18781-53-8Relevant academic research and scientific papers
NOVEL CYANINE COMPOUND AND NEAR-INFRARED CUT FILTER COMPRISING THE COMPOUND
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, (2018/09/19)
PROBLEM TO BE SOLVED: To provide a cyanine compound that is a novel near-infrared absorbing dye, and a thermosetting resin composition prepared with the compound, and a near-infrared cut filter for imaging elements such as CCD and CMOS, prepared therewith and having excellent heat resistance. SOLUTION: The problem can be solved by a cyanine compound that is a novel near-infrared absorbing dye having excellent heat resistance, and a near-infrared cut filter prepared with a thermosetting resin composition comprising an epoxy resin as a thermosetting resin. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
Photoreversible Zn2+ ion transportation across an interface using ion-chelating substituted photochromic 3,3′-indolospirobenzopyrans: Steric and electronic controlling effects
Roxburgh, Craig J.,Sammes, Peter G.,Abdullah, Ayse
experimental part, p. 4951 - 4960 (2009/04/13)
The photoreversible transportation of Zn2+ ions across an interface using photochromic substituted-spirobenzopyrans has been demonstrated. The inclusion of strategically placed sterically influencing 3′-methyl-3b and 3-spirocyclohexyl-3c groupings is investigated and compared to the unsubstituted analogue 3a. Significant control over the spiropyran ringopening? closing reaction, and hence Zn2+ ion transportation has been realised. Additionally, the spiropyran ring-opening? closing reactions of two skeletally identical spirobenzo pyrans 4 and 5, but possessing "electronically-modifying" 5-trifluoromethyl-substitutents have been studied by 1H NMR spectroscopy: this has enabled us to realise the additional biasing, on the ring-opening?closing process, excerpted on these systems through both selectively placed, inductively controlling functional-group substitution and/or, simultaneously, sterically influencing group substitution. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
Structures of Lithium Salts of 2,3,3-Trimethylindolenine and Its 5-Methoxy Derivative in Solution and the Solid State
Jackman, L. M.,Scarmoutzos, L. M.,Smith, B. D.,Williard, Paul G.
, p. 6058 - 6063 (2007/10/02)
An X-ray crystal structure of lithium 2,3,3-trimethylindolenide etherate shows it to be a disolvated dimer having a η3-azaallyl-type structure.The structures of the salt in several solvents have been established by studies of 13C chemical shifts, 6Li, 15N spin-spin splitting, 7Li quadrupole splitting constants, and apparent degrees of aggregation determined by vapor pressure barometry.It is the η3-azaallyl dimer disolvate in diethyl ether, a tetrasolvated dimer in dioxolane, a mixture of monomer splitting constants of 230, 156, 180 - 190 (0.27 - 0.75 M), and 217 kHz, respectively.In diethyl ether with 4 equiv of hexamethylphosphoric triamide, the salt is a mixture of monomeric and triple ion species.Lithium 5-methoxy-2,3,3-trimethylindolenide forms similar species except that, in tetrahydrofuran, the tendency for dimer formation is enhanced, which leads to a higher proportion of C- to N-methylation in its reaction with methyl chloride in that solvent.
