica nanospheres.

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NiAg-graphene quantum dot-graphene hybrid with high oxidase-like catalytic activity for sensitive colorimetric detection of malathion

New Journal of Chemistry ◽

10.1039/d1nj00621e ◽

2021 ◽

Author(s):

Xu Dan ◽

Ruiyi Li ◽

Qinsheng Wang ◽

Yongqiang Yang ◽

Haiyan Zhu ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Oxide ◽

Catalytic Activity ◽

Quantum Dot ◽

Colorimetric Detection ◽

Graphene Quantum Dots ◽

Functionalized Graphene ◽

Graphene Quantum Dot ◽

Nickel Silver

The paper reports the synthesis of nickel-silver-graphene quantum dot-graphene hybrid. Histidine-functionalized graphene quantum dots (His-GQDs) were bonded to graphene oxide (GO) and then combined with Ni2+ and Ag+ to form...

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Photoluminescence suppression effect caused by histamine on amino-functionalized graphene quantum dots with the mediation of Fe 3+ , Cu 2+ , Eu 3+ : Application in the analysis of spoiled tuna fish

Microchemical Journal ◽

10.1016/j.microc.2017.04.013 ◽

2017 ◽

Vol 133 ◽

pp. 448-459 ◽

Cited By ~ 14

Author(s):

Carlos A.T. Toloza ◽

Sarzamin Khan ◽

Renan L.D. Silva ◽

Eric C. Romani ◽

Dunieskys G. Larrude ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Quantum Dots ◽

Functionalized Graphene ◽

Tuna Fish ◽

Suppression Effect

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Tumor Cell-Specific Nuclear Targeting of Functionalized Graphene Quantum Dots In Vivo

Bioconjugate Chemistry ◽

10.1021/acs.bioconjchem.7b00466 ◽

2017 ◽

Vol 28 (10) ◽

pp. 2608-2619 ◽

Cited By ~ 11

Author(s):

Chenjie Yao ◽

Yusong Tu ◽

Lin Ding ◽

Chenchen Li ◽

Jiao Wang ◽

...

Keyword(s):

Quantum Dots ◽

Tumor Cell ◽

Graphene Quantum Dots ◽

Functionalized Graphene ◽

Nuclear Targeting

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One-Pot Preparation of Hollow Silica Spheres by Using Thermosensitive Poly(N-isopropylacrylamide) as a Reversible Template

Langmuir ◽

10.1021/la902531p ◽

2009 ◽

Vol 25 (20) ◽

pp. 12367-12373 ◽

Cited By ~ 52

Author(s):

Binyang Du ◽

Zheng Cao ◽

Zhenbing Li ◽

Aixiong Mei ◽

Xinghong Zhang ◽

...

Keyword(s):

Silica Spheres ◽

One Pot ◽

Hollow Silica ◽

Hollow Silica Spheres

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L-cysteine functionalized graphene quantum dots for sub-ppb detection of As (III)

Nanotechnology ◽

10.1088/1361-6528/ac353b ◽

2021 ◽

Author(s):

Md. Farhan Naseh ◽

Neelam Singh ◽

Jamilur R. Ansari ◽

Ashavani Kumar ◽

Tapan Sarkar ◽

...

Keyword(s):

Electron Microscopy ◽

Quantum Dots ◽

Room Temperature ◽

Graphene Quantum Dots ◽

Optical Characterization ◽

Functionalized Graphene ◽

Transmission Electron ◽

Sensitivity And Selectivity ◽

Structural Characterizations

Abstract Here, we report functionalized graphene quantum dots (GQDs) for the optical detection of arsenic at room temperature. GQDs with the fluorescence of three fundamental colors (red, green, and blue) were synthesized and functionally capped with L-cysteine (L-cys) to impart selectively towards As (III) by exploiting the affinity of L-cys towards arsenite. The optical characterization of GQDs was carried out using UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy, and fluorescence spectrometry and the structural characterizations were performed using transmission electron microscopy. The fluorescence results showed instantaneous quenching in intensity when the GQDs came in contact with As (III) for all test concentrations over a range from 0.025 ppb to 25 ppb, which covers the permissible limit of arsenic in drinking water. The experimental results suggested excellent sensitivity and selectivity towards As (III).

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