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Magnetic field dependence of intramolecular exciplex formation in polymethyelene-linked A–D systems

✍ Scribed by H. Staerk; W. Kühnle; R. Treichel; A. Weller

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
641 KB
Volume
118
Category
Article
ISSN
0009-2614

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✦ Synopsis

An erlremely large mcrease of exnplex fluorescence inteuzaty has been observed with pholoelrcitcd compounds pyrene-(CH,),-DMA in acetoruuile when an external magnetic field of several hundred gauss is applied. The effect IS rcaddy explained as originating from the radical ion pair which can undergo a magneticrfield-dependent singlet-triplet conversion due to nuclear hyperfine coupling, or an association to form tie excipleh The increasing influence of the achange inleraction in the radical ion pair ~th deer easing cham length (CH,), is evldent I. Inboductios

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