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Volumn 120, Issue 36, 1998, Pages 9188-9204

Stilbenoid dimers: Dissection of a paracyclophane chromophore

Author keywords

[No Author keywords available]

Indexed keywords

4 [4 (4 TERT BUTYLSTYRYL)STYRYL][2.2]PARACYCLOPHANE; 4 BROMO[2.2]PARACYCLOPHANE; 4 STYRYL[2.2]PARACYCLOPHANE; 4 VINYL[2.2]PARACYCLOPHANE; DIMER; MONOMER; PARACYCLOPHANE DERIVATIVE; PSEUDO 2 BIS[4 (4 TERT BUTYLSTYRYL)STYRYL][2.2]PARACYCLOPHANE; PSEUDO 2 DIBROMO[2.2]PARACYCLOPHANE; PSEUDO 4 BIS(4 CARBOXALDEHYDE STYRYL)[2.2]PARACYCLOPHANE; PSEUDO 4 BIS(4 VINYL STYRYL)[2.2]PARACYCLOPHANE; PSEUDO 4 BIS[4 (4 TERT BUTYLSTYRYL)STYRYL][2.2]PARACYCLOPHANE; PSEUDO 4 DIBROMO[2.2]PARACYCLOPHANE; STILBENE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 0032537957     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja973816h     Document Type: Article
Times cited : (214)

References (88)
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    • The geometries were experimentally measured for molecules 1a and 1b; the geometries of Pc and 1c were extracted from 1a X-ray data; the geometries of 2a, 2b, and 2c were assembled from 1a and 1b X-ray data by elongating the stilbene units
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    • In the Experimental Section measurements 1c and 2c are substituted at positions 2 and 5 by methyl groups; 2c is substituted at position 22 by tert-butyl group; 2a and 2b are substituted at 1 and 48 by tert-butyl groups
    • In the Experimental Section measurements 1c and 2c are substituted at positions 2 and 5 by methyl groups; 2c is substituted at position 22 by tert-butyl group; 2a and 2b are substituted at 1 and 48 by tert-butyl groups.
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    • Experimentally this transition is weakly vibronically allowed by borrowing intensity from IB (ref 45). It can be seen by plotting the experimental absorption in logarithmic scale. The fluorescence of Pc originates primarily from IA (ref 45).
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    • The term "Davydov splitting" usually refers to the splitting of degenerate states in molecular aggregates and crystals in which intermolecular interactions are electrostatic, and are described by the Frenkel exciton Hamiltonian. In contrast, the coupling between electronic modes in dimers includes electrostatic as well as exchange interactions, which result in interchromophore electronic coherence. These may not be described by Frenkel exciton Hamiltonian.
    • The term "Davydov splitting" usually refers to the splitting of degenerate states in molecular aggregates and crystals in which intermolecular interactions are electrostatic, and are described by the Frenkel exciton Hamiltonian. In contrast, the coupling between electronic modes in dimers includes electrostatic as well as exchange interactions, which result in interchromophore electronic coherence. These may not be described by Frenkel exciton Hamiltonian.
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    • A detailed fluorescence decay analysis for a family of paracyclophane structures will be the basis of a future publication. Heinrich, J.; Atherton, S.; Bazan, G. C. Unpublished work
    • A detailed fluorescence decay analysis for a family of paracyclophane structures will be the basis of a future publication. Heinrich, J.; Atherton, S.; Bazan, G. C. Unpublished work.
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    • Here we use the term "energy migration" but it could be argued that the term "internal conversion" is adequate as well
    • Here we use the term "energy migration" but it could be argued that the term "internal conversion" is adequate as well.
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