Tautomerism in porphycenes: analysis of rate-affecting factors
Double hydrogen transfer occurring in both ground and the lowest electronically excited
singlet states was studied for a series of 19 differently substituted porphycenes. The rates of …
singlet states was studied for a series of 19 differently substituted porphycenes. The rates of …
Dual Emission of a Free‐Base 5‐Oxaporphyrinium Cation from its cis‐ and trans‐NH Tautomers
Replacement of the meso methine carbon atoms of porphyrins with heteroatoms is a
powerful strategy for tuning their optical and electronic properties. In particular, 5 …
powerful strategy for tuning their optical and electronic properties. In particular, 5 …
Gram-scale synthesis of porphycenes through acid-catalyzed oxidative macrocyclizations of E/Z-mixed 5, 6-diaryldipyrroethenes
The gram-scale production of porphycene derivatives is reported. This has been achieved
by acid-catalyzed ring closure of an E/Z-mixture of 5, 6-diaryldipyrroethenes, resulting in the …
by acid-catalyzed ring closure of an E/Z-mixture of 5, 6-diaryldipyrroethenes, resulting in the …
A novel fluoro-chromogenic click reaction for the labelling of proteins and nanoparticles with near-IR theranostic agents
Reaction of porphycene isothiocyanates with primary and secondary amines leads to the
formation of thiazolo [4, 5-c] porphycenes, with a substantial shift in the absorption and …
formation of thiazolo [4, 5-c] porphycenes, with a substantial shift in the absorption and …
Spectroscopic investigation of photophysics and tautomerism of amino-and nitroporphycenes
Parent, unsubstituted porphycene and its two derivatives: 2, 7, 12, 17-tetra-n-
propylporphycene and 2, 7, 12, 17-tetra-t-butylporphycene were substituted at the meso …
propylporphycene and 2, 7, 12, 17-tetra-t-butylporphycene were substituted at the meso …
Spectroscopic and microscopic investigations of tautomerization in porphycenes: condensed phases, supersonic jets, and single molecule studies
We describe various experimental approaches that have been used to obtain a detailed
understanding of double hydrogen transfer in porphycene, a model system for …
understanding of double hydrogen transfer in porphycene, a model system for …
Rational synthesis of 5, 10-diazaporphyrins via nucleophilic substitution reactions of α, α′-dibromotripyrrin and dihydrogenation to give 5, 10-diazachlorins
M Umetani, G Kim, T Tanaka, D Kim… - The Journal of Organic …, 2020 - ACS Publications
We report here the first rational synthesis of 5, 10-diazaporphyrins via nucleophilic
substitution reactions of α, α′-dibromotripyrrin. Uses of 1, 3-diiminoisoindoline and 3, 4-di …
substitution reactions of α, α′-dibromotripyrrin. Uses of 1, 3-diiminoisoindoline and 3, 4-di …
Chromatographically separable ruffled non-planar isomeric octaalkylporphycenes: consequences of unsymmetrical substitution upon structure and photophysical …
We herein report the first synthesis of two unsymmetrically substituted novel porphycenes, ie
2, 7, 12, 13-tetraethyl-9, 10, 19, 20-tetramethyl (OAPo-T) and 2, 3, 16, 17-tetraethyl-9, 10, 19 …
2, 7, 12, 13-tetraethyl-9, 10, 19, 20-tetramethyl (OAPo-T) and 2, 3, 16, 17-tetraethyl-9, 10, 19 …
2 + 2 Can Make Nearly a Thousand! Comparison of Di- and Tetra-Meso-Alkyl-Substituted Porphycenes
Two porphycenes, substituted at the meso positions with two and four methyl groups,
respectively, reveal similar absorption spectra, but their photophysical properties are …
respectively, reveal similar absorption spectra, but their photophysical properties are …
Spectroscopic study of jet-cooled deuterated porphycenes: unusual isotopic effects on proton tunneling
ET Mengesha, A Zehnacker-Rentien… - The Journal of …, 2015 - ACS Publications
Porphycene (Pc) is a well-known model for studying double hydrogen transfer, which shows
vibrational-mode-specific tunneling splitting when isolated in supersonic jets or helium …
vibrational-mode-specific tunneling splitting when isolated in supersonic jets or helium …