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The development of light-emitting complexes and the exploration of new luminescent materials

Author: LaiWei
Tutor: NiuShuYun
School: Liaoning Normal University
Course: Physical and chemical
Keywords: Emitting complexes Luminescent materials Fluorescence Properties Fluorescence intensity Metal Complexes Optical wavelength Standard compounds Raw material compounds Emitting principle Light-emitting process
CLC: TQ422
Type: Master's thesis
Year: 2002
Downloads: 1
Quote: 1
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Abstract


Conventional and unconventional methods , synthesis of the five kinds of fluorescent properties of metal complexes ( 1 to 5) , to obtain a single crystal . By X-ray four circle diffraction measurement and determine the structure ( in addition to the compound (3) outside ), the nature of each compound FP, UV-VIS-NIR, IR spectra having the formula as follows : ( 1 ) Eu2 ( phen ) 2 (C6H5COO ) 6 ( 2 ) of Sm (phen ) 2 (CH3COO ) 3 ( 3 ) Tb2 (phen) 2 (C6H5COO) 6 (4) [Tb2 (C6H5COO) 8] [Ni (phen) 3] (5) [Nd (oxinate) (phen) 2 (NO3) 2] 2 (CH3OH (6) [Eu2 (C6H5COO) 8] [Ni (phen) 3] (4H2O (7) Sm2 (C6H5COO) 4 (CH3COO) 2 (phen) 2 (8) Sm2 (C6H5COO) 6 (phen) 2 (9) [Co ( phen) 2 (H2O)] 2 (tpha) (NO3) 2 (2C2H5OH This article focuses on the synthesis of 5 species ( 1 to 5) and the existing four kinds of complexes ( 6-9) were the fluorescence spectrum and excitation spectrum of study found that 9 complexes have fluorescence properties at room temperature , and light-emitting principle and light-emitting process discussed by comparison of the fluorescence intensity of the reference material ( corresponding starting compounds ) found that the fluorescence of the eight kinds of rare earth complexes nature compared to the reference substance has a different degree of change which is obvious of the two aspects are: 1. maximum emission wavelength constant in the case of the fluorescence intensity greatly enhanced. 2 to change the light emission wavelength at the same time enhance the fluorescence intensity . analysis of the fluorescence intensity with an organic the ligand , metal ion , and the relationship of the molecular structure , the draw of the main factors affecting the fluorescence properties for guiding how to obtain complexes having good luminescence properties , as well as by changing the organic ligands and the molecular structure to control the light emitting of the complexes important reference wavelength and luminous intensity . important in the design and synthesis of complexes controlled emission wavelength light-emitting materials .

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