scholarly journals Three-dimensional AlN microroses and their enhanced photoluminescence properties

2008 ◽  
pp. 5221 ◽  
Author(s):  
Weiwei Lei ◽  
Jian Zhang ◽  
Dan Liu ◽  
Pinwen Zhu ◽  
Qiliang Cui ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Photoluminescence Properties ◽  
Enhanced Photoluminescence

Ag Nanoparticles-Enhanced Photoluminescence in LaPO4 : Eu Three-Dimensional Ordered Macroporous Films

2015 ◽  
Vol 98 (5) ◽  
pp. 1562-1566 ◽  
Author(s):  
Jun Li ◽  
Zhengwen Yang ◽  
Bo Shao ◽  
Jiayan Liao ◽  
Shenfeng Lai ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Three Dimensional ◽  
Enhanced Photoluminescence ◽  
Ordered Macroporous

Perovskite hollow cubes: morphological control, three-dimensional twinning and intensely enhanced photoluminescence

2008 ◽  
Vol 18 (30) ◽  
pp. 3543 ◽  
Author(s):  
Xianfeng Yang ◽  
Ian D. Williams ◽  
Jian Chen ◽  
Jing Wang ◽  
Huifang Xu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Morphological Control ◽  
Enhanced Photoluminescence

Enhanced Photoluminescence of YInGe2O7:Eu3+,Li+ Phosphor Prepared Using the Solid-State Method

2013 ◽  
Vol 684 ◽  
pp. 274-278
Author(s):  
Huang Yu Chen ◽  
Ru Yuan Yang ◽  
Shoou Jinn Chang
Keyword(s):  
Solid State ◽  
Red Light ◽  
Broad Band ◽  
Lithium Carbonate ◽  
Ion Concentration ◽  
Photoluminescence Intensity ◽  
Photoluminescence Properties ◽  
Solid State Method ◽  
Enhanced Photoluminescence ◽  
Transfer State

A Eu3+ activated YInGe2O7phosphor was synthesized by solid-state reaction and lithium carbonate was added to change the morphology and photoluminescence properties. Scanning electron microscopy showed large particle size and necking shape were obtained as the concentrations of Li+ ions increase. In the PL studies, the excitation spectrum of YInGe2O7:Eu3+ phosphors exhibited a broad band in the UV region centered at about 272 nm attributed to charge transfer state (CTS) band, which has a little shift after Li+ ion was added. As the Li+ ion concentration increased, the photoluminescence intensity of the red emission at 620 nm of Eu3+ ions was enhanced, and the optimized concentration of of added Li+ ion is 0.05. The results showed that addition of Li+ ion allows YInGe2O7:Eu3+ phosphors emitting relatively pure red light.

Pyramid-Shaped Si/Ge Superlattice Quantum Dots with Enhanced Photoluminescence Properties

2006 ◽  
Vol 18 (3) ◽  
pp. 367-370 ◽  
Author(s):  
H.-C. Chen ◽  
C.-W. Wang ◽  
S.-W. Lee ◽  
L.-J. Chen
Keyword(s):  
Quantum Dots ◽  
Photoluminescence Properties ◽  
Enhanced Photoluminescence

A three-dimensional manganese(II) coordination polymer with two functional properties: magnetism and photochemical detection

2021 ◽  
Vol 77 (12) ◽  
Author(s):  
Dan Zhao ◽  
Yanyan An ◽  
Tingting Guo ◽  
Juanzhi Yan ◽  
Danmei Song
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Three Dimensional ◽  
Building Blocks ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Detection Mechanism ◽  
Susceptibility Data ◽  
Dichromate Ions ◽  
Ditopic Ligand

Hydrothermal reaction of Mn2+ with the ditopic ligand 2,5-bis(1H-1,2,4-triazol-1-yl)benzoic acid (Hdtba) resulted in the complex poly[aqua[μ3-2,5-bis(1H-1,2,4-triazol-1-yl)benzoato-κ3 N 4:N 4′:O]chloridomanganese(II)] monohydrate], {[Mn(C11H7N6O2)Cl(H2O)]·H2O} n , (I). Coordination polymer I has been characterized by X-ray diffraction, IR spectroscopy, elemental analysis, thermogravimetry and susceptibility measurements. The topology of I corresponds to a three-dimensional (3,6)-conn net linked by {Mn2Cl2(COO)2} building blocks and dtba− anions. Significant antiferromagnetic exchange is observed within the dinuclear {Mn2Cl2(COO)2} subunits. A fit of the susceptibility data resulted in the magnetic parameters g = 1.93 and J = −1.52. Studies of the photoluminescence properties revealed that I represents a promising luminescence sensor for sensitively detecting dichromate ions in aqueous solution. The associated photochemical detection mechanism was studied in detail.

Structures and Photoluminescence Properties of Four Cadmium(II) Coordination Polymers Synthesized by Rigid Ligands and N-Donor Ligands

2015 ◽  
Vol 68 (5) ◽  
pp. 742 ◽  
Author(s):  
Qing-Guo Meng ◽  
Lin-Tong Wang ◽  
Ji-Tao Lu ◽  
Xin Wang ◽  
Wei Lu ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Photoluminescence Properties ◽  
Thermal Stabilities ◽  
Structure Comparison ◽  
Layer Compound ◽  
Carboxylate Groups ◽  
Secondary Building Units ◽  
Coordinated Water ◽  
Dna 2

Four metal–organic coordination polymers, [Cd2(dna)2(2,2′-bpy)2]n (1), {[Cd4(dna)4(im)3]·5H2O}n (2), {[Cd2(dna)2(4,4′-bpy)(H2O)2]·2EtOH}n (3), and {[Cd4(dna)4(1,3-dpp)4(H2O)4]·2H2O}n (4) (H2dna = 4,6-dimethyl-5-nitroisophthalic acid; 2,2′-bpy = 2,2′-bipyridine; im = imidazole; 4,4′-bpy = 4,4′-bipyridine; 1,3-dpp = 1,3-di(4-pyridyl)propane; and EtOH = ethanol, have been solvothermally synthesized and characterized. Compound 1 displays a one-dimensional (1D) ladder structure and the neighbouring ladders are further stabilized by π···π interactions to form a two-dimensional (2D) layer. Compound 2 forms a 2D layer based on infinite 1D [Cd2(COO)4]n chain and the im ligands act as terminal ligands, preventing expansion of the dimensionality. Compound 3 features a 2D 44-sql layer based on binuclear [Cd2(COO)4] secondary building units as 4-connected nodes, and is further linked to be an unusual three-dimensional (3D) supramolecular architecture by hydrogen bonds involving the coordinated water molecules, carboxylate groups, and lattice ethanol molecules. Compound 4 possesses a 2-fold interpenetrated dia net. The diverse structures and topologies of compounds 1–4 indicate that the N-containing ligands have significant effects on the formation of the final network structures. In addition, the thermal stabilities, structure comparison, and photoluminescence properties of the complexes have been investigated.

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