Neocyanine

There is a type of chlorophyll that is actually near IR sensitive. It was found in some algae species recently I think. IIRC it was Chlorophyll F.

Ah, here it is here -
http://en.wikipedia.org/wiki/Chlorophyll_f

Photo Engineer said:

Generically, phthalocyanines are sensitizing dyes, but their effectiveness just as with other dyes must be determined by some means such as actually doing the experiment.

PE

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Thanks Ron. It's been a few days since I checked this thread. I figured some experimentation would be required. It's been a little crazy here with the holidays.

Not sure where one could easily source chlorophyll F.

Photo Engineer said:

Generically, phthalocyanines are sensitizing dyes, but their effectiveness just as with other dyes must be determined by some means such as actually doing the experiment.

Click to expand...

This is interesting. Without checking I had written off pthalocyanines as sensitizers because of the general structure and I didn't recall seeing them in any of the references I have.

Is it the metal free phthalocyanines that are sensitizers? Or, are the metal varieties, eg copper or nickel pthalocyanine, included?

The prices of pthalocyanines are almost reasonable!

-- jason

Jason, IIRC, it is the metal free varieties.

PE