Magneto‐Fluorescent Perovskite Nanocomposites for Directed Cell Motion and Imaging

Tan, Max J. H.; Ravichandran, Divyapoorani; Ang, Hui Li; Ong, Evon Woan Yuann; Lim, Cheryldine Qiu Xuan; Kam, Gabriel M. Q.; Kumar, Alan Prem; Tan, Zhi‐Kuang

doi:10.1002/adhm.201900859

Cited by 33 publications

(36 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 311 ] This method can also be applied to co‐encapsulate LHP NCs with magnetite nanoparticles, enabling optically and magnetically dual‐responsive composites with applications in multi‐modal biological imaging. [ 310,311,316 ]…”

Section: Postsynthetic Ligand Modifications In Lhp Ncsmentioning

confidence: 99%

Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals

et al. 2021

View full text Add to dashboard Cite

Lead halide perovskite (LHP) nanocrystals (NCs) have recently garnered enhanced development efforts from research disciplines owing to their superior optical and optoelectronic properties. These materials, however, are unlike conventional quantum dots, because they possess strong ionic character, labile ligand coverage, and overall stability issues. As a result, the system as a whole is highly dynamic and can be affected by slight changes of particle surface environment. Specifically, the surface ligand shell of LHP NCs has proven to play imperative roles throughout the lifetime of a LHP NC. Recent advances in engineering and understanding the roles of surface ligand shells from initial synthesis, through postsynthetic processing and device integration, finally to application performances of colloidal LHP NCs are covered here.

show abstract

Section: Postsynthetic Ligand Modifications In Lhp Ncsmentioning

confidence: 99%

Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Poly(lauryl methacrylate) PLMA CsPbBr 3 86% [59] [ 29,59] Poly(butyl methacrylate) PBMA CsPbBr 3 N/A [24a] Poly(vinylpyrrolidone) PVP FAPbBr 3 N/A [58a] CsPbX 3 55% [60] 24% [61] [58a, [60][61][62] Poly(lactic acid) PLA CsPbX 3 90% [63] [63]…”

Section: In Situ Synthesis Of Pncs In the Presence Of Polymerizable Capping Agentsmentioning

confidence: 99%

“…Hydrophilic polymers, such as PEG and PVP, have also been utilized to cap PNCs to enhance water resistance, water solubility, and biocompatibility, yielding PNC/polymer nanocomposites that can be used as luminescent probes in cell imaging. [46,62] Tethering PNCs with amphiphilic block copolymers has been found to further enhance the compatibility of PNCs in aqueous media and lower the cytotoxicity of nanocomposites, while retaining the structural integrity and high PL stability of PNCs. For example, 90% of human cervical epithelial carcinoma cells were observed to survive in concentrations of PS-b-PEO capped CsPbX 3 PNCs below 30 µg mL −1 .…”

Section: Bioimaging and Biosensorsmentioning

confidence: 99%

Recent Advances in Synthesis, Properties, and Applications of Metal Halide Perovskite Nanocrystals/Polymer Nanocomposites

et al. 2021

View full text Add to dashboard Cite

a 3D framework. The A-site cations occupy the cavity within the framework. Metal halide perovskites have a relatively soft lattice and a dynamically disordered crystal structure which results in tunable charge-carrier recombination rates and other nonclassical semiconductor characteristics. [1] Metal halide perovskites have been extensively studied for solar energy conversion over the past decade due to their intriguing optoelectronic properties, including near-perfect crystalline structures, [2] tunable direct bandgaps, [3] large absorption coefficient (1.5 × 10 4 cm −1 at 550 nm), [4] high ambipolar mobility (≈20 cm 2 V −1 s −1 ), [5] long carrier diffusion lengths (100-1000 nm; ≈175 µm in MAPbI 3 single crystals) (L eff,e /L eff,h < 1), [6] small exciton binding energy (≈30 meV), [7] high defect tolerance, [8] solution processability, and low processing cost. [9] Notably, the certified power conversion efficiency (PCE) of single-junction perovskite solar cells has rapidly increased from 3.8% in 2009 to 25.2% in 2019. [10] It is also notable that charge carriers within metal halide perovskites can undergo radiative recombination to emit light, making them promising candidates as next-generation light sources for light-emitting diodes (LEDs) [11] and lasers. [12] Bulk perovskite, however, exhibits limited photoluminescence quantum yield (PLQY) due to the presence of mobile ionic defects and small exciton binding energy. [13] In contrast, perovskite nanocrystals (PNCs) possess strong quantum confinement and display improved optoelectronic properties from their bulk counterparts. [14] Notably, metal halide PNCs possess high luminescence, narrow full width at half maximum, and a composition-and size-dependent bandgap. [15] The photoluminescence (PL) of metal halide PNCs can be readily tuned from ultraviolet (UV) to near-infrared wavelengths by simply tailoring their composition or altering their size relative to their Bohr diameters.Hot-injection and ligand-assisted reprecipitation methods represent the two most-developed colloidal synthesis approaches of metal halide PNCs. [13,16] The use of organic capping ligands in synthesis enables nanoscale growth of metal halide perovskite crystals and actively passivates their surface defects, in a manner similar to that of conventional NC Metal halide perovskite nanocrystals (PNCs) have recently garnered tremendous research interest due to their unique optoelectronic properties and promising applications in photovoltaics and optoelectronics. Metal halide PNCs can be combined with polymers to create nanocomposites that carry an array of advantageous characteristics. The polymer matrix can bestow stability, stretchability, and solution-processability while the PNCs maintain their size-, shape-and composition-dependent optoelectronic properties. As such, these nanocomposites possess great promise for next-generation displays, lighting, sensing, biomedical technologies, and energy conversion. The recent advances in metal halide PNC/polymer nanocomposites are summarized here. F...

show abstract

“…In vitro cytotoxicity test and cell fluorescence imaging have been conducted to determine the feasibility of MHP nanocomposite particles in this biomedical application. A confocal microscope can clearly capture the transfusion of polymer‐encapsulated PNPs into a tumour cell, such as HeLa, [ 33 ] MCF‐7, [ 154 ] HepG2, [ 36 ] A549, [ 67 ] and CT26 cells. [ 3 ] Figure a shows the bright‐field and fluorescence images of a live cell incubated with polymer‐encapsulated PNPs.…”

Section: Detecting and Sensing Mhp Devices For Biomedical Therapymentioning

confidence: 99%

Emerging New‐Generation Detecting and Sensing of Metal Halide Perovskites

et al. 2022

Adv Elect Materials

View full text Add to dashboard Cite

The unique energy conversion characteristics of metal halide perovskite (MHP) materials, which can be hardly observed in conventional semiconductors and metal oxides, have boosted their promising application in detecting and sensing devices, in addition to their famous optoelectronic functions. Herein, the recent progresses of the state‐of‐the‐art applications of MHPs are focused on X‐ray diagnosis, cardiac detection, bionic retina, artificial synapse, cell imaging, and others. Owing to their emerging electrical properties with multifield coupled response effect, and photoelectric, electro‐optical, and all‐optical conversion functions, MHPs demonstrate promising prospects in the diagnosis and treatment of various diseases. As functional optoelectronic materials, MHPs provide a new platform for future biomedical devices. This review article is expected to present the current status on, and further promote the application of MHP materials in detecting and sensing devices.

show abstract

Magneto‐Fluorescent Perovskite Nanocomposites for Directed Cell Motion and Imaging

Cited by 33 publications

References 37 publications

Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals

Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals

Recent Advances in Synthesis, Properties, and Applications of Metal Halide Perovskite Nanocrystals/Polymer Nanocomposites

Emerging New‐Generation Detecting and Sensing of Metal Halide Perovskites

Contact Info

Product

Resources

About