1227674-35-2Relevant academic research and scientific papers
NARROW ABSORPTION POLYMER NANOPARTICLES AND RELATED METHODS
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, (2020/04/25)
Polymers, monomers, narrow-band absorbing polymers, narrow-band absorbing monomers, absorbing units, polymer dots, and related methods are provided. Bright, luminescent polymer nanoparticles with narrow-band absorptions are provided. Methods for synthesizing absorbing monomers, methods for synthesizing the polymers, preparation methods for forming the polymer nanoparticles, and applications for using the polymer nanoparticles are also provided.
A d3h-symmetric macrocycle alternatingly composed of pyridine and benzyl alcohol units linked with acetylene bonds
Abe, Hajime,Yumoto, Ryuta,Inouye, Masahiko
, p. 580 - 592 (2017/04/10)
A macrocyclic compound alternatingly composed of three pyridine and three benzyl alcohol units linked with acetylene bonds was developed as a new type of D3h-symmetric hexagonal shape-persistent macrocycles with a host function. The macrocycle was prepare
Triplet diphenylcarbene protected by iodine and bromine groups
Hirai, Katsuyuki,Bessho, Kana,Kitagawa, Toshikazu,Tomioka, Hideo
, p. 347 - 356 (2011/07/30)
Diphenyldiazomethane having two iodine and two bromine groups at the ortho positions, (2, 6-dibromo-4-tertbutylphenyl) (2, 6-diiodo-4-tert-butylphenyl) diazomethane (1a-N2), has been synthesized. Triplet diphenylcarbene3 1a is generated from the precursor and is characterized by UV-Vis spectroscopy at low temperature and laser flash photolysis (LFP) techniques at room temperature. Irradiation of 1a-N2 in a 2-methyltetrahydrofuran (2-MTHF) matrix at 77 K gives the UV-Vis spectrum of 31a, but ESR signals that can be assigned to a triplet species are not detected. The LFP of 1a-N2 in a degassed benzene solution produces the transient absorption ascribable to 31a at 351 nm, which decays in a second-order process with a rate constant of 0.17 sS1. The first half-life of 31a is estimated to be 24 s. Triplet carbene 31a is trapped by oxygen to generate benzophenone oxide 1a-O, with maximum absorbance at 415 nm, with a rate constant of 7.3T106MS 1sS1, and also by 1, 4-cyclohexadiene (CHD) to produce the diphenylmethyl radical (1a-H2, lmax 1/4 380 nm) with a rate constant of 39MS1sS1. The carbene is also trapped by methanol with a rate constant of 0.30MS2sS1. Steady-state irradiation of 1a-N2 in degassed benzene affords only a small amount of the phenanthrene 2a as an assignable product. Copyright 2010 John Wiley & Sons, Ltd.
