Room-Temperature Stable Noncovalent Charge-Transfer Dianion Biradical to Produce Singlet Oxygen by Visible or Near-Infrared Light Photoexcitation

2021 ◽  
pp. 4306-4312
Author(s):  
Guanheng Huang ◽  
Jiayu Li ◽  
Ziqi Deng ◽  
Jinghong Li ◽  
Shanshan Sun ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Singlet Oxygen ◽  
Room Temperature ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light

Oxygen-Enhanced Upconversion of near Infrared Light from Below the Silicon Band Gap

2019 ◽  
Author(s):  
Timothy Schmidt ◽  
Elham Gholizadeh ◽  
Shyamal Prasad ◽  
Zhi Li Teh ◽  
Thilini Ishwara ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Band Gap ◽  
Near Infrared ◽  
Infrared Light ◽  
Triplet States ◽  
Near Infrared Light ◽  
Semiconductor Nanocrystal ◽  
Photochemical Processes

<div>Here we demonstrate an upconversion composition using semiconductor nanocrystal sensitizers that employs molecular triplet states below the singlet oxygen energy. We show that, contrary to the usual expectation, the admission of oxygen enhances the intensity of upconverted light and significantly speeds up the photochemical processes involved. Further, we demonstrate photochemical upconversion from below the silicon band gap in the presence of oxygen.</div>

n-type β-FeSi2/intrinsic-Si/p-type Si heterojunction photodiodes for near-infrared light detection at room temperature

2009 ◽  
Vol 95 (16) ◽  
pp. 162102 ◽  
Author(s):  
Mahmoud Shaban ◽  
Shota Izumi ◽  
Keita Nomoto ◽  
Tsuyoshi Yoshitake
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Infrared Light ◽  
Light Detection ◽  
Near Infrared Light ◽  
P Type

Interface coassembly of mesoporous MoS2 based-frameworks for enhanced near-infrared light driven photocatalysis

2016 ◽  
Vol 52 (38) ◽  
pp. 6431-6434 ◽  
Author(s):  
Lihua Zhi ◽  
Haoli Zhang ◽  
Zhengyin Yang ◽  
Weisheng Liu ◽  
Baodui Wang
Keyword(s):  
Photocatalytic Activity ◽  
Room Temperature ◽  
Near Infrared ◽  
Three Dimensional ◽  
Infrared Light ◽  
Direct Arylation ◽  
Near Infrared Light ◽  
Nir Light ◽  
Hybrid Framework ◽  
First Time

The three-dimensional porous Fe3O4@Cu2−xS–MoS2 framework is reported for the first time. Such a hybrid framework exhibits excellent NIR-light photocatalytic activity and stable cycling for the direct arylation of heteroaromatics at room temperature.

scholarly journals Near infrared-light responsive WS2 microengines with high-performance electro- and photo-catalytic activities

2020 ◽  
Vol 11 (1) ◽  
pp. 132-140 ◽  
Author(s):  
Víctor de la Asunción-Nadal ◽  
Beatriz Jurado-Sánchez ◽  
Luis Vázquez ◽  
Alberto Escarpa
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Near Infrared ◽  
Tungsten Disulfide ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Catalytic Activities ◽  
Electrochemical Approach

Tungsten disulfide based micromotors with enhanced electrochemical and photo-catalytic activities are synthesized using a simple electrochemical approach at room temperature without further building chemistry.

Oxygen-Enhanced Upconversion of near Infrared Light from Below the Silicon Band Gap

2019 ◽  
Author(s):  
Timothy Schmidt ◽  
Elham Gholizadeh ◽  
Shyamal Prasad ◽  
Zhi Li Teh ◽  
Thilini Ishwara ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Band Gap ◽  
Near Infrared ◽  
Infrared Light ◽  
Triplet States ◽  
Near Infrared Light ◽  
Semiconductor Nanocrystal ◽  
Photochemical Processes

<div>Here we demonstrate an upconversion composition using semiconductor nanocrystal sensitizers that employs molecular triplet states below the singlet oxygen energy. We show that, contrary to the usual expectation, the admission of oxygen enhances the intensity of upconverted light and significantly speeds up the photochemical processes involved. Further, we demonstrate photochemical upconversion from below the silicon band gap in the presence of oxygen.</div>

Enhanced Photocatalytic Activity of Cu1.8Se/CuAgSe for Organic Pollutants under Visible and Near-Infrared Light

2018 ◽  
Vol 281 ◽  
pp. 825-829
Author(s):  
Li Na Qiao ◽  
Ming Rui Tang ◽  
Yong Yun Gang ◽  
Hao Min Xu ◽  
Yuan Hua Lin
Keyword(s):  
Photocatalytic Activity ◽  
Room Temperature ◽  
Near Infrared ◽  
Uv Light ◽  
Infrared Light ◽  
Precipitation Method ◽  
Near Infrared Light ◽  
Step Process ◽  
Ion Exchange Reaction ◽  
Light Region

The Cu1.8Se/CuAgSe nanostructure was synthesized by a simple two-step process. Starting with the template of cubic Cu1.8Se nanoplate by precipitation method, Cu1.8Se/CuAgSe nanostructure and ternary CuAgSe were prepared through a rapid ion exchange reaction using various amount of AgNO3 at room temperature. The as-prepared samples were analyzed by XRD, SEM and DRS. It was found that Cu1.8Se/CuAgSe heterostructure and the pure CuAgSe phase were formed without changing the morphology, and these samples had efficient light absorption from UV light to near-infrared light region. Photocatalytic properties of these samples were evaluated by the degradation of Congo red under visible and near-infrared light. The Cu1.8Se/CuAgSe nanostructure showed enhanced photocatalytic activity due to the lower recombination of charge-carrier in the photodegradation process.

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