Accessing Highly Efficient Photothermal Conversion with Stable Open‐Shell Aromatic Nitric Acid Radicals

2022 ◽  
Author(s):  
Zejun Wang ◽  
Jiawen Zhou ◽  
Yiheng Zhang ◽  
Weiya Zhu ◽  
Yuan Li
Keyword(s):  
Nitric Acid ◽  
Open Shell ◽  
Photothermal Conversion ◽  
Highly Efficient

scholarly journals Stable open-shell aromatic nitric acid radicals: accessing highly efficient photothermal conversion with restricted radiative decay

2021 ◽  
Author(s):  
zejun wang ◽  
Zhou Jiawen ◽  
Yiheng Zhang ◽  
Weiya Zhu ◽  
Yuan Li
Keyword(s):  
Nitric Acid ◽  
Evaporation Rate ◽  
Radiative Decay ◽  
Closed Shell ◽  
Open Shell ◽  
Water Evaporation ◽  
Spin Concentration ◽  
Resonance Structures ◽  
Photothermal Conversion ◽  
Acid Radical

Most of the open-shell radicals are usually thermodynamically or kinetically unstable in air due to their incompletely satisfied valency. As phenol radical without steric hindrance group protection, aromatic nitric acid radical exhibits high electrochemical and thermal stability due to its rich resonance structures including closed-shell nitro-like and open-shell nitroxide structure with unpaired electrons delocalized in conjugated backbones. Herein, a series of star-shaped aromatic nitric acid radical materials were prepared via facile demethylation and consequent oxidation of their phenolic hydroxyl precursors in air. Interestingly, they exhibit extremely high spin concentration and highly enhanced nonradiative decay, which make them exhibit great potential for photothermal conversion. Among them, TPA-TPA-O6 exhibits high photothermal conversion efficiency and negligible photobleaching effect in seawater desalination. Under irradiation of one sunlight, the water evaporation efficiency of TPA-TPA-O6 is recorded as high as 89.41% and the water evaporation rate is 1.293 kg/m2 h, which represent as the top performance in pure organic small molecule photothermal materials.

Highly Efficient Photothermal Conversion and Water Transport During Solar Evaporation Enabled by Amorphous Hollow Multishelled Nanocomposites

2021 ◽  
pp. 2107400
Author(s):  
Xuanbo Chen ◽  
Nailiang Yang ◽  
Yanlei Wang ◽  
Hongyan He ◽  
Jiangyan Wang ◽  
...  
Keyword(s):  
Water Transport ◽  
Photothermal Conversion ◽  
Highly Efficient

Highly efficient and selective extraction of Pu(IV) using two alkyl-substituted amides of nitrilo triacetic acid from nitric acid solutions

2021 ◽  
Vol 279 ◽  
pp. 119584
Author(s):  
Ananda Karak ◽  
Bholanath Mahanty ◽  
Prasanta K. Mohapatra ◽  
Richard J. M. Egberink ◽  
Thichur P. Valsala ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Selective Extraction ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Highly Efficient

Highly Efficient NIR-II Photothermal Conversion Based on an Organic Conjugated Polymer

2016 ◽  
Vol 29 (2) ◽  
pp. 718-725 ◽  
Author(s):  
Yuanyuan Cao ◽  
Jin-Hu Dou ◽  
Ning-jiu Zhao ◽  
Shiming Zhang ◽  
Yu-Qing Zheng ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Photothermal Conversion ◽  
Highly Efficient

Copper–cobalt synergy in Cu1−xCoxFe2O4spinel ferrite as a highly efficient and regioselective nanocatalyst for the synthesis of 2,4-dinitrotoluene

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71911-71921 ◽  
Author(s):  
Reza Fareghi-Alamdari ◽  
Farzad Zandi ◽  
Mohammad Hossein Keshavarz
Keyword(s):  
Nitric Acid ◽  
Highly Efficient

Highly regioselective dinitration of toluene with nitric acid as nitrating agent in the presence of Cu1−xCoxFe2O4(0 ≤x≤ 1) as nanocatalysts is described.

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