scholarly journals Bridged Aromatic Oxo‐ and Thioethers with Intense Emission in Solution and the Solid State

2021 ◽  
Author(s):  
Steffen Riebe ◽  
Suliman Adam ◽  
Bibhisan Roy ◽  
Iván Maisuls ◽  
Constantin G. Daniliuc ◽  
...  
Keyword(s):  
Solid State ◽  
Intense Emission

scholarly journals Switching-On Fluorescence by Copper (II) and Basic Anions: A Case Study with a Pyrene-Functionalized Squaramide

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1301
Author(s):  
Giacomo Picci ◽  
Jessica Milia ◽  
Maria Carla Aragoni ◽  
Massimiliano Arca ◽  
Simon J. Coles ◽  
...  
Keyword(s):  
Solid State ◽  
Copper Complex ◽  
Receptor Complex ◽  
Emission Properties ◽  
Naked Eye ◽  
Intense Emission ◽  
Uv Lamp

The new symmetric acyclic N,N’-bis(1-pyrenyl) squaramide (H2L) functionalized with the pyrene moiety as a fluorogenic fragment has been designed and its ability to selectively detect specific anions and metals investigated. H2L selectively binds Cl− both in solution (DMSO 0.5% H2O and MeCN) and in the solid state, and allows to selectively detect Cu2+ in MeCN with the formation of a 2:1 metal-receptor complex, with a green intense emission appreciable by naked eye under the UV lamp. The H2L copper complex preserves its emission properties in the presence of Cl−. The addition of basic anions (OH−, CN−, and F−) up to 10 equivalents caused the deprotonation of the squaramide NHs and a dramatic change of the emission properties of the H2L copper complex.

Benzothiazole–pyrimidine-based BODIPY analogues: promising luminophores with fluorescence sensing and imaging ability and asymmetrization-induced solid-state emission

2016 ◽  
Vol 45 (43) ◽  
pp. 17274-17280 ◽  
Author(s):  
Xiaoqing Wang ◽  
Qingsong Liu ◽  
Fen Qi ◽  
Lin Li ◽  
Hai-Dong Yu ◽  
...  
Keyword(s):  
Solid State ◽  
Fluorescence Sensing ◽  
Intense Emission ◽  
Boron Difluoride

A series of boron difluoride dyes were demonstrated to possess intense emission both in solution and solid-state. Their fluorogenic sensing and imaging abilities were also investigated.

Efficiently luminescent mononuclear copper iodide complexes with sterically hindered iminephosphine chelating ligands

2021 ◽  
Author(s):  
Bin Zhang ◽  
Jie Zhang ◽  
Ahui Sun ◽  
Chunmei Liu ◽  
Mengsi Gu ◽  
...  
Keyword(s):  
Solid State ◽  
Chelating Ligands ◽  
Copper Iodide ◽  
Intense Emission ◽  
Sterically Hindered ◽  
Uv Excitation

Phosphorescent four-coordinate Cu(I) complexes (1-3) of type [CuI(PPh3)(N^P)], N^P = 4-(diphenylphosphanyl)-1,2-diphenylbenzimidazole derivatives, have been synthesized and characterized. Under UV excitation, the titled complexes in the solid-state exhibit intense emission with...

Solid-state emission enhancement in vaulted trans-bis(salicylaldiminato)platinum(ii) crystals with halogen functionality

2014 ◽  
Vol 43 (26) ◽  
pp. 10074-10085 ◽  
Author(s):  
Naruyoshi Komiya ◽  
Minoru Okada ◽  
Kanako Fukumoto ◽  
Shotaro Iwata ◽  
Takeshi Naota
Keyword(s):  
Solid State ◽  
Heat Resistance ◽  
Structural Dependence ◽  
Emission Enhancement ◽  
Lower Heat ◽  
Intense Emission ◽  
Complex Crystals

Chloro-substitution significantly increases the lower heat resistance of short-vaulted, non-substituted trans-bis(salicylaldiminato)Pt(ii) complex crystals, and maintains the intense emission of long-vaulted analogues, which leads to intense solid-state emission with low structural dependence.

A quinacridone derivative with intensive emission in both solution and the solid state via a facile preparation for cell imaging applications

2019 ◽  
Vol 7 (20) ◽  
pp. 3192-3196 ◽  
Author(s):  
Guoqing Tian ◽  
Wenli Wang ◽  
Baojing Huang ◽  
Lei Shi ◽  
Lu Li ◽  
...  
Keyword(s):  
Solid State ◽  
Chemical Reaction ◽  
Cell Imaging ◽  
Simple Chemical ◽  
One Step ◽  
Facile Preparation ◽  
Intense Emission

tert-Butyloxycarbonyl (TBOC) substituted quinacridone (QA) derivative TBOC-QA was synthesized via a one-step simple chemical reaction and showed intense emission in both solution and the solid state.

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

The Collagenic Molecular Structural Unit of Solid State Complexes

1971 ◽  
Vol 29 ◽  
pp. 478-479
Author(s):  
Kenneth M. Richter ◽  
John A. Schilling
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Structural Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naoh Treatment

The structural unit of solid state collagen complexes has been reported by Porter and Vanamee via EM and by Cowan, North and Randall via x-ray diffraction to be an ellipsoidal unit of 210-270 A. length by 50-100 A. diameter. It subsequently was independently demonstrated by us in dog tendon, dermis, and induced complexes. Its detailed morphologic, dimensional and molecular weight (MW) aspects have now been determined. It is pear-shaped in long profile with m diameters of 57 and 108 A. and m length of 263 A. (Fig. 1, tendon, KMnO4 fixation, Na-tungstate; Fig. 2a, schematic of unit in long, C, and x-sectional profiles of its thin, xB, and bulbous, xA portions; Fig. 2b, tendon essentially unmodified by ether and 0.4 N NaOH treatment, Na-tungstate). The unit consists of a uniquely coild cable, c, of ṁ 22.9 A. diameter and length of 2580-3316 A. The cable consists of three 2nd-strands, s, each of m 10.6 A.

Structure-property relations of liquid crystalline polymers

1987 ◽  
Vol 45 ◽  
pp. 460-463
Author(s):  
Linda C. Sawyer
Keyword(s):  
Solid State ◽  
Liquid Crystalline ◽  
Structural Model ◽  
Crystalline Polymer ◽  
Liquid Crystalline Polymers ◽  
Mechanical Anisotropy ◽  
Structure Property ◽  
Preparation Methods ◽  
Crystalline Polymers ◽  
Extended Chain

Recent liquid crystalline polymer (LCP) research has sought to define structure-property relationships of these complex new materials. The two major types of LCPs, thermotropic and lyotropic LCPs, both exhibit effects of process history on the microstructure frozen into the solid state. The high mechanical anisotropy of the molecules favors formation of complex structures. Microscopy has been used to develop an understanding of these microstructures and to describe them in a fundamental structural model. Preparation methods used include microtomy, etching, fracture and sonication for study by optical and electron microscopy techniques, which have been described for polymers. The model accounts for the macrostructures and microstructures observed in highly oriented fibers and films.Rod-like liquid crystalline polymers produce oriented materials because they have extended chain structures in the solid state. These polymers have found application as high modulus fibers and films with unique properties due to the formation of ordered solutions (lyotropic) or melts (thermotropic) which transform easily into highly oriented, extended chain structures in the solid state.

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