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

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Macrocyclic compounds are of great interest for their ability to capture guest molecules into their cavities.In particular,host-guest in-teraction plays a crucial role in the formation of supramolecular compounds.Herein,two host-guest supramolecular compounds,[Al8(OH)8(L)16]·2HL(HL@AIOC-166,HL=4-lodobenzoic acid)and[Al8(OH)8(L)8(L1)8]·2DMF(DMF@AIOC-166,HL1=isoamyl alcohol),are acquired by introducing different types of guest components based on the internal pore cavities of the aluminum molecular ring[Al8(OH)8(L)16](AIOC-166).The inclusion of these guests is attributed to the presence of abundant hydrophilic OH serving as the hy-drogen 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 AIOC-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 of π…π and C-I…π interactions in different compounds.This work investigates the effect of host-guest interaction on NLO,representing a new perspective for designing optical limiting materials.

Host-guest chemistryNoncovalent interactionNonlinear opticalAluminum molecular ring

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

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College of Chemistry,Fuzhou University,Fuzhou,Fujian 350108,China

State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,Fujian 350002,China

Fujian College,University of Chinese Academy of Sciences,No.155 Yangqiao West Road,Fuzhou,Fujian 350002,China

2024

10.1002/cjoc.202400423

中国化学(英文版)
中国化学会 上海有机化学研究所

中国化学(英文版)

CSTPCD
影响因子：0.848
ISSN：1001-604X
年,卷(期)：2024.42(21)