Room-Temperature Long-Lived 3IL Excited State of Rhodamine in an NN PtII Bis(acetylide) Complex with Intense Visible-Light Absorption

2011 ◽  
Vol 2011 (29) ◽  
pp. 4527-4533 ◽  
Author(s):  
Ling Huang ◽  
Le Zeng ◽  
Huimin Guo ◽  
Wanhua Wu ◽  
Wenting Wu ◽  
...  
Keyword(s):  
Excited State ◽  
Visible Light ◽  
Light Absorption ◽  
Room Temperature ◽  
Visible Light Absorption

scholarly journals Enhancing the Visible-Light Absorption and Excited-State Properties of Cu(I) MLCT Excited States

2018 ◽  
Vol 57 (4) ◽  
pp. 2296-2307 ◽  
Author(s):  
Sofia Garakyaraghi ◽  
Catherine E. McCusker ◽  
Saba Khan ◽  
Petr Koutnik ◽  
Anh Thy Bui ◽  
...  
Keyword(s):  
Excited State ◽  
Visible Light ◽  
Excited States ◽  
Light Absorption ◽  
Visible Light Absorption

Synthesis and photophysical properties of ruthenium(ii) polyimine complexes decorated with flavin

2018 ◽  
Vol 20 (25) ◽  
pp. 17504-17516 ◽  
Author(s):  
Huimin Guo ◽  
Lijuan Zhu ◽  
Can Dang ◽  
Jianzhang Zhao ◽  
Bernhard Dick
Keyword(s):  
Excited State ◽  
Visible Light ◽  
Light Absorption ◽  
Photophysical Properties ◽  
Triplet Excited State ◽  
Visible Light Absorption ◽  
First Time

Phosphorescent emission from a flavin localized triplet excited state (3IL) is observed for the first time in a flavin decorated tris(dipyridine) Ru(ii) complex with strong visible light absorption.

Excited state electron transfer after visible light absorption by the Co(i) state of vitamin B12

2014 ◽  
Vol 50 (87) ◽  
pp. 13304-13306 ◽  
Author(s):  
Darren Achey ◽  
Erinn C. Brigham ◽  
Brian N. DiMarco ◽  
Gerald J. Meyer
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Visible Light ◽  
Vitamin B12 ◽  
Light Absorption ◽  
Excitation Wavelength ◽  
Vitamin B ◽  
Visible Light Absorption ◽  
State Electron

The Co(i) form of vitamin B12 was found to undergo excitation wavelength-dependent excited state electron transfer to TiO2.

scholarly journals Improved Visible Light Absorption of Potent Iridium(III) Photo-oxidants for Excited-State Electron Transfer Chemistry

2020 ◽  
Vol 142 (6) ◽  
pp. 2732-2737 ◽  
Author(s):  
Robin Bevernaegie ◽  
Sara A. M. Wehlin ◽  
Eric J. Piechota ◽  
Michael Abraham ◽  
Christian Philouze ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Visible Light ◽  
Light Absorption ◽  
Visible Light Absorption ◽  
State Electron

Switching of the triplet excited state of rhodamine-C60 dyads

2014 ◽  
Vol 50 (98) ◽  
pp. 15627-15630 ◽  
Author(s):  
Fen Wang ◽  
Xiaoneng Cui ◽  
Zhangrong Lou ◽  
Jianzhang Zhao ◽  
Ming Bao ◽  
...  
Keyword(s):  
Excited State ◽  
Visible Light ◽  
Triplet State ◽  
Light Absorption ◽  
Triplet Excited State ◽  
Visible Light Absorption ◽  
State Production

Rhodamine was used as an acid-responsive moiety for switching of the triplet state production and visible light absorption of rhodamine-C60 dyads.

Impact of Rutile Fraction on TiO2 Visible-Light Absorption and Visible-Light-Induced Photocatalytic Activity

2018 ◽  
Author(s):  
David Maria Tobaldi ◽  
Luc Lajaunie ◽  
ana caetano ◽  
nejc rozman ◽  
Maria Paula Seabra ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Solid Phase ◽  
Diffraction Method ◽  
Band Alignment ◽  
Quantitative Phase Analysis ◽  
Transmission Microscopy ◽  
Visible Light Absorption ◽  
X Ray

<div>Titanium dioxide is by far the most utilised semiconductor material for photocatalytic applications. Still, it is transparent to visible-light. Recently, it has been proved that a type-II band alignment for the rutile−anatase mixture would improve its visible-light absorption.</div><div>In this research paper we thoroughly characterised the real crystalline and amorphous phases of synthesised titanias – thermally treated at different temperatures to get distinct ratios of anatase-rutile-amorphous fraction – as well as that of three commercially available photocatalytic nano-TiO2. </div><div>The structural characterisation was done via advanced X-ray diffraction method, namely the Rietveld-RIR method, to attain a full quantitative phase analysis of the specimens. The microstructure was also investigated via an advanced X-ray method, the whole powder pattern modelling. These methods were validated combining advanced aberration-corrected scanning transmission microscopy and high-resolution electron energy-loss spectroscopy. The photocatalytic activity was assessed in the liquid- and gas-solid phase (employing rhodamine B and 4-chlorophenol, and isopropanol, respectively, as the organic substances to degrade) using a light source irradiating exclusively in the visible-range.</div><div>Optical spectroscopy showed that even a small fraction of rutile (2 wt%) is able to shift to lower energies the apparent optical band gap of an anatase-rutile mixed phase. But is this enough to attain a real photocatalytic activity promoted by merely visible-light?</div><div>We tried to give a reply to that question.</div><div>Photocatalytic activity results in the liquid-solid phase showed that a high surface hydroxylation led to specimen with superior visible light-induced catalytic activity (i.e. dye and ligand-to-metal charge transfer complexes sensitisation effects). That is: not photocatalysis <i>sensu-strictu</i>.</div><div>On the other hand, the gas-solid phase results showed that a higher amount of the rutile fraction (around 10 wt%), together with less recombination of the charge carriers, were more effective for an actual photocatalytic oxidation of isopropanol.</div>

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