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281211-15-2

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281211-15-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 281211-15-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,2,1 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 281211-15:
(8*2)+(7*8)+(6*1)+(5*2)+(4*1)+(3*1)+(2*1)+(1*5)=102
102 % 10 = 2
So 281211-15-2 is a valid CAS Registry Number.

281211-15-2Downstream Products

281211-15-2Relevant articles and documents

Porphyrin-Hexaphenylbenzene Conjugates via Mixed Cyclotrimerization Reactions

Martin, Max M.,Dill, Maximilian,Langer, Jens,Jux, Norbert

, p. 1489 - 1499 (2019)

Mixed cyclotrimerization reactions of diarylacetylenes (tolans) were applied to generate a library of multiple porphyrin-hexaphenylbenzene (HPB) architectures. Successful reactions, which could be influenced by the ratio of tolan starting materials, were

Porphyrin-rylene-diimide-hexabenzocoronene triads

Martin, Max M.,Dusold, Carolin,Hirsch, Andreas,Jux, Norbert

, p. 268 - 277 (2020)

Hexa-peri-hexabenzocoronenes (HBCs), substituted by two different chromophores in an ortho arrangement, were synthesized for the first time and investigated towards their photophysical properties. Rylene-diimide dyes, in particular naphthalene-diimides (NDIs) and perylene-diimides (PDIs), were attached to the HBC as the first, and porphyrins as the second chromophore. Therefore, porphyrin-NDI-HPB as well as porphyrin-PDI-HPB precursors were accessed and converted into the respective HBC derivatives applying oxidative Scholl conditions. UV-vis absorption and fluorescence emission spectroscopy showed interesting photophysical behavior such as energy transfer processes. Particularly, the porphyrin-PDI-HBC displays pronounced absorption features between 330-650 nm, which cover a wide range of the visible spectrum.

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