Effect of macromolecular isomerism on the photomodulation of dendrimer properties [16]

Journal of the American Chemical Society

Volumn 122, Issue 28, 2000, Pages 6795-6796

  Li, Sheng ^a   McGrath, Dominic V ^a  

^a University of Arizona   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DENDRIMER;

CHEMICAL STRUCTURE; ISOMERISM; LETTER; PHOTOCHEMISTRY; STRUCTURE ACTIVITY RELATION; SYNTHESIS;

EID: 0034686697     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0015085     Document Type: Letter

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42. 1H NMR, we did not observe individually resolved peaks in the GPC of equilibrium mixtures after different irradiation times. However, a reproducible limiting elution volume (±0.02 mL) was always observed for both dark incubated and extensively irradiated samples. Based on a photostationary state ratio of 1:9 E/Z for these experimental conditions, the isomer ratio for 1-5 after extended irradiation was approximately <0.1: 3:24:72 EEE/EEZ/EZZ/ZZZ and the reverse for a dark incubated sample.