Polymer ligands induced remarkable spectral shifts in all-inorganic lead halide perovskite nanocrystals

2020 ◽  
Vol 8 (29) ◽  
pp. 9968-9974
Author(s):  
Hui Xiao ◽  
Yi Wei ◽  
Peipei Dang ◽  
Shuang Liang ◽  
Ziyong Cheng ◽  
...  

The polymer ligand P–A simultaneously shears and passivates the surface of perovskite nanocrystals to obtain adjustable light emission.

Author(s):  
Oliviero Cannelli ◽  
Nicola Colonna ◽  
Michele Puppin ◽  
Thomas C. Rossi ◽  
Dominik Kinschel ◽  
...  

2021 ◽  
Author(s):  
Syed Akhil ◽  
V.G.Vasavi Dutt ◽  
Nimai Mishra

In recent years inorganic lead halide perovskite nanocrystals (PNCs) have been used in photocatalytic reactions. The surface chemistry of the PNCs can play an important role in the excited state...


2019 ◽  
Vol 56 (10) ◽  
pp. 101602
Author(s):  
胡佳佩 Hu Jiapei ◽  
吴超 Wu Chao ◽  
翁俊旗 Weng Junqi ◽  
王一卉 Wang Yihui ◽  
贺香红 He Xianghong

Nano Research ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1962-1969 ◽  
Author(s):  
Andrés Granados del Águila ◽  
T. Thu Ha Do ◽  
Jun Xing ◽  
Wen Jie Jee ◽  
Jacob B. Khurgin ◽  
...  

2019 ◽  
Vol 123 (32) ◽  
pp. 19844-19850 ◽  
Author(s):  
Huafeng Shi ◽  
Xiaoli Zhang ◽  
Xiaowei Sun ◽  
Rui Chen ◽  
Xinhai Zhang

2020 ◽  
Vol 2 (4) ◽  
pp. 367-375 ◽  
Author(s):  
Ju-Ping Ma ◽  
Jia-Kai Chen ◽  
Jun Yin ◽  
Bin-Bin Zhang ◽  
Qing Zhao ◽  
...  

2021 ◽  
Vol 9 ◽  
Author(s):  
Lili Xie ◽  
Jie Zan ◽  
Zhijian Yang ◽  
Qinxia Wu ◽  
Xiaofeng Chen ◽  
...  

Detection of haloalkanes is of great industrial and scientific importance because some haloalkanes are found serious biological and atmospheric issues. The development of a flexible, wearable sensing device for haloalkane assays is highly desired. Here, we develop a paper-based microfluidic sensor to achieve low-cost, high-throughput, and convenient detection of haloalkanes using perovskite nanocrystals as a nanoprobe through anion exchanging. We demonstrate that the CsPbX3 (X = Cl, Br, or I) nanocrystals are selectively and sensitively in response to haloalkanes (CH2Cl2, CH2Br2), and their concentrations can be determined as a function of photoluminescence spectral shifts of perovskite nanocrystals. In particular, an addition of nucleophilic trialkyl phosphines (TOP) or a UV-photon-induced electron transfer from CsPbX3 nanocrystals is responsible for achieving fast sensing of haloalkanes. We further fabricate a paper-based multichannel microfluidic sensor to implement fast colorimetric assays of CH2Cl2 and CH2Br2. We also demonstrate a direct experimental observation on chemical kinetics of anion exchanging in lead-halide perovskite nanocrystals using a slow solvent diffusion strategy. Our studies may offer an opportunity to develop flexible, wearable microfluidic sensors for haloalkane sensing, and advance the in-depth fundamental understanding of the physical origin of anion-exchanged nanocrystals.


Author(s):  
Ananthakumar Soosaimanickam ◽  
Pedro J. Rodríguez-Cantó ◽  
Juan P. Martínez-Pastor ◽  
Rafael Abargues

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