scholarly journals Light Down-Converter Based on Luminescent Nanofibers from the Blending of Conjugated Rod-Coil Block Copolymers and Perovskite through Electrospinning

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 84 ◽  
Author(s):  
Dai-Hua Jiang ◽  
Saburo Kobayashi ◽  
Chih-Chun Jao ◽  
Yoshinobu Mato ◽  
Takuya Isono ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Butyl Acrylate ◽  
Click Reaction ◽  
Soft Segment ◽  
Composite Fibers ◽  
Color Tunable ◽  
Perovskite Quantum Dots ◽  
Novel Strategy

We demonstrated a novel strategy for the preparation of light down-converter by combining rod-coil block copolymers with perovskite quantum dots (QDs) through electrospinning. Reports have shown that polymer deformability can be enhanced by incorporating a soft segment and controlled by varying the rod/coil ratio. Therefore, we first synthesized the rod-coil block copolymer through the click reaction of polyfluorene (PF) and poly(n-butyl acrylate) (PBA). Next, the CsPbBr3@PF8k-b-PBA12k composite fibers were fabricated by blending perovskite through electrospinning. Optical spectral evidence demonstrated the success of the strategy, as light down-converters were prepared through the controlled variance of QD/polymer ratios to achieve tunable color and stretchability. This result reveals the potential of using rod-coil block copolymers to fabricate color-tunable perovskite light down-converters.

Lewis Adduct Approach for Self-Assembled Block Copolymer Perovskite Quantum Dots Composite toward Optoelectronic Application: Challenges and Prospects

2021 ◽  
pp. 133701
Author(s):  
Jean-Sebastien Benas ◽  
Fang-Cheng Liang ◽  
Wei-Cheng Chen ◽  
Chung-Wei Hung ◽  
Jung-Yao Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Block Copolymer ◽  
Optoelectronic Application ◽  
Perovskite Quantum Dots ◽  
Self Assembled ◽  
Lewis Adduct

scholarly journals Hybrid fluorescent liquid crystalline composites: directed assembly of quantum dots in liquid crystalline block copolymer matrices

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15264-15273
Author(s):  
Miron Bugakov ◽  
Sharifa Abdullaeva ◽  
Pavel Samokhvalov ◽  
Sergey Abramchuk ◽  
Valery Shibaev ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spatial Distribution ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Hybrid Composite ◽  
Liquid Crystalline ◽  
Composite Films ◽  
Directed Assembly ◽  
Molecular Architecture ◽  
Copolymer Matrices

Spatial distribution of QDs within hybrid composite films was programed by varying the molecular architecture of the host LC block copolymers.

Novel perovskite quantum dots and hydroxyapatite nanocomposites: Enhanced thermal stability, improved emission intensity, and color-tunable luminescence

2020 ◽  
pp. 157989
Author(s):  
Yaxian Lu ◽  
Guang Jia ◽  
Guojing Wang ◽  
Jianru Wang ◽  
Xiao Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Emission Intensity ◽  
Color Tunable ◽  
Perovskite Quantum Dots

Carboxyl-functionalized nanochannels based on block copolymer hierarchical structures

2018 ◽  
Vol 209 ◽  
pp. 303-314 ◽  
Author(s):  
Valentina-Elena Musteata ◽  
Stefan Chisca ◽  
Florian Meneau ◽  
Detlef-M. Smilgies ◽  
Suzana P. Nunes
Keyword(s):  
Phase Separation ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Growth Mechanism ◽  
Butyl Acrylate ◽  
Hierarchical Structures ◽  
Nucleation And Growth ◽  
Porous Structures ◽  
Hexagonally Ordered ◽  
Nucleation And Growth Mechanism

Hierarchical isotropic porous structures with spherical micrometer-sized cavities, interconnected by hexagonally ordered nanochannels, were prepared based on the phase separation of polystyrene-b-poly(t-butyl acrylate) block copolymers, following a nucleation and growth mechanism.

Multisegmented Block Copolymers by 'Click' Coupling of Polymers Prepared by ATRP

2007 ◽  
Vol 60 (6) ◽  
pp. 400 ◽  
Author(s):  
Patricia L. Golas ◽  
Nicolay V. Tsarevsky ◽  
Brent S. Sumerlin ◽  
Lynn M. Walker ◽  
Krzysztof Matyjaszewski
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Butyl Acrylate ◽  
Click Reaction ◽  
Size Exclusion ◽  
Scanning Calorimetry ◽  
Poly Methyl Methacrylate ◽  
Propargyl Ether ◽  
Click Coupling

Multisegmented block copolymers were prepared by the step-growth click coupling of well-defined block copolymers synthesized by atom transfer radical polymerization (ATRP). α,ω-Diazido-terminated polystyrene-block-poly(ethylene oxide)-block-polystyrene was coupled with propargyl ether in N,N-dimethylformamide in the presence of a CuBr/N,N,N´,N´´,N´´-pentamethyldiethylenetriamine catalyst. The preparation of multisegmented block copolymers was also demonstrated by the click coupling of propargyl ether with another diazido-terminated triblock copolymer, poly(n-butyl acrylate)-block-poly(methyl methacrylate)-block-poly(n-butyl acrylate), and a diazido-terminated pentablock copolymer, polystyrene-block-poly(n-butyl acrylate)-block-poly(methyl methacrylate)-block-poly(n-butyl acrylate)-block-polystyrene. The formation of a product of higher molecular weight and broader molecular weight distribution was verified by triple-detection size exclusion chromatography, which revealed that typically five to seven block copolymers were linked together during the click reaction. Differential scanning calorimetry and dynamic mechanical analysis revealed that the amphiphilic block copolymer behaves as a viscoelastic fluid, while its corresponding multiblock copolymer is an elastic material. The multisegmented block copolymers with partially miscible segments exhibit higher glass transition temperatures than their precursors.

Embellishment of Upconversion Nanoparticles with Ultrasmall Perovskite Quantum Dots for Full‐Color Tunable, Dual‐Modal Luminescence Anticounterfeiting

2021 ◽  
pp. 2100814
Author(s):  
Kaimin Du ◽  
Manli Zhang ◽  
Yao Li ◽  
Huwei Li ◽  
Kai Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Upconversion Nanoparticles ◽  
Full Color ◽  
Color Tunable ◽  
Perovskite Quantum Dots

A detour strategy for colloidally stable block-copolymer grafted MAPbBr3 quantum dots in water with long photoluminescence lifetime

Nanoscale ◽  
2018 ◽  
Vol 10 (13) ◽  
pp. 5820-5826 ◽  
Author(s):  
Shuang Yang ◽  
Feng Zhang ◽  
Jia Tai ◽  
Yang Li ◽  
Yang Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Block Copolymer ◽  
Ph Stability ◽  
General Strategy ◽  
Photoluminescence Lifetime ◽  
Perovskite Quantum Dots

We report a facile and general strategy for the preparation of aqueous colloidally stable block-copolymer grafted perovskite quantum dots with remarkable long-term thermo-, photo-, and pH-stability.

Ultralow-Threshold and Color-Tunable Continuous-Wave Lasing at Room-Temperature from In Situ Fabricated Perovskite Quantum Dots

2019 ◽  
Vol 10 (12) ◽  
pp. 3248-3253 ◽  
Author(s):  
Lei Wang ◽  
Linghai Meng ◽  
Lan Chen ◽  
Sheng Huang ◽  
Xiangang Wu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Continuous Wave ◽  
Color Tunable ◽  
Perovskite Quantum Dots
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