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.

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.

scholarly journals Long-term ambient air-stable cubic CsPbBr3 perovskite quantum dots using molecular bromine

2019 ◽  
Vol 1 (9) ◽  
pp. 3388-3391 ◽  
Author(s):  
Surakcha Thapa ◽  
Karishma Bhardwaj ◽  
Siddhant Basel ◽  
Sajan Pradhan ◽  
Charlotte J. Eling ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Decisive Role ◽  
Ambient Air ◽  
Molecular Bromine ◽  
Perovskite Nanocrystals ◽  
Perovskite Quantum Dots

Temperature and precursor-controlled in situ generated, oleylammonium halide species from molecular bromine and amine plays decisive role in the synthesis of long-term ambient stable and emission tunable CsPbBr3 perovskite nanocrystals.

scholarly journals Enhanced performance of ZnO nanoparticle decorated all-inorganic CsPbBr3 quantum dot photodetectors

2019 ◽  
Vol 7 (11) ◽  
pp. 6134-6142 ◽  
Author(s):  
Kai Shen ◽  
Xiao Li ◽  
Hao Xu ◽  
Mingqing Wang ◽  
Xiao Dai ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Zno Nanoparticle ◽  
Inorganic Perovskite ◽  
Term Stability ◽  
Long Term Stability ◽  
Perovskite Quantum Dots

ZnO nanoparticle decorated all-inorganic perovskite quantum dots exhibit improved photoresponse and long-term stability.

Biocompatible perovskite quantum dots with superior water-resistance enable long-term monitoring of H2S level in vivo

Nanoscale ◽  
2021 ◽  
Author(s):  
Fang Luo ◽  
Shiqing Li ◽  
Limei Cui ◽  
Yexin Zu ◽  
Yiting Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Optical Materials ◽  
Water Resistance ◽  
Humid Environment ◽  
Perovskite Quantum Dots ◽  
Long Term Monitoring ◽  
Term Monitoring

Perovskite quantum dots (PQDs) have emerged to be promising optical materials because of their exceptional optical properties. Nevertheless, owing to the instability in the humid environment, their bio-related applications, such...

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