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dl-Serine Covalently Ornamented and Ln3+-Incorporated Arsenotungstates with Fast-Responsive Photochromic and Photoinduced Luminescent Switchable Behaviors
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-09-29 , DOI: 10.1021/acs.inorgchem.2c01806 Kangting Zheng 1 , Yajing Ye 1 , Yanan Shi 1 , Yaxuan Xu 1 , Ziyu Yang 1 , Pengtao Ma 1 , Jingping Wang 1 , Jingyang Niu 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-09-29 , DOI: 10.1021/acs.inorgchem.2c01806 Kangting Zheng 1 , Yajing Ye 1 , Yanan Shi 1 , Yaxuan Xu 1 , Ziyu Yang 1 , Pengtao Ma 1 , Jingping Wang 1 , Jingyang Niu 1
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Three isostructural dl-serine covalently functionalized and multinuclear lanthanide (Ln3+)-embedded arsenotungstates, K2[{As4W44O137(OH)18(H2O)2(dl-Ser)2}{Ln2(H2O)4(dl-Ser)}2{Ln(H2O)7}2]·70H2O (Ln = Sm (1), Eu (2), and Gd (3); dl-Ser = C3H7NO3), were prepared, where the centrosymmetric [{As4W44O137(OH)18(H2O)2(dl-Ser)2}{Ln2(H2O)4(dl-Ser)}2]8– polyanion consists of two {As2W19O59(OH)8(H2O)}6– fragments, integrated with a two-dl-serine-ornamented [W6O23(OH)2(dl-Ser)2{Ln2(H2O)4}2]8– segment. In addition, the photochromic transformation of solid-state compounds 1–3 was observed from colorless to blue after a UV illumination of 4 min, and the decay process lasted as long as ∼20 h in the dark. The coloration kinetic half-life (t1/2) values of compounds 1, 2, and 3 were calculated to be 0.597, 0.920, and 0.723 min, respectively. Furthermore, the luminescent properties and energy migration from arsenotungstates and organic chromophores to Sm3+ and Eu3+ ions in 1 and 2 have been intensively investigated. Further analysis manifests that 1 possesses an effective luminescent switchable behavior, triggered by its fast-responsive photochromism effect.
中文翻译：
具有快速响应光致变色和光致发光可切换行为的 dl-丝氨酸共价修饰和 Ln3+ 掺入砷钨酸盐
三个同构的dl -丝氨酸共价功能化和多核镧系元素 (Ln 3+ ) 包埋的砷钨酸盐，K 2 [{As 4 W 44 O 137 (OH) 18 (H 2 O) 2 ( dl -Ser) 2 }{Ln 2 ( H 2 O) 4 ( dl -Ser)} 2 {Ln(H 2 O) 7 } 2 ]·70H 2 O(Ln = Sm( 1 )、Eu( 2 )和Gd( 3 )；dl-Ser = C 3 H 7 NO 3 )，其中中心对称的 [{As 4 W 44 O 137 (OH) 18 (H 2 O) 2 ( dl -Ser) 2 }{Ln 2 (H 2 O) 4 ( dl -Ser)} 2 ] 8–聚阴离子由两个 {As 2 W 19 O 59 (OH) 8 (H 2 O)} 6–片段组成，与一个双dl-丝氨酸装饰的 [W6 O 23 (OH) 2 ( dl -Ser) 2 {Ln 2 (H 2 O) 4 } 2 ] 8-段。此外，固态化合物1-3在紫外照射4 min 后发生了从无色到蓝色的光致变色转变，并且在黑暗中衰变过程长达 20 h。化合物1、2和3的着色动力学半衰期 ( t 1/2 ) 值分别计算为 0.597、0.920 和 0.723 分钟。此外，已经深入研究了从砷钨酸盐和有机发色团到1和2中的Sm 3+和Eu 3+离子的发光特性和能量迁移。进一步的分析表明，1具有有效的发光可切换行为，由其快速响应的光致变色效应触发。
更新日期：2022-09-29
中文翻译：
具有快速响应光致变色和光致发光可切换行为的 dl-丝氨酸共价修饰和 Ln3+ 掺入砷钨酸盐
三个同构的dl -丝氨酸共价功能化和多核镧系元素 (Ln 3+ ) 包埋的砷钨酸盐，K 2 [{As 4 W 44 O 137 (OH) 18 (H 2 O) 2 ( dl -Ser) 2 }{Ln 2 ( H 2 O) 4 ( dl -Ser)} 2 {Ln(H 2 O) 7 } 2 ]·70H 2 O(Ln = Sm( 1 )、Eu( 2 )和Gd( 3 )；dl-Ser = C 3 H 7 NO 3 )，其中中心对称的 [{As 4 W 44 O 137 (OH) 18 (H 2 O) 2 ( dl -Ser) 2 }{Ln 2 (H 2 O) 4 ( dl -Ser)} 2 ] 8–聚阴离子由两个 {As 2 W 19 O 59 (OH) 8 (H 2 O)} 6–片段组成，与一个双dl-丝氨酸装饰的 [W6 O 23 (OH) 2 ( dl -Ser) 2 {Ln 2 (H 2 O) 4 } 2 ] 8-段。此外，固态化合物1-3在紫外照射4 min 后发生了从无色到蓝色的光致变色转变，并且在黑暗中衰变过程长达 20 h。化合物1、2和3的着色动力学半衰期 ( t 1/2 ) 值分别计算为 0.597、0.920 和 0.723 分钟。此外，已经深入研究了从砷钨酸盐和有机发色团到1和2中的Sm 3+和Eu 3+离子的发光特性和能量迁移。进一步的分析表明，1具有有效的发光可切换行为，由其快速响应的光致变色效应触发。
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