OPEN IN READ APP
JOURNAL ARTICLE

Investigation of pseudoisocyanine aggregates formed on polystyrenesulfonate

Claire Peyratout, Edwin Donath, Lars Daehne
Photochemical & Photobiological Sciences 2002, 1 (2): 87-91
12659122
The interaction of 1,1'-diethyl-2,2'-cyanine (PIC), a non-fluorescent cationic dye known to form emissive J-aggregates in aqueous solutions, with the polyelectrolyte poly(styrenesulfonate) (PSS) is investigated by absorption and fluorescence spectroscopy. Depending on the amount of polyelectrolyte added, three regimes are identified. At a large excess of PIC, there is an equilibrium between the PIC monomer and a non-fluorescent PIC aggregate characterized by a strong absorption band centered at 565 nm. As the amount of PSS increases, we observe the growth of the PIC J-aggregate onto the PSS backbone, characterized by a sharp absorption band at 572 nm and a narrow emission at 577 nm. At a large excess of PSS, the major species consists of PIC molecules adsorbed independently along the polyelectrolyte chains.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Trending Papers

Available on the App Store

Available on the Play Store
Remove bar
Read by QxMD icon Read
12659122
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"