[meso-Tetrakis(pentafluorophenyl)porphyrinato]platinum(ii) as an efficient, oxidation-resistant red phosphor: spectroscopic properties and applications in organic light-emitting diodesElectronic supplementary information available: details of photoluminescence measurements, transient absorption spectra of PtF20TPP, photophysical properties of PtF20TPP in different solvents, EL spectra and performances of OLEDs using PtF20TPP as emitters at various doping levels and crystallographic data for PtF20TPP. See http://www.rsc.org/suppdata/jm/b2/b212204a/

2003 ◽  
Vol 13 (6) ◽  
pp. 1362 ◽  
Author(s):  
Chi-Ming Che ◽  
Yuan-Jun Hou ◽  
Michael C. W. Chan ◽  
Jianhua Guo ◽  
Yu Liu ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Spectroscopic Properties ◽  
Supplementary Information ◽  
Red Phosphor ◽  
Light Emitting ◽  
Transient Absorption Spectra ◽  
Organic Light ◽  
Oxidation Resistant

scholarly journals Effect of Some Substituents Increasing the Solubility of Zn(II) and Al(III) Phthalocyanines on Their Photophysical Properties

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
A. A. Chernonosov ◽  
E. A. Ermilov ◽  
B. Röder ◽  
L. I. Solovyova ◽  
O. S. Fedorova
Keyword(s):  
Absorption Spectra ◽  
Structural Changes ◽  
Water Solubility ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Water Soluble ◽  
Quantum Yields ◽  
Carboxyl Groups ◽  
Transient Absorption Spectra ◽  
Photochemical Properties

Water solubility of phthalocyanines (Pcs) usually increases by the introduction of charged or carboxy substituents in the peripheral positions of the macrocycle. As a result, such structural changes influence their photophysical and photochemical properties as photosensitizers. Phthalocyanines substituted with four or eight terminal carboxyl groups and having in some cases additional eight positive charges (water soluble phthalocyanines) were studied in order to evaluate the spectroscopic and photophysical effects of these side residues on the chromophore properties. The quantum yield of singlet oxygen (O12) generation, the triplet-triplet absorption, and the transient absorption spectra were measured and linked to the structure of the substituents. It was shown that charged substituents did not change the quantum yields ofO12generation but decrease its lifetimes. The introduction of the charged substituents not only increases the water solubility but also significantly changes absorption, fluorescence, and transient absorption spectra of water soluble Pcs.

Photophysical properties of pyridinium salts derived from purine bases

1990 ◽  
Vol 68 (12) ◽  
pp. 2164-2170 ◽  
Author(s):  
Bohdan Skalski ◽  
Stefan Paszyc ◽  
Ryszard W. Adamiak ◽  
Ronald P. Steer ◽  
Ronald E. Verrall
Keyword(s):  
Absorption Spectra ◽  
Fluorescence Spectra ◽  
Room Temperature ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Pyridinium Salts ◽  
Excited Triplet ◽  
Transient Absorption Spectra ◽  
Counter Ions ◽  
Phosphorescence Spectra

The absorption spectra, fluorescence spectra, fluorescence lifetimes, fluorescence quenching, phosphorescence spectra, phosphorescence lifetimes, and picosecond transient absorption spectra of several purinyl-pyridinium salts have been measured in several solvents at room temperature and in ethanol glasses at 77 K. It is concluded that the previously observed photochemical transformation of N-[9-(2′,3′,5′-tri-O-acetyl-β-D-ribofuranosyl)purin-6-yl]pyridinium chloride 1 into the highly fluorescent tri-O-acetylluminarosine 6 occurs via an excited triplet state. It is also shown that intersystem crossing in purinyl-pyridinium salts is induced by an intermolecular charge-transfer interaction with the counter ions. Keywords: purinyl-pyridinium salts, fluorescence, phosphorescence.

Testing the fate of nascent holes in CdSe Nanocrystals with sub 10 fs pump-probe spectroscopy

Nanoscale ◽  
2021 ◽  
Author(s):  
Jayanta Dana ◽  
Omer Haggag ◽  
Morin Mor ◽  
Joanna Dehnel ◽  
E Liftschitz ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Transient Absorption ◽  
Cdse Nanocrystals ◽  
Pump Probe ◽  
Light Emitting ◽  
Transient Absorption Spectra ◽  
Probe Spectroscopy ◽  
State Filling

Numerous studies have reported that transient absorption spectra in core CdSe nanocrystals do not register state filling in 1Sh, an absence which has profound consequences in light emitting applications. It...

Kinetic-Model-Free Analysis of Transient Absorption Spectra Enabled by 2D Correlation Analysis

2021 ◽  
pp. 4148-4153
Author(s):  
Julian Hniopek ◽  
Carolin Müller ◽  
Thomas Bocklitz ◽  
Michael Schmitt ◽  
Benjamin Dietzek ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Correlation Analysis ◽  
Absorption Spectra ◽  
Transient Absorption ◽  
Transient Absorption Spectra ◽  
Model Free ◽  
2D Correlation Analysis

Graphical analysis of transient absorption spectra using the phasor approach

2015 ◽  
Vol 32 (8) ◽  
pp. 1693
Author(s):  
Hong Liu ◽  
Yulei Bai ◽  
Yun Zhang ◽  
Shuangli Ye ◽  
Weichao Xu ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Transient Absorption ◽  
Graphical Analysis ◽  
Transient Absorption Spectra
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