Solvent-Dependent Photophysical Properties of a Semiconducting One-Dimensional Silver Cluster-Assembled Material

2021 ◽  
Author(s):  
Anish Kumar Das ◽  
Sourav Biswas ◽  
Surya Sekhar Manna ◽  
Biswarup Pathak ◽  
Sukhendu Mandal
Keyword(s):  
Photophysical Properties ◽  
Silver Cluster ◽  
One Dimensional

scholarly journals Investigation of the Photophysical Properties of a Eu3+ Coordination Polymer Bearing an α-Nitrile Substituted β-Diketonate Ligand via Emission and Ultrafast Transient Absorption Spectroscopy

2015 ◽  
Vol 68 (9) ◽  
pp. 1392 ◽  
Author(s):  
Brodie L. Reid ◽  
Evan G. Moore ◽  
Brian W. Skelton ◽  
Mark I. Ogden ◽  
Massimiliano Massi
Keyword(s):  
Coordination Polymer ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Transient Absorption Spectroscopy ◽  
Quantum Yields ◽  
Metal Centre ◽  
Antenna Effect ◽  
One Dimensional ◽  
Polymer Bearing

Reaction of the β-diketone ligand, 2-cyano-1,3-phenyl-1,3-propandione (LH), with hydrated EuCl3 in the presence of 1,10-phenanthroline (Phen), results in the crystallisation of a one-dimensional Eu3+ coordination polymer of formulation [Eu(Phen)(L)3]∞, formed by coordination of the nitrile group of an O,O′-bound ligand to a neighbouring metal centre. An investigation of the metal-centred emission of the polymer, both in the solid state and solution, revealed red emission characterised by relatively long-lived excited state lifetimes and high intrinsic quantum yields. However, analysis of the overall quantum yield and sensitisation efficiency reveals that ultrafast processes in the ligand potentially inhibit Eu3+ sensitisation. Further investigations into these processes using transient absorption spectroscopy suggest that substitution at the α-C position may significantly decrease sensitisation via the antenna effect.

A one-dimensional manganese(III)–porphyrin coordination polymer: crystal structure and photophysical properties

2020 ◽  
Vol 76 (5) ◽  
pp. 375-380
Author(s):  
Wen-Tong Chen
Keyword(s):  
Crystal Structure ◽  
Charge Transfer ◽  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Photophysical Properties ◽  
Ethanol Solution ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
Dimensional Network ◽  
Ligand Charge Transfer

A novel manganese(III)–porphyrin complex, namely, catena-poly[[chloridomanganese(III)]-μ2-5,10,15,20-tetrakis(pyridin-3-yl)-21H,23H-porphinato(2−)-κ5 N 21,N 22,N 23,N 24:N 5], [MnCl(C40H24N8)] n , 1, was prepared by the hydrothermal reaction of manganese chloride with 5,10,15,20-tetrakis(pyridin-3-yl)-21H,23H-porphine. The crystal structure was determined by single-crystal X-ray diffraction. The porphyrin macrocycle exhibits a saddle-like distortion geometry. The MnIII atom has a six-coordination geometry. Each porphyrin unit links to two neighbouring units to yield a one-dimensional coordination polymer. These chains are further interlinked by hydrogen bonds to form a two-dimensional network. The complex shows red photoluminescence emission bands in ethanol solution, which can be attributed to ligand-to-ligand charge transfer (LLCT) accompanied by partial metal-to-ligand charge transfer (MLCT), as revealed by TDDFT calculations.

scholarly journals Crystal Structure and Photophysical Properties of a Novel Dy-Hg Isonicotinic Acid Compound with One-Dimensional Chain-Like Cations

2020 ◽  
Vol 67 (4) ◽  
pp. 1111-1117
Author(s):  
Wen-Tong Chen
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Emission Band ◽  
Hydrothermal Reaction ◽  
Isonicotinic Acid ◽  
Photophysical Properties ◽  
Diffuse Reflectance Spectrum ◽  
Yellow Emission ◽  
Monoclinic System ◽  
One Dimensional

A novel Dy-Hg compound [Dy(HIA)3(H2O)2]2n · 2nHgCl4 · nHgCl5 · nH3O · 3nH2O (1; HIA = isonicotinic acid) was prepared through a hydrothermal reaction and characterized by X-ray diffraction. The compound crystallizes in the space group of C2/c of the monoclinic system. The crystal structure of compound 1 has one-dimensional (1-D) chain-like cations. A photoluminescence experiment with a solid-state sample revealed that this compound exhibits a yellow emission band at 575 nm and, this emission band shall come from the 4f electron 4F9/2 → 6H13/2 characteristic transfer of Dy3+ ions. The compound features CIE chromaticity coordinates of 0.5168 and 0.4824 in the yellow region. A UV-visible diffuse reflectance spectrum with a solid-state sample unveiled that this compound possesses a wide optical band gap of 3.39 eV.

Tailoring the photophysical properties of carbon nanotubes by photonic nanostructures

2015 ◽  
Vol 29 (17) ◽  
pp. 1530004 ◽  
Author(s):  
Xuedan Ma ◽  
Han Htoon
Keyword(s):  
Carbon Nanotubes ◽  
Photophysical Properties ◽  
Single Walled Carbon Nanotubes ◽  
One Dimensional ◽  
Research Activities ◽  
Plasmonic Structures ◽  
Wide Range ◽  
Potential Applications ◽  
The Rich ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) are nearly ideal one-dimensional systems with potential applications in a wide range of fields. The rich physics of SWCNTs arise from the excitonic nature of their photophysical properties. This review is focused on the results of novel research activities that explore how the photophysical properties of SWCNTs can be altered via their integration with photonic nanostructures including plasmonic structures and photonic microcavities that have resulted in phenomena such as photocurrent enhancement, selection rule breakdown and photoluminescence (PL) modification.

Novel class of water-soluble phosphonate silver cluster assembled material for efficient photoelectric sensing and photoacoustic imaging

Nanoscale ◽  
2021 ◽  
Author(s):  
Sourav Biswas ◽  
Anish Kumar Das ◽  
Akashdeep Nath ◽  
Souradip Paul ◽  
M. Suheshkumar Singh ◽  
...  
Keyword(s):  
Photoacoustic Imaging ◽  
Silver Cluster ◽  
Water Soluble ◽  
One Dimensional ◽  
Total Structure

Herein, we unreveal the total structure of an atom-precise one-dimensional silver cluster assembled material possessing innovative and significant properties that are rarely observed in its analogues.

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