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Crystallochromy

WebCrystallochromy as a solid-state effect: correlation of molecular conformation, crystal packing and colour in perylene-3,4:9,10-bis (dicarboximide) pigments. G. Klebe, F. … WebMay 17, 2010 · The isopropyl derivative exhibited the highest fluorescence quantum yield in the solid state of 0.90 in the series of alkylated tetracenes. X-ray analysis revealed that there were significant structural differences in alkyl conformation and crystal packing. The crystallochromy effects are derived from the unique crystal-packing patterns.

Crystallochromy of perylene pigments: Interference between …

WebCrystallochromy of perylene pigments: Interference between Frenkel excitons and charge-transfer states Gisslén, Linus ; Scholz, Reinhard The optical properties of … WebMay 17, 2010 · The photophysical properties exhibit crystallochromy ranging from yellow to red and different fluorescence quantum yields depending on the length of the alkyl side chain. The isopropyl derivative achieved the highest quantum yield ever reported among tetracenes. Details are discussed in the article by C. Kitamura et al. on p. 3033 ff. ios photo booth app https://aweb2see.com

Phys. Rev. B 80, 115309 (2009) - Crystallochromy of …

WebOct 1, 1994 · A Theoretical Study of Crystallochromy. Quantum Interference Effects in the Spectra of Perylene Pigments Journal of the American Chemical Society … WebSep 10, 2009 · Based on the crystal structure determined by x-ray diffraction, density-functional theory (DFT) and Hartree-Fock are used for the calculation of the electronic … WebSep 1, 2009 · Crystallochromy of perylene pigments: Interference between Frenkel excitons and charge-transfer states Authors: Linus Gisslén R. Scholz Technische … on time express ontario ca

Alkyl-Engineered Dual-State Luminogens with …

Category:A Theoretical Study of Crystallochromy. Quantum …

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Crystallochromy

Perylene and perinone pigments — Heriot-Watt Research Portal

WebApr 6, 2024 · Perylene bisimide dyes are high-performance pigments that have red, maroon or black colors, but with typically only weak fluorescence in the solid state. Here, the authors report a series of π ...

Crystallochromy

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WebJul 13, 2012 · Tuning the Solid‐State Optical Properties of Tetracene Derivatives by Modification of the Alkyl Side‐Chains: Crystallochromy and the Highest Fluorescence Quantum Yield in Acenes Larger than Anthracene. Chitoshi Kitamura. E-mail address: [email protected]‐hyogo.ac.jp. WebThe meaning of LITHOCHROMY is the art of painting on stone. Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one …

WebJun 21, 2011 · Tetracene octaesters, which were prepared by twofold [2+2+2] cocyclization, were isolated as red, orange, and orange-yellow solids for the methyl, ethyl, and propyl ester derivatives, respectively. X-Ray crystallographic analysis reveals that the difference in solid-state color arises owing to diffe … WebCrystallochromy of perylene pigments: Interference between Frenkel excitons and charge-transfer states Linus Gisslén* and Reinhard Scholz† Physik Department und Walter Schottky Institut, Technische Universität München, Am Coulombwall 3, …

WebJan 18, 2010 · We synthesized a series of 1,4,7,10-tetraalkyltetracenes using a new 2,6-naphthodiyne precursor and 2,5-dialkylfurans as starting materials (alkyl=methyl to hexyl). Surprisingly, the solid-state... WebActa Crystallographica B is the forum for the publication of such contributions. Scientific developments based on experimental studies as well as those based on theoretical …

WebTetracene octaesters, which were prepared by twofold [2+2+2] cocyclization, were isolated as red, orange, and orange-yellow solids for the methyl, ethyl, and propyl ester …

WebSynthetically, they are derived from perylene-1,4,5,8-tetracarboxylic acid. The perylenes tend to be quite expensive pigments, but their high levels of fastness properties mean that they are suitable for highly demanding applications. In particular, they offer very high heat stability. Two perinone pigments are used commercially. on time express ltdWebAlkyl-Engineered Dual-State Luminogens with Pronounced Odd–Even Effects: Quantum Yields with up to 48% Difference and Crystallochromy with up to 22 nm Difference Author: Yuanye Yin, Aixiang Ding, Felicia He, Chengyuan Wang, Lin Kong, Jiaxiang Yang Source: Journal of physical chemistry 2024 v.126 no.15pp. 2921-2929 ISSN: 1520-5207 Subject: ontime express indonesiaWebJan 4, 2011 · ChemInform Abstract: Octaalkyl Tetracene‐1,2,3,4,7,8,9,10‐octacarboxylates: Synthesis by Twofold [2 + 2 + 2] Cocyclization and Crystallochromy. on time express limited – shanghaiWebApr 18, 2011 · As demonstrated in a recent model study of several perylene pigments crystallizing in the monoclinic space group P 21/c, the optical properties in the … ios phone touchscreen not workingWebMar 3, 2024 · In the case of chromoly welding, there is no need to preheat the metal if it is less than 0.12 inches thick. If the tubing is thicker, you need to preheat the chromoly … ios physicsWebJan 14, 2010 · The effects of molecular structure, crystal packing, and exciton coupling on the color were investigated. Abstract We synthesized a series of 1,4,7,10 … ios photo to spreadsheet software windows 10WebOctaalkyl tetracene-1,2,3,4,7,8,9,10-octacarboxylates: synthesis by twofold [2+2+2] cocyclization and crystallochromy - Chemical Communications (RSC Publishing) Maintenance work is planned for Wednesday 5th April 2024 from 09:00 to 10:30 (BST). ios physical therapy protocol