1
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Bayer S, Yin Yu JH, Nagl S. Room temperature synthesis of nanocomposite thin films with embedded Cs 2AgIn 0.9Bi 0.1Cl 6 lead-free double perovskite nanocrystals with long-term water stability, wide range pH tolerance, and high quantum yield. NANOSCALE ADVANCES 2024; 6:3347-3354. [PMID: 38933862 PMCID: PMC11197404 DOI: 10.1039/d4na00233d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 05/12/2024] [Indexed: 06/28/2024]
Abstract
The synthesis of Cs2AgIn0.9Bi0.1Cl6 nanocrystals was achieved at room temperature under ambient conditions using the ligand-assisted reprecipitation (LARP) method. The synthesized NCs exhibit bright orange emission when excited at 375 nm and have broad photoluminescence (PL) emission spectra with a maximum of 630 nm. A photoluminescence quantum yield (PLQY) of 36% was observed in these NCs without any polymer coatings. Polystyrene (PS), and poly (methyl methacrylate) (PMMA) were used to enhance the water stability and PLQY values up to 64%. Nanocomposite thin films with these polymer encapsulations exhibit good thermal stability up to at least 353 K and high quantum yields. PMMA-coated NCs showed long-term water stability for at least 4 months. The composites remain photostable when in contact with water for at least 120 min under continuous 365 nm UV illumination at 1 mW cm-2. Due to their excellent optical properties, aqueous stability, and wide range pH tolerance, these nanocomposite thin films could be employed for a variety of biological applications.
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Affiliation(s)
- Steevanson Bayer
- Department of Chemistry, The Hong Kong University of Science and Technology Kowloon Hong Kong SAR China
| | - Jason Ho Yin Yu
- Department of Chemistry, The Hong Kong University of Science and Technology Kowloon Hong Kong SAR China
| | - Stefan Nagl
- Department of Chemistry, The Hong Kong University of Science and Technology Kowloon Hong Kong SAR China
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2
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Sun J, Yan K, Pan A, Zhang P, Chen X, Shi X, Shi C. Shell thickness-induced thermal dependence: highly sensitive core-shell CdSe/ZnS/POSS-based temperature probes. Phys Chem Chem Phys 2024; 26:11498-11505. [PMID: 38563212 DOI: 10.1039/d4cp00099d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Fluorescence nanothermometry based on quantum dots is a current research hotspot for novel non-contact temperature monitoring, and is of vital significance for the modulation and design of the sensing properties of sensors. Herein, a design strategy to modulate the temperature-sensing characteristics of quantum dots based on the thickness of a shell is proposed. In this study, CdSe/ZnS quantum dot/POSS-based temperature probe films with varying fluorescence characteristics were developed, and the influence of the ZnS shell on temperature sensing was examined by varying the thickness of the ZnS shell. The temperature dependency, linearity, range of applications, and reversibility of quantum dot thin film probes were all considerably regulated by the ZnS shell, according to research on quantum dot/POSS-based films coated with various shell thicknesses. The CdSe/ZnS temperature probe with 4 monolayers (MLs) stood out among the rest due to its strong thermal stability (at least 5 cycles), large usable temperature range (20-80 °C), and excellent temperature sensitivity (R2 > 0.994). The results demonstrated that the temperature sensing performance of quantum dots was the consequence of the combined effect of multiple temperature response properties induced by the thickness of the shell, and the shell control of quantum dots to optimize the temperature sensing performance was an essential approach for the design of temperature probes. This work demonstrates the great potential of the shell in tuning the temperature sensing performance of quantum dots and provides a viable approach for the design of quantum dot temperature probes.
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Affiliation(s)
- Jiannan Sun
- Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, 710049, PR China.
| | - Ke Yan
- Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, 710049, PR China.
| | - Aizhao Pan
- Department of Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, PR China.
| | - Pan Zhang
- Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, 710049, PR China.
| | - Xuehang Chen
- Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, 710049, PR China.
| | - Xinyi Shi
- Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, 710049, PR China.
| | - Chengyu Shi
- Department of Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, PR China.
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3
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Kar MR, Kumar S, Acharya TK, Goswami C, Bhaumik S. Highly water-stable, luminescent, and monodisperse polymer-coated CsPbBr 3 nanocrystals for imaging in living cells with better sensitivity. RSC Adv 2023; 13:5946-5956. [PMID: 36816075 PMCID: PMC9936268 DOI: 10.1039/d2ra07019g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Recently, CsPbX3 (X= Cl, Br, I) nanocrystals (NCs) have evolved as a potential contender for various optoelectronic applications due to some of their excellent photophysical properties. Their superior non-linear optical properties enable them to take part in bioimaging applications due to their longer penetration depth and less scattering effect in living cells. However, the poor stability of perovskite NCs in aqueous media still remains a great challenge for practical usage. Comparatively stable silica-coated NCs have a tendency to agglomerate among other NCs and transform into bigger particles. Such big particles clog the inside of narrow channels during the uptake and can't effectively reach the targeted cells. To tackle such issues, we introduce a fast and reproducible synthesis process of CsPbBr3 NCs that are coated with different long-chained organic ligands/polymers and compared their photophysical properties. Among them, polyvinylpyrrolidone (PVP) encapsulated NCs are highly luminescent in the green spectral region and showed a maximum photoluminescence quantum yield (PLQY) of up to 84%. The incorporation of n-isopropyl acrylamide (NIPAM) along with PVP further improves the stability of the PVP-coated NCs against heat and moisture. These NCs exhibit higher water stability compared to silica-coated NCs and maintained their emission properties for about one week in DI water. The smaller particle size, uniform size distribution, higher structural stability, and better dispersivity of polymer-coated NCs in the aqueous media enable them to perform as fluorescent probes for live cell imaging in mammalian Chinese Hamster Ovary (CHO-K1) cells. There is no adverse affect in the cells' viability and morphology even after long incubation periods (∼72 hours). The dosage of Pb-ions contained in the polymer-coated NCs is calculated as below 5 μg mL-1, which is suitable for live cell imaging. This work provides insight for expanding the use of these NCs significantly into bioimaging applications with higher sensitivity.
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Affiliation(s)
- Manav Raj Kar
- Department of Engineering and Materials Physics, Institute of Chemical Technology-IndianOil Odisha Campus Mouza-Samantapuri Bhubaneswar 751013 Odisha India
| | - Shamit Kumar
- School of Biological Sciences, National Institute of Science Education and ResearchBhubaneswar752050OdishaIndia
| | - Tusar Kanta Acharya
- School of Biological Sciences, National Institute of Science Education and ResearchBhubaneswar752050OdishaIndia
| | - Chandan Goswami
- School of Biological Sciences, National Institute of Science Education and ResearchBhubaneswar752050OdishaIndia
| | - Saikat Bhaumik
- Department of Engineering and Materials Physics, Institute of Chemical Technology-IndianOil Odisha Campus Mouza-Samantapuri Bhubaneswar 751013 Odisha India
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4
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Horniichuk OY, Ridier K, Zhang L, Zhang Y, Molnár G, Salmon L, Bousseksou A. High-Sensitivity Microthermometry Method Based on Vacuum-Deposited Thin Films Exhibiting Gradual Spin Crossover above Room Temperature. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52140-52148. [PMID: 36374998 DOI: 10.1021/acsami.2c13834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We report on the fabrication, characterization, and microthermometry application of high-quality, nanometric thin films, with thicknesses in the range 20-200 nm, of the molecular spin-crossover complex [Fe(HB(1,2,3-triazol-1-yl)3)2]. The films were obtained by vacuum thermal evaporation and characterized by X-ray diffraction, UV spectrophotometry, and atomic force microscopy. The as-deposited films are dense and crystalline with a preferred [011] orientation of the monoclinic crystal lattice normal to the substrate surface. The films exhibit a gradual spin conversion centered at ca. 374 K spanning the 273-473 K temperature range, irrespective of their thickness. When deposited on a microelectronic device, these films can be used to enhance the UV-light thermoreflectance coefficient of reflective surfaces by more than an order of magnitude, allowing for high-sensitivity thermoreflectance thermal imaging.
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Affiliation(s)
- Oleksandr Ye Horniichuk
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 12, Lva Tolstogo str., 01033, Kyiv, Ukraine
| | - Karl Ridier
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
| | - Lijun Zhang
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
| | - Yuteng Zhang
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
| | - Gábor Molnár
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
| | - Lionel Salmon
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
| | - Azzedine Bousseksou
- LCC, CNRS and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France
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5
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Huang Y, Lai Z, Jin J, Lin F, Li F, Lin L, Tian D, Wang Y, Xie R, Chen X. Ultrasensitive Temperature Sensing Based on Ligand-Free Alloyed CsPbCl x Br 3-x Perovskite Nanocrystals Confined in Hollow Mesoporous Silica with High Density of Halide Vacancies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103425. [PMID: 34647396 DOI: 10.1002/smll.202103425] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Temperature sensing based on fluorescent semiconductor nanocrystals has recently received immense attention. Enhancing the trap-facilitated thermal quenching of the fluorescence should be an effective approach to achieve high sensitivity for temperature sensing. Compared with conventional semiconductor nanocrystals, the defect-tolerant feature of lead halide perovskite nanocrystals (LHP NCs) endows them with high density of defects. Here, hollow mesoporous silica (h-SiO2 ) template-assisted ligand-free synthesis and halogen manipulation (chloride-importing) are proposed to fabricate highly defective yet fluorescent CsPbCl1.2 Br1.8 NCs confined in h-SiO2 (CsPbCl1.2 Br1.8 NCs@h-SiO2 ) for ultrasensitive temperature sensing. The trap barrier heights, exciton-phonon scattering, and trap state filling process in the CsPbCl1.2 Br1.8 NCs@h-SiO2 and CsPbBr3 NCs@h-SiO2 are studied to illustrate the higher temperature sensitivity of CsPbCl1.2 Br1.8 NCs@h-SiO2 at physiological temperature range. By integrating the thermal-sensitive CsPbCl1.2 Br1.8 NCs@h-SiO2 and thermal-insensitive K2 SiF6 :Mn4+ phosphor into the flexible ethylene-vinyl acetate polymer matrix, ratiometric temperature sensing from 30.0 °C to 45.0 °C is demonstrated with a relative temperature sensitivity up to 13.44% °C-1 at 37.0 °C. The composite film shows high potential as a thermometer for monitoring the body temperature. This work demonstrates the unparalleled temperature sensing performance of LHP NCs and provides new inspiration on switching the defects into advantages in sensing applications.
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Affiliation(s)
- Yipeng Huang
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Zhiwei Lai
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Jingwen Jin
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Fangyuan Lin
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Feiming Li
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, China
| | - Longhui Lin
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Dongjie Tian
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yiru Wang
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Rongjun Xie
- College of Materials, Xiamen University, Xiamen, 361005, China
| | - Xi Chen
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China
- Shenzhen Research Institute of Xiamen University, Shenzhen, 518000, China
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6
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Trifiletti V, Asker C, Tseberlidis G, Riva S, Zhao K, Tang W, Binetti S, Fenwick O. Quasi-Zero Dimensional Halide Perovskite Derivates: Synthesis, Status, and Opportunity. FRONTIERS IN ELECTRONICS 2021. [DOI: 10.3389/felec.2021.758603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In recent decades, many technological advances have been enabled by nanoscale phenomena, giving rise to the field of nanotechnology. In particular, unique optical and electronic phenomena occur on length scales less than 10 nanometres, which enable novel applications. Halide perovskites have been the focus of intense research on their optoelectronic properties and have demonstrated impressive performance in photovoltaic devices and later in other optoelectronic technologies, such as lasers and light-emitting diodes. The most studied crystalline form is the three-dimensional one, but, recently, the exploration of the low-dimensional derivatives has enabled new sub-classes of halide perovskite materials to emerge with distinct properties. In these materials, low-dimensional metal halide structures responsible for the electronic properties are separated and partially insulated from one another by the (typically organic) cations. Confinement occurs on a crystal lattice level, enabling bulk or thin-film materials that retain a degree of low-dimensional character. In particular, quasi-zero dimensional perovskite derivatives are proving to have distinct electronic, absorption, and photoluminescence properties. They are being explored for various technologies beyond photovoltaics (e.g. thermoelectrics, lasing, photodetectors, memristors, capacitors, LEDs). This review brings together the recent literature on these zero-dimensional materials in an interdisciplinary way that can spur applications for these compounds. The synthesis methods, the electrical, optical, and chemical properties, the advances in applications, and the challenges that need to be overcome as candidates for future electronic devices have been covered.
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7
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Imran M, Mai BT, Goldoni L, Cirignano M, Jalali HB, Di Stasio F, Pellegrino T, Manna L. Switchable Anion Exchange in Polymer-Encapsulated APbX 3 Nanocrystals Delivers Stable All-Perovskite White Emitters. ACS ENERGY LETTERS 2021; 6:2844-2853. [PMID: 34423129 PMCID: PMC8369489 DOI: 10.1021/acsenergylett.1c01232] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/06/2021] [Indexed: 05/05/2023]
Abstract
We report a one-step synthesis of halide perovskite nanocrystals embedded in amphiphilic polymer (poly(acrylic acid)-block-poly(styrene), PAA-b-PS) micelles, based on injecting a dimethylformamide solution of PAA-b-PS, PbBr2, ABr (A = Cs, formamidinium, or both) and "additive" molecules in toluene. These bifunctional or trifunctional short chain organic molecules improve the nanocrystal-polymer compatibility, increasing the nanocrystal stability against polar solvents and high flux irradiation (the nanocrystals retain almost 80% of their photoluminescence after 1 h of 3.2 w/cm2 irradiation). If the nanocrystals are suspended in toluene, the coil state of the polymer allows the nanocrystals to undergo halide exchange, enabling emission color tunability. If the nanocrystals are suspended in methanol, or dried as powders, the polymer is in the globule state, and they are inert to halide exchange. By mixing three primary colors we could prepare stable, multicolor emissive samples (for example, white emitting powders) and a UV-to-white color converting layer for light-emitting diodes entirely made of perovskite nanocrystals.
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Affiliation(s)
- Muhammad Imran
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Binh T. Mai
- Nanomaterials
for Biomedical Applications, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Luca Goldoni
- Analytical
Chemistry Lab, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Matilde Cirignano
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Universitàdegli
Studi di Genova, Via
Dodecaneso 31, 16146 Genova, Italy
| | - Houman Bahmani Jalali
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Francesco Di Stasio
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Teresa Pellegrino
- Nanomaterials
for Biomedical Applications, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Liberato Manna
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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8
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Gao W, Ge W, Shi J, Chen X, Li Y. A novel upconversion optical thermometers derived from non-thermal coupling levels of CaZnOS:Tm/Yb phosphors. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Neplokh V, Markina DI, Baeva M, Pavlov AM, Kirilenko DA, Mukhin IS, Pushkarev AP, Makarov SV, Serdobintsev AA. Recrystallization of CsPbBr 3 Nanoparticles in Fluoropolymer Nonwoven Mats for Down- and Up-Conversion of Light. NANOMATERIALS 2021; 11:nano11020412. [PMID: 33562740 PMCID: PMC7915552 DOI: 10.3390/nano11020412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 01/29/2021] [Accepted: 02/03/2021] [Indexed: 11/30/2022]
Abstract
Inorganic halides perovskite CsPbX3 (X = Cl, Br, and I or mixed halide systems Cl/Br and Br/I) nanoparticles are efficient light-conversion objects that have attracted significant attention due to their broadband tunability over the entire visible spectral range of 410–700 nm and high quantum yield of up to 95%. Here, we demonstrate a new method of recrystallization of CsPbBr3 nanoparticles inside the electrospun fluoropolymer fibers. We have synthesized nonwoven tetrafluoroethylene mats embedding CsPbBr3 nanoparticles using inexpensive commercial precursors and syringe electrospinning equipment. The fabricated nonwoven mat samples demonstrated both down-conversion of UV light to 506 nm and up-conversion of IR femtosecond laser radiation to 513 nm green photoluminescence characterized by narrow emission line-widths of 35 nm. Nanoparticle formation inside nonwoven fibers was confirmed by TEM imaging and water stability tests controlled by fluorimetry measurements. The combination of enhanced optical properties of CsPbBr3 nanoparticles and mechanical stability and environmental robustness of highly deformable nonwoven fluoropolymer mats is appealing for flexible optoelectronic applications, while the industry-friendly fabrication method is attractive for commercial implementations.
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Affiliation(s)
- Vladimir Neplokh
- Department of Physics, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia;
- Institute of Machine Engineering, Materials and Transport, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
- Correspondence: ; Tel.: +7-905-255-3999
| | - Daria I. Markina
- Department of Physics and Engineering, ITMO University, Lomonosova 9, 197101 St. Petersburg, Russia; (D.I.M.); (M.B.); (A.P.P.); (S.V.M.)
| | - Maria Baeva
- Department of Physics and Engineering, ITMO University, Lomonosova 9, 197101 St. Petersburg, Russia; (D.I.M.); (M.B.); (A.P.P.); (S.V.M.)
- Institute of Automation and Control Processes (IACP), Far Eastern Branch of Russian Academy of Sciences, Ulitsa Radio 5, 690041 Vladivostok, Russia
| | - Anton M. Pavlov
- Education and Research Institute of Nanostructures and Biosystems, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia; (A.M.P.); (A.A.S.)
| | | | - Ivan S. Mukhin
- Department of Physics, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia;
- Department of Physics and Engineering, ITMO University, Lomonosova 9, 197101 St. Petersburg, Russia; (D.I.M.); (M.B.); (A.P.P.); (S.V.M.)
| | - Anatoly P. Pushkarev
- Department of Physics and Engineering, ITMO University, Lomonosova 9, 197101 St. Petersburg, Russia; (D.I.M.); (M.B.); (A.P.P.); (S.V.M.)
| | - Sergey V. Makarov
- Department of Physics and Engineering, ITMO University, Lomonosova 9, 197101 St. Petersburg, Russia; (D.I.M.); (M.B.); (A.P.P.); (S.V.M.)
| | - Alexey A. Serdobintsev
- Education and Research Institute of Nanostructures and Biosystems, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia; (A.M.P.); (A.A.S.)
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10
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Zhou P, He J, Huang L, Yu Z, Su Z, Shi X, Zhou J. Microfluidic High-Throughput Platforms for Discovery of Novel Materials. NANOMATERIALS 2020; 10:nano10122514. [PMID: 33333718 PMCID: PMC7765132 DOI: 10.3390/nano10122514] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/28/2020] [Accepted: 12/02/2020] [Indexed: 12/12/2022]
Abstract
High-throughput screening is a potent technique to accelerate the discovery and development of new materials. By performing massive synthesis and characterization processes in parallel, it can rapidly discover materials with desired components, structures and functions. Among the various approaches for high-throughput screening, microfluidic platforms have attracted increasing attention. Compared with many current strategies that are generally based on robotic dispensers and automatic microplates, microfluidic platforms can significantly increase the throughput and reduce the consumption of reagents by several orders of magnitude. In this review, we first introduce current advances of the two types of microfluidic high-throughput platforms based on microarrays and microdroplets, respectively. Then the utilization of these platforms for screening different types of materials, including inorganic metals, metal alloys and organic polymers are described in detail. Finally, the challenges and opportunities in this promising field are critically discussed.
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Affiliation(s)
- Peipei Zhou
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, China; (P.Z.); (J.H.); (Z.Y.); (Z.S.)
- School of Mechatronic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, China
| | - Jinxu He
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, China; (P.Z.); (J.H.); (Z.Y.); (Z.S.)
| | - Lu Huang
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, China; (P.Z.); (J.H.); (Z.Y.); (Z.S.)
- Correspondence: (L.H.); (J.Z.); Tel./Fax: +86-20-3938-7890 (J.Z.)
| | - Ziming Yu
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, China; (P.Z.); (J.H.); (Z.Y.); (Z.S.)
| | - Zhenning Su
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, China; (P.Z.); (J.H.); (Z.Y.); (Z.S.)
| | - Xuetao Shi
- National Engineering Research Centre for Tissue Restoration and Reconstruction, School of Material Science and Engineering, South China University of Technology, Guangzhou 510640, China;
| | - Jianhua Zhou
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, China; (P.Z.); (J.H.); (Z.Y.); (Z.S.)
- Correspondence: (L.H.); (J.Z.); Tel./Fax: +86-20-3938-7890 (J.Z.)
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11
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Lin X, Nagl S. A microfluidic chip for rapid analysis of DNA melting curves for BRCA2 mutation screening. LAB ON A CHIP 2020; 20:3824-3831. [PMID: 32926049 DOI: 10.1039/d0lc00624f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A microfluidic chip integrated with a microheater and a luminescent temperature sensor for rapid, spatial melting curve analysis was developed and applied for the screening of a breast cancer gene fragment. The method could detect genetic differences in around 3 minutes total for the whole procedure, which is much faster than established procedures. A microfabrication technique was developed to allow for bonding of a temperature sensing thin film and a Pt microheater with PDMS and the chips could be employed to generate and measure thermal gradients and the fluorescence intensity of stained DNA through multispectral optical imaging. The sensing layer consisting of poly(styrene-co-acrylonitrile) and a tris(1,10-phenanthroline)ruthenium(ii) temperature probe was generated by blade coating on a glass substrate with an attached Pt microheater. Calibration of the temperature between 20 and 90 °C yielded an overall resolution of around 0.13 K. The chip was employed for the screening of the BRCA 2 breast cancer gene; BRCA2 exon 5 was differentiated by its mutant rs80359463 by a 1.1 K difference in melting temperature and two fragments of BRCA2 exon 11 were differentiated by their mutants rs276174826 and rs876660311 by 0.7 K and 2.0 K, respectively. The standard deviations were between 0.1 and 0.5 K. Capable of detecting fluorescence in the DNA and temperature simultaneously and being imaged in a customized assembly, this microchip can be used to screen for mutations in a variety of DNA samples in disease diagnosis and prognosis.
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Affiliation(s)
- Xuyan Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.
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Wang H, Zhang X, Sui N, Hu Y, Colvin VL, Bai X, Zhang Y, Rogach AL, Yu WW. Emission Quenching and Recovery of Illuminated Perovskite Quantum Dots Due to Iodide Ion Migration. J Phys Chem Lett 2020; 11:6168-6175. [PMID: 32659092 DOI: 10.1021/acs.jpclett.0c01844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
All-inorganic lead halide perovskite quantum dots (PQDs) are well-known to easily lose their luminescence emission under light illumination, which is often attributed to a photoinduced degradation mechanism. Here, we demonstrate that such quenched emission of PQDs can completely recover in the dark at room temperature, which occurs through a spontaneous "self-healing" mechanism. Our findings indicate that the loss of emission under light illumination is not due to the generally accepted photoinduced degradation, as otherwise the complete recovery would not be possible. Instead, we attribute the emission loss and its subsequent recovery to the migration of iodide ions on the PQD surface. Under illumination, the iodide ions migrate out and associate to adjacent lead ions on the PQD surface, leading to halide vacancies, lattice distortions, and fluorescence quenching. During the recovery process, the migrated iodide ions spontaneously migrate back and fill halide vacancies, resulting in fluorescence recovery. The results of this study offer a useful solution on how to improve the emission and photostability of PQDs.
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Affiliation(s)
- Hua Wang
- College of Material Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xiangtong Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
- Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States
| | - Ning Sui
- College of Material Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yue Hu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Vicki L Colvin
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Xue Bai
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Andrey L Rogach
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon, Hong Kong SAR ,China
| | - William W Yu
- College of Material Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States
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