Fluorescent CdTe-QD-encoded nanocellulose microspheres by green spraying method

Guan, Qingshun; Song, Ruyuan; Wu, Weibing; Zhang, Lei; Jing, Yi; Fang, Guigan

doi:10.1007/s10570-018-2065-z

Cited by 16 publications

(4 citation statements)

References 45 publications

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“…Although most of the researchers have used fluorescent dye molecules to prepare composite fluorescence microspheres, 20 , 21 they have issues like unstable optical properties, narrow excitation, and wide emission wavelength. 22 To avoid these problems, we have selected CsPbBr 3 PQDs because they have exceptional photovoltaic and optoelectronic properties. 23 , 24 , 25 However, when exposed to light, heat or moister these PQDs show poor stability which limit their potential applications.…”

Section: Introductionmentioning

confidence: 99%

Development of structure-tailored and composite magnetic-fluorescent microspheres through the PRI method

Yang,

Javed,

et al. 2024

iScience

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Section: Introductionmentioning

confidence: 99%

Development of structure-tailored and composite magnetic-fluorescent microspheres through the PRI method

Yang,

Javed,

et al. 2024

iScience

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“…CNFs can be utilized as an independent functional material or as a supporting component to fabricate nanocomposite materials [ 8 ]. Furthermore, CNFs have unique morphology and excellent structural properties, including a large number of surface-reactive groups, which enable modification through covalent bonding, physical adsorption, or surface graft polymerization to further enhance performance [ 1 , 9 , 10 , 11 ]. Recently, many articles have been published on the production, modification, and application of CNFs ([ 8 ] and references therein).…”

Section: Introductionmentioning

confidence: 99%

The Fast and One-Step Growth of ZnO Nanorods on Cellulose Nanofibers for Highly Sensitive Photosensors

Alvi,

Mulla,

Abitbol

et al. 2023

Nanomaterials

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Cellulose is the most abundant organic material on our planet which has a key role in our daily life (e.g., paper, packaging). In recent years, the need for replacing fossil-based materials has expanded the application of cellulose and cellulose derivatives including into electronics and sensing. The combination of nanostructures with cellulose nanofibers (CNFs) is expected to create new opportunities for the development of innovative electronic devices. In this paper, we report on a single-step process for the low temperature (<100 °C), environmentally friendly, and fully scalable CNF-templated highly dense growth of zinc oxide (ZnO) nanorods (NRs). More specifically, the effect of the degree of substitution of the CNF (enzymatic CNFs and carboxymethylated CNFs with two different substitution levels) on the ZnO growth and the application of the developed ZnO NRs/CNF nanocomposites in the development of UV sensors is reported herein. The results of this investigation show that the growth and nature of ZnO NRs are strongly dependent on the charge of the CNFs; high charge promotes nanorod growth whereas with low charge, ZnO isotropic microstructures are created that are not attached to the CNFs. Devices manufactured via screen printing/drop-casting of the ZnO NRs/CNF nanocomposites demonstrate a good photo-sensing response with a very stable UV-induced photocurrent of 25.84 µA. This also exhibits excellent long-term stability with fast ON/OFF switching performance under the irradiance of a UV lamp (15 W).

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“…New generation luminescent nanocellulose-based composites and hybrid materials have found numerous application in optoelectronics (Dias et al 2020;Vicente et al 2018;Yang et al 2018), organic light-emitting diodes (OLEDs) (Zhang et al 2019), biosensors and detectors for monitoring environment and/or food quality control (Dai et al 2020;Wang et al 2020), biomedicine (Guan et al 2018), latent finger print detection (Hai et al 2018), anti-counterfeiting applications (Li and Hu 2019;Xiong et al 2019;Zhang et al 2018) and some other areas of photonics (Eichhorn 2018;Lizundia et al 2020;Xue et al 2018;Zhang et al 2017). Cellulose nanofibrils (CNF), cellulose nanocrystals (CNC) and TEMPO-oxidized CNF (TOCNF) are unique matrices for the synthesis of luminescent nanocomposites because of their large surface areas, high reactivities, good optical properties, mechanical strength and colloid stability (De France et al 2020;Kontturi et al 2018;Thomas et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Laser damage threshold of hydrophobic up-conversion carboxylated nanocellulose/SrF2:Ho composite films functionalized with 3-aminopropyltriethoxysilane

et al. 2021

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Luminescent nanocomposite films, containing SrF 2 :Но up-conversion particles, were prepared by two different protocols from aqueous dispersions of TEMPO-oxidized cellulose nanofibrils (TOCNF) functionalized with 3-aminopropyltriethoxysilane (APS) without the use of organic solvents at pH = 4.0-4.5 and 9.0-9.5, respectively. Proposed synthetic protocols included formation of the films by drying the dispersions containing pre-hydrolyzed APS adsorbed onto TOCNF and SrF 2 :Но particles followed by heating at 105 °C. Hydrophobic (water contact angle 101 ± 2°), strong, and translucent TOCNF/SrF 2 :Но-APS films were prepared by casting from a solution at pH = 4.0-4.5. Scanning electron microscopy, energy-dispersive X-ray spectroscopy with element mapping, Fourier-transform infrared spectroscopy, X-ray diffraction methods confirmed homogeneous distribution of up-conversion particles in TOCNF matrices as well as the grafting of linear polysiloxanes via the condensation of silanol groups and OH-groups on the surface of TOCNF. Differential scanning calorimetry and thermogravimetry data confirmed an increase in thermal stability of the APS modified nanocomposite films obtained at pH = 4.0-4.5.Hydrophobic TOCNF/SrF 2 :Но-APS nanocomposite films exhibited an intense red luminescence in the visible spectrum range ( 5 I 7 level excitation of Ho 3+ ions with 1912 nm laser irradiation) as well as two-times higher laser damage threshold compared to unmodified TOCNF/SrF 2 :Но films. TOCNF/SrF 2 :Но films can be used for visualization 2 μm laser radiation in medicine and long-distance atmosphere monitoring.

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Fluorescent CdTe-QD-encoded nanocellulose microspheres by green spraying method

Cited by 16 publications

References 45 publications

Development of structure-tailored and composite magnetic-fluorescent microspheres through the PRI method

Development of structure-tailored and composite magnetic-fluorescent microspheres through the PRI method

The Fast and One-Step Growth of ZnO Nanorods on Cellulose Nanofibers for Highly Sensitive Photosensors

Laser damage threshold of hydrophobic up-conversion carboxylated nanocellulose/SrF2:Ho composite films functionalized with 3-aminopropyltriethoxysilane

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