Facile synthesis of highly fluorescent gelatin/Si nanocrystals composite thin films for optical detection of amines in water

Shi, Li; Yu, Ting; Sun, Luwei; Huang, Hubiao; Pi, Xiaodong; Peng, Xinsheng

doi:10.1039/c3tc32321h

Cited by 5 publications

(1 citation statement)

References 31 publications

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“…In research laboratories, promising colloid-based functional devices such as bio, chemical, gas, temperature or strain sensors [1][2][3][4][5][6], high-security identification tags [7], nanogenerators [8] or high density data storage media [9] have emerged. The benefits of using colloidal nano-objects as functional units are multiple.…”

Section: Introductionmentioning

confidence: 99%

High-throughput fabrication of anti-counterfeiting colloid-based photoluminescent microtags using electrical nanoimprint lithography

et al. 2014

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This work demonstrates the excellent capability of the recently developed electrical nanoimprint lithography (e-NIL) technique for quick, high-throughput production of well-defined colloid assemblies on surfaces. This is shown by fabricating micron-sized photoluminescent quick response (QR) codes based on the electrostatic directed trapping (so called nanoxerography process) of 28 nm colloidal lanthanide-doped upconverting NaYF4 nanocrystals. Influencing experimental parameters have been optimized and the contribution of triboelectrification in e-NIL was evidenced. Under the chosen conditions, more than 300 000 nanocrystal-based QR codes were fabricated on a 4 inch silicon wafer, in less than 15 min. These microtags were then transferred to transparent flexible films, to be easily integrated onto desired products. Invisible to the naked eye, they can be decoded and authenticated using an optical microscopy image of their specific photoluminescence mapping. Beyond this very promising application for product tracking and the anti-counterfeiting strategies, e-NIL nanoxerography, potentially applicable to any types of charged and/or polarizable colloids and pattern geometries opens up tremendous opportunities for industrial scale production of various other kinds of colloid-based devices and sensors.

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Section: Introductionmentioning

confidence: 99%

High-throughput fabrication of anti-counterfeiting colloid-based photoluminescent microtags using electrical nanoimprint lithography

et al. 2014

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Luminescent mechanism analyzing and metal-ion sensing of Eu(III)-organic ligands complex doped gelatin-based films and hydrogels

Zhou

Zhang

et al. 2023

Materials Science and Engineering: B

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Luminescent films for chemo- and biosensing

et al. 2015

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Luminescent films have received great interest for chemo-/bio-sensing applications due to their distinct advantages over solution-based probes, such as good stability and portability, tunable shape and size, non-invasion, real-time detection, extensive suitability in gas/vapor sensing, and recycling. On the other hand, they can achieve selective and sensitive detection of chemical/biological species using special luminophores with a recognition moiety or the assembly of common luminophores and functional materials. Nowadays, the extensively used assembly techniques include drop-casting/spin-coating, Langmuir-Blodgett (LB), self-assembled monolayers (SAMs), layer-by-layer (LBL), and electrospinning. Therefore, this review summarizes the recent advances in luminescent films with these assembly techniques and their applications in chemo-/bio-sensing. We mainly focused on the discussion of the relationship between the sensing properties of the films and their architecture. Furthermore, we discussed some critical challenges existing in this field and possible solutions that have been or are being developed to overcome these challenges.

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Facile synthesis of highly fluorescent gelatin/Si nanocrystals composite thin films for optical detection of amines in water

Cited by 5 publications

References 31 publications

High-throughput fabrication of anti-counterfeiting colloid-based photoluminescent microtags using electrical nanoimprint lithography

High-throughput fabrication of anti-counterfeiting colloid-based photoluminescent microtags using electrical nanoimprint lithography

Luminescent mechanism analyzing and metal-ion sensing of Eu(III)-organic ligands complex doped gelatin-based films and hydrogels

Luminescent films for chemo- and biosensing

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