Host-Guest Chemistry and Nonlinear Optical Behaviors of Aluminum Molecular Rings  

作　　者：Yi-Bo Chen Cheng-Yang Zhang Dan Luo Ran-Qi Chen Jian Zhang Shu-Mei Chen Wei-Hui Fang 

机构地区：[1]College of Chemistry,Fuzhou University,Fuzhou,Fujian,350108 China [2]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,Fujian,350002 China [3]Fujian College,University of Chinese Academy of Sciences,No.155 Yangqiao West Road,Fuzhou,Fujian,350002 China

出　　处：《Chinese Journal of Chemistry》2024年第21期2581-2588,共8页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(U23A2095,22371278);Funding of the Fujian Provincial Chemistry Discipline Alliance,Natural Science Foundation of Fujian Province(2021J06035);Youth Innovation Promotion Association of the Chinese Academy of Sciences(Y2018081).

摘　　要：Macrocyclic compounds are of great interest for their ability to capture guest molecules into their cavities.In particular,host-guest interaction plays a crucial role in the formation of supramolecular compounds.Herein,two host-guest supramolecular compounds,[Al_(8)(OH)_(8)(L)_(16)]·2HL(HL@AlOC-166,HL=4-Iodobenzoic acid)and[Al_(8)(OH)_(8)(L)_(8)(L1)_(8)]·2DMF(DMF@AlOC-166,HL1=isoamyl alcohol),are acquired by introducing different types of guest components based on the internal pore cavities of the aluminum molecular ring[Al_(8)(OH)_(8)(L)_(16)](AlOC-166).The inclusion of these guests is attributed to the presence of abundant hydrophilic OH serving as the hydrogen bond donors inward the ring cavity.Host-guest compounds usually exhibit superior nonlinear optical(NLO)response due to the existence of guest molecules that could change symmetry,dipole moments,charge distributions,etc.Unexpectedly,the AlOC-166 achieved the best NLO results,although it had no guest molecules inside its molecular ring,which breaks the traditional concept.The reason for this trend can be explained by the difference in intermolecular force rather than intramolecular interaction,mainly related to the amount and strength ofπ···πand C—I···πinteractions in different compounds.This work investigates the effect of host-guest interaction on NLO,representing a new perspective for designing optical limiting materials.

关 键 词：Host-guest chemistry Noncovalent interaction Nonlinear optical Aluminum molecular ring 

分 类 号：O62[理学—有机化学]