1263-63-4Relevant articles and documents
Development of the sensitizer for generating higher-energy photons under diluted condition via the triplet-triplet annihilation-supported upconversion
Tanaka, Kazuo,Ohashi, Wataru,Inafuku, Kenichi,Shiotsu, Shohei,Chujo, Yoshiki
, (2020)
It was previously reported that photon upconversion can occur in the solution containing anthracene and the Pt complex of octaethylporphyrin (PtOEP) via the triplet-triplet annihilation process. In this study, by employing the modified Pt complex of the dual anthracene-tethered porphyrin, DA-PtP as a sensitizer, it is demonstrated that shorter-wavelength light can be generated under diluted condition. We synthesized DA-PtP and compared upconversion properties by changing the type of sensitizers. Accordingly, it was shown that the photon upconversion proceeded with the xenon lamp (540 nm) in the presence of DA-PtP. Furthermore, it was found that the emission band in the shorter wavelength light in the near UV region was observed from the solution containing DA-PtP even under diluted condition. From the mechanistic investigation, it was proposed that the anthracene moieties in DA-PtP might inhibit to form agglomeration with the free anthracene. As a result, reabsorption of the higher-energy light generated from upconversion could be suppressed.
A simple, catalytic H2-hydrogenation method for the synthesis of fine chemicals; hydrogenation of protoporphyrin IX dimethyl ester
Rebou?as, Júlio S.,James, Brian R.
, p. 5119 - 5122 (2006)
A conceptually simple H2-hydrogenation protocol is introduced for the high-yield preparation of a natural product derivative. Protoporphyrin IX dimethyl ester is hydrogenated to the mesoporphyrin analogue in N,N-dimethylacetamide under H2 (1 atm) at 80 °C within 30 min. The reaction is catalyzed by commercial RuCl3, without the need for the use of phosphine- and/or carbene-based ligands.
A convenient hydrogenation method for the synthesis of metallo- mesoporphyrin IX dimethyl esters via self-catalyzed CoCl2-NaBh 4 reagent system
Xu, Shichao,Hu, Bingcheng,Hu, Tianjing,Wang, Huan,Huang, Xiuyou,Lou, Xingkun,Liu, Zuliang
, p. 2461 - 2465 (2012)
A convenient protocol has been developed for the hydrogenation of metallo-protoporphyrin IX dimethyl esters (MPPDMEs) to their mesoporphyrin analogues using CoCl2-NaBH4 reagent system. Metallo-porphyrin complexes were found to perform as self-catalysts in this procedure. This method provides several advantages such as safe and simple procedure, short reaction time, high yields and low cost. Copyright
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Nichol
, p. 903,908 (1970)
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The Preparation of Analogues of the Ether-Linked Dimer and Oligomer Components of Hematoporphyrin Derivative
Byrne, Christopher J.,Ward, David A.
, p. 411 - 426 (2007/10/02)
The preparation of ether-linked porphyrin dimers and oligomers which are analogues of those present in the anticancer drugs hematoporphyrin derivative and Photofrin IIR is described.These materials are prepared from the appropriately substituted porphyrins containing a 1-hydroxyethyl or a vinyl side chain through an intermediate 1-bromoethyl derivative.Ether-linked porphyrin dimers with ethyl, formyl, hydroxymethyl and 1-alkoxyethyl side chains were prepared, together with trimers and tetramers containing ethyl side chains.Some of the spectroscopic and biological properties of these compounds are discussed.