Sensitized fluorescence of aromatic hydrocarbons in solution. Spectrophotometric estimation of energy transfer coefficients at high and low optical densities

1966 ◽  
Vol 62 ◽  
pp. 1525 ◽  
Author(s):  
B. Stevens ◽  
J. T. Dubois
Keyword(s):  
Energy Transfer ◽  
Aromatic Hydrocarbons ◽  
Transfer Coefficients ◽  
Sensitized Fluorescence

9,10-Dinaphthylphenanthrene: Synthese, Rotationsisomerie und Photocyclisierung zu polycyclischen aromatischen Kohlenwasserstoffen9,10-Dinaphthylphenanthrenes: Synthesis, Rotational Isomers and Photocyclization to Polycyclic Aromatic Hydrocarbons

1992 ◽  
Vol 47 (12) ◽  
pp. 1764-1774 ◽  
Author(s):  
Karl-Dietrich Gundermann ◽  
Elke Romahn ◽  
Maximilian Zander
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Energy Transfer ◽  
Nmr Spectroscopy ◽  
Aromatic Hydrocarbons ◽  
Trans Isomers ◽  
Preparative Scale ◽  
Rotational Isomers ◽  
Polycyclic Aromatic

9,10-Di(1-naphthyl)phenanthrene (5 a) and 9,10-di(2-naphthyl)phenanthrene (5 b) have been synthesized. It is shown that 5 a and 5b both form two stable rotational (cis/trans) isomers with the naphthalene molecular planes perpendicular to the phenanthrene plane. In the case of 5 a the mixture of the two isomers has been separated in a preparative scale and each isomer characterized by e. g., NMR spectroscopy. Photocyclization of 5a leads to benzo[e]phenanthro[1,2,3,4-ghi]perylene (9) while 5 b yields phenanthro[9,10-i]pentahelicene (14); both hydrocarbons have not been previously described in the literature. The observed selectivities of photocyclization are explained on the basis of the structures and stabilities of the initially formed photoproducts (dihydro structures 15 and 14 a). The role of intramolecular non-radiative singlet-singlet energy transfer (naphthalene → phenanthrene) as competing with photocyclization is discussed in detail.

scholarly journals Comparison in determination of mass-energy transfer coefficients

2018 ◽  
Vol 1044 ◽  
pp. 012015
Author(s):  
G J Teixeira ◽  
C H Souza ◽  
R S Cardoso ◽  
J G P Peixoto
Keyword(s):  
Energy Transfer ◽  
Mass Energy ◽  
Transfer Coefficients

Luminescent metal–organic frameworks encapsulating polycyclic aromatic hydrocarbons for energy transfer

2020 ◽  
Vol 49 (16) ◽  
pp. 5087-5091 ◽  
Author(s):  
Han Wu ◽  
Mengting Li ◽  
Chunyi Sun ◽  
Xinlong Wang ◽  
Zhongmin Su
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Energy Transfer ◽  
Electron Donor ◽  
Aromatic Hydrocarbons ◽  
Metal Organic Frameworks ◽  
Host Matrix ◽  
Polycyclic Aromatic ◽  
Metal Organic

A novel MOF with a kaleidoscopic topology as an ideal host matrix that exhibits luminescence energy transfer and quenching behaviour in the presence of a photocatalytic sacrificial electron donor.

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