Crystal Structures and Emitting Properties of Trifluoromethylaminoquinoline Derivatives: Thermal Single-Crystal-to-Single-Crystal Transformation of Polymorphic Crystals That Emit Different Colors
作者:Yuichiro Abe、Satoru Karasawa、Noboru Koga
DOI:10.1002/chem.201201213
日期:2012.11.19
crystalline state, TFMAQ derivatives emitted at longer wavelengths (=464–530 nm) with lower intensity (Φf(c)=0.01–0.28) than those in n‐hexane solution. The polymorphous crystals of 2 and 3 emitted different colors: 2, =470 and 530 nm with Φf(c)=0.04 and approximately 0.01 for crystal GB and YG, respectively; and 3, =464 and 506 nm with Φf(c)=0.28 and approximately 0.28 for crystal B and G, respectively
制备并结晶了在喹啉环的7位具有胺(1),甲胺(2),苯胺(3)和二甲胺(4)取代基的2,4-三氟甲基喹啉(TFMAQ)衍生物。获得了六种晶体,包括2(GB和YG晶体)和3(B和G晶体)的多晶型物,并通过X射线晶体学对其进行了表征。在溶液中,TFMAQ衍生物发射的相对强的荧光(= 418-469纳米和Φ ˚F(S)= 0.23-0.60)取决于溶剂的极性。从利珀特-又贺图,Δ μ获得的值在7.8–14 D范围内。在结晶状态,TFMAQ衍生物在较长波长(发射= 464-530纳米)与较低强度(Φ ˚F比在(C)= 0.01-0.28)ñ -己烷溶液。的多晶型晶体2和3发射不同的颜色:2,= 470和具有530纳米Φ ˚F(C)= 0.04和用于分别晶体GB和YG,大约0.01; 和3,= 464及与506纳米Φ ˚F(C)= 0.28和0.28左右分别晶体B和G,。在2和3的两种晶型中,晶体G