Results 31 to 40 of about 175,207 (387)
Anthracene‐Porphyrin Nanoribbons
Angewandte Chemie International Edition, 2023 Abstractπ‐Conjugated nanoribbons attract interest because of their unusual electronic structures and charge‐transport behavior. Here, we report the synthesis of a series of fully edge‐fused porphyrin‐anthracene oligomeric ribbons (dimer and trimer), together with a computational study of the corresponding infinite polymer.
Zhu, H +4 more
openaire +4 more sources
Interlocked Porphyrin Switches [PDF]
Chemistry – A European Journal, 2013 AbstractWe describe the synthesis of a series of interlocked structures from porphyrin–glycoluril cage compounds and bis(olefin)‐terminated viologens by an olefin‐metathesis protocol. The length of the chain connecting the olefin substituents with the viologen has a marked effect on the products of the ring‐closure reaction.
Coumans, R.G.E. +5 more
openaire +6 more sources
Inverted porphyrins and expanded porphyrins: An overview [PDF]
Journal of Chemical Sciences, 2002 Porphyrins and metallopophyrins have attracted the attention of chemists for the past 100 years or more owing to their widespread involvement in biology. More recently, synthetic porphyrins and porphyrin-like macrocycles have attracted the attention of researchers due to their diverse applications as sensitizers for photodynamic therapy, MRI ...
Simi K. Pushpan +5 more
openaire +2 more sources
Synthesis and Photostability of Cyclooctatetraene-Substituted Free Base Porphyrins
Chemistry, 2021 A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained and characterized by spectral and photophysical studies. Three COT-free porphyrins served as
Joanna Buczyńska +6 more
doaj +1 more source
Metalloporphyrins inactivate caspase-3 and -8 [PDF]
, 2005 Activation of caspases represents one of the earliest biochemical indicators for apoptotic cell death. Therefore, measurement of caspase activity is a widely used and generally accepted method to determine apoptosis in a wide range of in vivo and in ...
Blumenthal, Signe B. +8 more
core +1 more source
AGROBACTERIUM TUMEFACIENS FA2 SENSITIVITY ТО THE SYNTHETIC PORPHYRINS ACTION
Mìkrobìologìâ ì Bìotehnologìâ, 2007 Dark and photoinduced action of new synthetic porphyrins with different molecular charges has been studied towards plant bacterial cancer agent Agrobacterium tumefaciens.
Н. С. Водзінська +5 more
doaj +1 more source
Peripherally-metallated porphyrins: meso-n1-porphyrinyl-platinum(II) complexes of 5,15-diaryl- and 5,10,15-triarylporphyrins [PDF]
, 2002 Attempted metathesis reactions of peripherally-metallated meso-η1-porphyrinylplatinum(II) complexes such as trans-[PtBr(NiDPP)(PPh3)2] (H2DPP = 5,15-diphenylporphyrin) with organolithium reagents fail due to competitive addition at the porphyrin ring ...
Arnold, Dennis +2 more
core +2 more sources
Journal of Pharmaceutical Analysis, 2021 Coronavirus disease 2019 is a serious disease that causes acute respiratory syndrome and negatively affects the central nervous system. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) crosses the blood-brain barrier due to the spike (S ...
Yury A. Gubarev +5 more
doaj
Preliminary study of metalloporphyrins in some oil shales, red sea, Egypt
Egyptian Journal of Petroleum, 2017 Occurence and distribution of metalloporphyrins were studied in asphaltene and maltene fractions of some Egyptian oil shales from the main producing mines (Abu-Shegeili, El-Beida, El-Nakheil and Abu-Tundub I, II) in red sea area (Fig.
S.M. El-Sabagh +3 more
doaj +1 more source
Reactions of HNO with Metal Porphyrins: Underscoring the Biological Relevance of HNO [PDF]
, 2014 Azanone (1 HNO, nitroxyl) shows interesting yet poorly understood chemical and biological effects. HNO has some overlapping properties with nitric oxide (NO), sharing its biological reactivity toward heme proteins, thiols, and oxygen.
Bikiel, Damian Ezequiel +4 more
core +1 more source