Lnbomtory ofNeurobtotogy. Narionat Instftr~e ofXferz&i Heat&. Bethesda, Marytand, GSA, und Mwirre Bioiogicar L&oratory. Woods Emote.~Zassact~~sezfs, USA Received 17 September
1975
Physicochemical propertbs of flttarescent membrane probes, 2-pCl-anitinon3phthaenedlsulfonate (p-Cl-ANS), 2-pBranilinonaphth3lenedsuIfonate &I-Br-ANS), merocyanine-S40. methyl. violet. etc., were examined because af the possibility of demanstrat~~ resonance energy-transfer between probes. The emission psectm of pCI-ANS nnd p-Br-ANS and the absorption