当前位置：
X-MOL 学术
›
ACS Appl. Electron. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Mechanochromic and Single-Molecule Magnetic Properties of a Rhodamine 6G Dy(III) Complex
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2021-02-24 , DOI: 10.1021/acsaelm.0c01132 Mei-Jiao Liu 1 , Zhi-Yuan Fu 2 , Rong Sun 3 , Juan Yuan 1 , Cai-Ming Liu 4 , Bo Zou 2 , Bing-Wu Wang 3 , Hui-Zhong Kou 1
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2021-02-24 , DOI: 10.1021/acsaelm.0c01132 Mei-Jiao Liu 1 , Zhi-Yuan Fu 2 , Rong Sun 3 , Juan Yuan 1 , Cai-Ming Liu 4 , Bo Zou 2 , Bing-Wu Wang 3 , Hui-Zhong Kou 1
Affiliation
|
Mechanochromic luminescent materials have attracted considerable attention because of their interesting color switching behavior under mechanical grinding or hydrostatic pressure. Here, the intriguing Dy(III) complex [Dy(L-c)2(MeOH)2]ClO4·Et2O·H2O·0.5MeOH (1) (HL-c = ring-closed form of rhodamine 6G salicylaldehyde hydrazone) with mechanochromic luminescent behavior was synthesized using the non-mechanochromic HL-c ligand. To the best of our knowledge, it is the first example of a mechanochromic luminescent material where mechanochromism is realized by formation of a lanthanide complex. Complex 1 shows a color change from yellow to red under gentle grinding, and the color can be reversed under a methanol atmosphere. Moreover, the color change can alternatively be triggered by hydrostatic force. These behaviors indicate that the spirolactam C–N bond in the rhodamine 6G moiety breaks under external stimuli to afford the fluorescent ring-opened xanthene. Cleavage of the C–N bond in 1 is verified by density functional theory calculations. Complex 1 also shows slow relaxation of magnetization below 6 K, which is typical of a field-induced single-molecule magnet.
中文翻译：
罗丹明6G Dy（III）配合物的机械变色和单分子磁性
机械变色发光材料由于在机械研磨或静水压力下具有有趣的颜色转换性能而备受关注。在这里，有趣的Dy（III）络合物[Dy（Lc）2（MeOH）2 ] ClO 4 ·Et 2 O·H 2 O·0.5MeOH（1）（HL-c =罗丹明6G水杨醛的闭环形式）使用非机械致变色HL-c配体合成了具有机械致变色的发光行为。据我们所知，这是机械变色发光材料的第一个示例，其中通过形成镧系元素络合物来实现机械变色。综合大楼1在温和研磨下显示出从黄色到红色的颜色变化，并且在甲醇气氛下可以将颜色反转。此外，颜色变化可以替代地由静水压力触发。这些行为表明若丹明6G部分中的螺内酰胺C–N键在外部刺激下断裂，从而提供了荧光开环的x吨。通过密度泛函理论计算验证了1中C–N键的裂解。配合物1还显示出低于6 K的磁化缓慢弛豫，这是场感应单分子磁体的典型现象。
更新日期：2021-03-23
中文翻译：
罗丹明6G Dy（III）配合物的机械变色和单分子磁性
机械变色发光材料由于在机械研磨或静水压力下具有有趣的颜色转换性能而备受关注。在这里，有趣的Dy（III）络合物[Dy（Lc）2（MeOH）2 ] ClO 4 ·Et 2 O·H 2 O·0.5MeOH（1）（HL-c =罗丹明6G水杨醛的闭环形式）使用非机械致变色HL-c配体合成了具有机械致变色的发光行为。据我们所知，这是机械变色发光材料的第一个示例，其中通过形成镧系元素络合物来实现机械变色。综合大楼1在温和研磨下显示出从黄色到红色的颜色变化，并且在甲醇气氛下可以将颜色反转。此外，颜色变化可以替代地由静水压力触发。这些行为表明若丹明6G部分中的螺内酰胺C–N键在外部刺激下断裂，从而提供了荧光开环的x吨。通过密度泛函理论计算验证了1中C–N键的裂解。配合物1还显示出低于6 K的磁化缓慢弛豫，这是场感应单分子磁体的典型现象。
京公网安备 11010802027423号