Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 4, Issue 23, Pages 5744-5747Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b206259c
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Two-photon induced frequency-upconversion emission, two-photon-pumped (TPP) lasing and optical limiting properties of trans-2-[p-(N-methyl-N-hydroxyethylamino) styryl]-N-methylbenzothiazolinium iodide ( 1) and trans-2-[p-(N-ethyl-N-hydroxyethylamino) styryl]-N-methylbenzothiazolinium iodide ( 2) were investigated. These two compounds exhibit excellent TPP lasing at 634 nm when pumped with a 1064 nm pulsed laser beam, and highly efficient optical limiting performance in 1 cm path-length dimethyl formamide solution pumped with 1064 nm laser pulses at 0.01 similar to 6.75 mJ. Significantly, these compounds are very stable upon exposure to light for a long time.
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