Boron dipyrromethene (BDP)-based derivative very bright gas phase fluorescence. Vapours of 3,5-dimethyl-BDP have fluorescence that can be easily seen by naked eye when excited with a 365 nm LED torch. The bright fluorescence of BDP volatile dyes is a unique property. Gas-phase fluorescence excitation λmax = 494 nm; gas-phase fluorescence emission λmax = 499 nm.
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