Results 161 to 170 of about 21,517 (199)

Lifetime Spectra for Room-Temperature Phosphorescence

Applied Spectroscopy, 1989
A large number of articles on the subject of Room Temperature Phosphorescence (RTP) on solid substrates have recently appeared in the literature, confirming the fact that multiple lifetimes are involved for the analyte. This is not an unexpected observation, considering the heterogeneity of the filter paper substrate employed and the large number of ...
K. A. Murray, E. Gonzalez, R. B. Gregory, K. W. Street   +3 more
openaire   +1 more source

Room Temperature Phosphorescence Optosensor for Terbium

Analytical Letters, 1996
Abstract A solid surface room temperature phosphorescence optosensing method has been developed for the determination of terbium(III) based on the adsorption of its binary complex with 1,4-bis (l'-phenyl-3′-methyl-5′-pyrazolone-4′-) butanedione-(1,4) (BPMPBD) onto the hydrogen form of a strong cation exchange resin packed in a flow cell in an aqueous ...
Zhilong Gong, Zhujun Zhang, Anyun Zhang
openaire   +1 more source

Room temperature phosphorescence optosensor for tetracyclines

Analytica Chimica Acta, 1993
Abstract A flow-through optosensor for tetracyclines based on the tetracycline-europium chelate room temperature phosphorescence energy transfer is proposed. The sensor is developed in conjunction with a flow-injection analysis system and is based on the transient immobilization on a non-ionic resin (packed in a flow-through cell) of the tetracycline-
Fausto Alava-Moreno, Marta Elena Díaz-García, Alfredo Sanz-Medel   +2 more
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Room-Temperature Phosphorescence of Impure Fluorene

Analytical Letters, 1990
Abstract Impurities in commercial fluorene were detected by thin-layer chromatography and identified by room-temperature phosphorimetry (RTP). Acenaphthene content was analyzed by the standard addition method by using normal RTP measurement procedures with T1(I) as the heavy atom.
L. Bruzzone, R. Badía
openaire   +1 more source

Room temperature phosphorescence optosensing for gadolinium

Mikrochimica Acta, 1997
An optosensing method for gadolinium based on the room-temperature phosphorescence behavior in aqueous solution induced by the transient adsorption of the complex formed by 1,4-bis (1′-phenyl-3′-methyl-5′-pyrazolone-4′-)butanedione (1,4) with Gd (III) on the chelating resin Chelex 100 (packed in a flow cell) is proposed.
Zhilong Gong, Zhujun Zhang
openaire   +1 more source

Solid-Surface Room Temperature Phosphorescence

2020
Luminescence can be defined as radiation emitted from atoms or molecules as they undergo a radiative transition from an excited state to a lower energy state. After the absorption of incident radiation, the emission of a photon during the radiative transition is called photoluminescence.
Santana Rodríguez, Jose Juan, Stephenson, James, Winefordnert, James D.   +2 more
openaire   +1 more source

Visible-light-excited organic room temperature phosphorescence

Materials Horizons
This review summarizes great advancements in visible-light-excited RTP, mainly focusing on the construction strategies, optical properties, underlying emission mechanisms, and innovative applications.
Longqiang Li, Depeng Liu, Jiayin Zhou, Min Qi, Guangqiang Yin, Tao Chen   +5 more
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Laser Phosphoroscope and Applications to Room-Temperature Phosphorescence

Applied Spectroscopy, 2011
A simple phosphoroscope with no moving parts is described. In one scan the total luminescence, the long-lived phosphorescence, and the short-lived fluorescence can be determined. A 50% duty cycle excitation from a diode laser is used to excite the sample, and from the digitized waveform the phosphorescence is extracted from the off period, the total ...
Sarah J, Payne, Guoqing, Zhang, James N, Demas, Cassandra L, Fraser, Ben A, Degraff   +4 more
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Stretchable organic room temperature phosphorescence systems

Journal of Materials Chemistry C
Recent progress in stretchable organic room temperature phosphorescence systems is reviewed.
Wanjuan Gao, Dan Li, Hua Feng, Zhongmin Su   +3 more
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Room Temperature Phosphorescence in Crystalline Iodinated Eumelanin Monomer

Chemistry – A European Journal
AbstractWe report the room temperature phosphorescence upon iodination on a crystalline eumelanin monomer with shielded hydroxyl moieties, ethyl 5,6‐dimethoxyindole‐2‐carboxylate (DMICE). Ultrafast intersystem crossing (ISC) is observed in the iodinated (IDMICE) as well as brominated (BDMICE) analogues of the eumelanin monomer derivative in solution ...
Kavya Vinod, Sohan D. Jadhav, Mahesh Hariharan   +2 more
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