具有对映不纯n给体的两个手性EuIII和SmIII对映体：表现出强三次谐波生成和光致发光特性

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2024-11-01 DOI:10.1039/D4CE01052C

Jinliang Zhang, Zhiqiang Zhang, Congli Gao and Xi-Li Li

{"title":"具有对映不纯n给体的两个手性EuIII和SmIII对映体：表现出强三次谐波生成和光致发光特性","authors":"Jinliang Zhang, Zhiqiang Zhang, Congli Gao and Xi-Li Li","doi":"10.1039/D4CE01052C","DOIUrl":null,"url":null,"abstract":"The reaction of the precursors Eu(dbm)3(H2O) and Sm(dbm)3(H2O) with enantiopure monobidentate N-donor ligands (LR/LS), respectively, afforded two chiral EuIII and SmIII enantiomeric pairs, namely Ln(dbm)3(LR)/Ln(dbm)3(LS) (Ln = EuIII, D-1/L-1 and Ln = SmIII, D-2/L-2), where dbm− = dibenzoylmethanate and LR/LS = (−)/(+)-4,5-pinenepyridyl-2-pyrazine. Compared with their precursors, D-1 and D-2 display highly enhanced photophysical properties under excitation with visible light. A study of nonlinear optical (NLO) response reveals that Eu(dbm)3(H2O) and Sm(dbm)3(H2O) only show moderate second-harmonic generation (SHG) responses, while D-1/L-1 and D-2/L-2 only exhibit strong third-harmonic generation (THG) responses. The THG intensities of D-1/L-1 and D-2/L-2 are 62/59 and 56/58 × α-SiO2, respectively. These findings clearly indicate that introducing LR and LS into Eu(dbm)3(H2O) and Sm(dbm)3(H2O) can not only highly boost the photophysical performances but also lead to the switching of the NLO responses from SHG to THG.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 47","pages":" 6757-6764"},"PeriodicalIF":2.6000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Two chiral EuIII and SmIII enantiomeric pairs with enantiopure N-donor ligands: showing strong third-harmonic generation and photoluminescence properties†\",\"authors\":\"Jinliang Zhang, Zhiqiang Zhang, Congli Gao and Xi-Li Li\",\"doi\":\"10.1039/D4CE01052C\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The reaction of the precursors Eu(dbm)3(H2O) and Sm(dbm)3(H2O) with enantiopure monobidentate N-donor ligands (LR/LS), respectively, afforded two chiral EuIII and SmIII enantiomeric pairs, namely Ln(dbm)3(LR)/Ln(dbm)3(LS) (Ln = EuIII, D-1/L-1 and Ln = SmIII, D-2/L-2), where dbm− = dibenzoylmethanate and LR/LS = (−)/(+)-4,5-pinenepyridyl-2-pyrazine. Compared with their precursors, D-1 and D-2 display highly enhanced photophysical properties under excitation with visible light. A study of nonlinear optical (NLO) response reveals that Eu(dbm)3(H2O) and Sm(dbm)3(H2O) only show moderate second-harmonic generation (SHG) responses, while D-1/L-1 and D-2/L-2 only exhibit strong third-harmonic generation (THG) responses. The THG intensities of D-1/L-1 and D-2/L-2 are 62/59 and 56/58 × α-SiO2, respectively. These findings clearly indicate that introducing LR and LS into Eu(dbm)3(H2O) and Sm(dbm)3(H2O) can not only highly boost the photophysical performances but also lead to the switching of the NLO responses from SHG to THG.\",\"PeriodicalId\":70,\"journal\":{\"name\":\"CrystEngComm\",\"volume\":\" 47\",\"pages\":\" 6757-6764\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"CrystEngComm\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/ce/d4ce01052c\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"CrystEngComm","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ce/d4ce01052c","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

前体Eu(dbm)3（H2O）和Sm(dbm)3（H2O）分别与对映纯单齿n给体（LR/LS）反应，得到两个手性EuIII和SmIII对映体，即Ln(dbm)3(LR)/Ln(dbm)3(LS) (Ln = EuIII， D-1/L-1和Ln = SmIII, D-2/L-2)，其中dbm−=二苯甲酰甲烷，LR/LS =(−)/(+)-4,5-蒎烯吡啶-2-吡嗪。与前驱体相比，D-1和D-2在可见光激发下表现出高度增强的光物理性质。非线性光学（NLO）响应研究表明，Eu(dbm)3（H2O）和Sm(dbm)3（H2O）仅表现出中等的二次谐波（SHG）响应，而D-1/L-1和D-2/L-2仅表现出强烈的三次谐波（THG）响应。D-1/L-1和D-2/L-2的THG强度分别为62/59和56/58 × α-SiO2。这些结果清楚地表明，在Eu(dbm)3（H2O）和Sm(dbm)3（H2O）中引入LR和LS不仅可以显著提高光物理性能，而且可以导致NLO响应从SHG转换为THG。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Two chiral EuIII and SmIII enantiomeric pairs with enantiopure N-donor ligands: showing strong third-harmonic generation and photoluminescence properties†

查看原文本刊更多论文

Two chiral EuIII and SmIII enantiomeric pairs with enantiopure N-donor ligands: showing strong third-harmonic generation and photoluminescence properties†

The reaction of the precursors Eu(dbm)₃(H₂O) and Sm(dbm)₃(H₂O) with enantiopure monobidentate N-donor ligands (L_R/L_S), respectively, afforded two chiral Eu^III and Sm^III enantiomeric pairs, namely Ln(dbm)₃(L_R)/Ln(dbm)₃(L_S) (Ln = Eu^III, D-1/L-1 and Ln = Sm^III, D-2/L-2), where dbm⁻ = dibenzoylmethanate and L_R/L_S = (−)/(+)-4,5-pinenepyridyl-2-pyrazine. Compared with their precursors, D-1 and D-2 display highly enhanced photophysical properties under excitation with visible light. A study of nonlinear optical (NLO) response reveals that Eu(dbm)₃(H₂O) and Sm(dbm)₃(H₂O) only show moderate second-harmonic generation (SHG) responses, while D-1/L-1 and D-2/L-2 only exhibit strong third-harmonic generation (THG) responses. The THG intensities of D-1/L-1 and D-2/L-2 are 62/59 and 56/58 × α-SiO₂, respectively. These findings clearly indicate that introducing L_R and L_S into Eu(dbm)₃(H₂O) and Sm(dbm)₃(H₂O) can not only highly boost the photophysical performances but also lead to the switching of the NLO responses from SHG to THG.