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- Xref: sparky sci.chem:5531 rec.pyrotechnics:4151
- Newsgroups: sci.chem,rec.pyrotechnics
- Path: sparky!uunet!walter!porthos!prefect!tony2
- From: tony2@prefect.cc.bellcore.com (gozdz,antoni s)
- Subject: Re: Glow Sticks
- Organization: Bellcore, Livingston, NJ
- Date: Mon, 21 Dec 92 23:21:34 GMT
- Message-ID: <1992Dec21.232134.9123@porthos.cc.bellcore.com>
- Keywords: Glow
- Sender: netnews@porthos.cc.bellcore.com (USENET System Software)
- Lines: 32
-
- In article <1992Dec21.211520.4682@samba.oit.unc.edu> cheech@med.unc.edu (cheech@ocean.med.unc.edu (Greg Young)) writes:
- >
- >>
- >>So far as I know the only way to get the dyes needed is to synthesize them
- >>yourself. If anyone knows otherwise, please let me know!
- >>
- >> -- 007
- >
- >A quick check of the Aldrich catalog shows:
- >
- >26,419-9 9,10-Bis(phenylethynyl)anthracene 100mg 17.10
- >
- >D20,500-1 9,10-Diphenylanthracene 1g 17.70
- >
- >The prices are a little steep, but a lot of the fluorescent materials
- >are effective at very low concentrations. The diphenyl material looks
- >like the thing to play with but, given the perversity of the universe,
- >it probably has a tenth the fluoresence yield.
- >
- >Greg
- >
- >
-
- Interestingly enough, nature is not THAT perverse.
- Quoting after Hanhela[1], the former has a
- Q of 0.85+-0.05 (l(max)=477, 507 nm),
- the latter's Q is 0.91+-0.08, (l(max)=412, 430 nm).
- The fluorescence of these compounds is not affected by oxygen.
-
- Tony
-
- [1] Hanhela and Paul, Austr. J. Chem. 1984, 37, 553-9.
-