نتایج جستجو برای: visible

تعداد نتایج: 76201  

Journal: :Chemical communications 2013
Maxim A Nasalevich Maarten G Goesten Tom J Savenije Freek Kapteijn Jorge Gascon

Correction for 'Enhancing optical absorption of metal-organic frameworks for improved visible light photocatalysis' by Maxim A. Nasalevich et al., Chem. Commun., 2013, 49, 10575-10577.

Journal: :Chemical communications 2014
Po Wu Jiarui Wang Jing Zhao Liejin Guo Frank E Osterloh

A high rate of 2.23 mmol h(-1) g(-1) (quantum efficiency of 6.67% at 400 nm) for visible light driven photocatalytic H2 evolution can be achieved with g-C3N4 by alkalization of the solution to a pH of 13.3, due to accelerated transfer of photoholes to the sacrificial donor.

Journal: :Optics express 2016
Lingjiao Chen Jiaheng Wang Jiantao Zhou Derrick Wing Kwan Ng Robert Schober Chunming Zhao

Visible light communication (VLC) networks, consisting of multiple light-emitting diodes (LEDs) acting as optical access points (APs), can provide low-cost high-rate data transmission to multiple users simultaneously in indoor environments. However, the performance of VLC networks is severely limited by the interference between different users. In this paper, we establish a distributed user-cen...

2016
Pierre Querard Inna Perepichka Eli Zysman-Colman Chao-Jun Li

This report describes a highly enantioselective oxidative sp3 C-H arylation of N-aryltetrahydroisoquinolines (THIQs) through a dual catalysis platform. The combination of the photoredox catalyst, [Ir(ppy)2(dtbbpy)]PF6, and chiral copper catalysts provide a mild and highly effective sp3 C-H asymmetric arylation of THIQs.

Journal: :Organic & biomolecular chemistry 2015
Qing-Yu Lin Xiu-Hua Xu Feng-Ling Qing

A visible light-induced selective hydrobromodifluoromethylation of alkenes using CF2Br2 was developed. This transformation proceeded smoothly in the presence of catalytic eosin Y at room temperature to give various hydrobromodifluoromethylated compounds with broad functional group tolerance.

Journal: :Journal of colloid and interface science 2009
Gang Liu Xuewen Wang Lianzhou Wang Zhigang Chen Feng Li Gao Qing Max Lu Hui-Ming Cheng

Nitrogen doped mesoporous TiO(2) was prepared via a modified two-step hydrothermal route. In contrast to undoped mesoporous TiO(2), nitrogen doped mesoporous TiO(2) has superior photocatalytic activity under both UV and visible light irradiation. Photoluminescence spectra reveal that nitrogen doped mesoporous TiO(2) possesses abundant surface states, which can play a vital role in trapping phot...

Journal: :Chemical communications 2011
Venkata Bharat Ram Boppana Feng Jiao

Nanostructured MnO(2) exhibits a high turnover frequency for oxygen evolution under visible light and high stability in strong acidic conditions.

Journal: :Chemical communications 2016
Vincent Gauchot Ai-Lan Lee

A dual visible light photoredox and gold-catalysed C(sp(2))-C(sp(2)) cross coupling is described. The success of this mild, oxidant- and base-free cross coupling is highly dependent on the amount of water added. Mechanistic studies show two distinct pathways depending on the gold catalyst employed: transmetallation of the arylboronic acid with gold(i) occurs prior to oxidation of gold(i) to gol...

Journal: :Nature nanotechnology 2012
Karthik Kumar Huigao Duan Ravi S Hegde Samuel C W Koh Jennifer N Wei Joel K W Yang

The highest possible resolution for printed colour images is determined by the diffraction limit of visible light. To achieve this limit, individual colour elements (or pixels) with a pitch of 250 nm are required, translating into printed images at a resolution of ∼100,000 dots per inch (d.p.i.). However, methods for dispensing multiple colourants or fabricating structural colour through plasmo...

Journal: :The FASEB Journal 2019

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید