Synthesis and Properties of Annulated 2-(Azaar-2-yl)- and 2,2'-Di(azaar-2-yl)-9,9'-spirobifluorenes

Molecules

Jing Lu Liang¹  Hyochang Cha¹ 

[1] id="af1-molecules-18-13680">College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Kor

关键词: 9;    9'-spirobifluorene;    quinoline;    1;    8-naphthyridine;    benzo[h]quinoline;    1;    10-phenanthroline;    XRD;    photoluminescence;   

DOI  :  10.3390/molecules181113680

来源: mdpi

【 摘 要 】

A series of 9,9'-spirobifluorene-derived N-heterocycles were prepared by the reactions of 8,9-dihydrospiro(benzo[b]fluorene-11,9'-fluoren)-6(7H)-one and 8,8',9,9'-tetrahydro-11,11'-spirobi(benzo[b]fluorene)-6,6'(7H,7'H)-dione with a series of 2-amino-arenecarbaldehydes such as 2-aminobenzaldehyde, 2-aminonicotinealdehyde, 1-amino-2-naphthaldehyde, and 8-aminoquinoline-7-carbaldehyde. In addition to the absorption maxima based on the parent 9,9'-spirobifluorene skeleton in the 225–234, 239–280, 296–298, and 308–328 nm regions, the absorptions due to the π-π* transitions of the heterocycles were observed in the 351–375 nm region in the UV absorption spectra. All the compounds showed strong photoluminescences in the 390–430 nm region.

【 授权许可】

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