The development of preparation methods for XOFs,as a new class of organic frameworks,plays a crucial role in shaping their structures,functions,and potential applications.In this study,we presented the construction of...The development of preparation methods for XOFs,as a new class of organic frameworks,plays a crucial role in shaping their structures,functions,and potential applications.In this study,we presented the construction of chiral supramolecular 2D halogen-bonded organic frameworks(XOFs)through a post-synthetic modification strategy.A linear halogen-bonded organic polymer(XOP),XOP-DPBA,decorated with aldehyde groups,was initially prepared to validate the feasibility of post-synthetic modification for XOF construction and functionalization.XOP-DPBA exhibited excellent reactivity with amines,forming imine bonds.By utilizing this reactivity,a series of cross-linked 2D XOFs were efficiently prepared through post-synthetic modified cross-linking reactions.Furthermore,we successfully introduced chiralα/β-cyclodextrins(α/β-CD)into the XOF skeletons via host-vip interactions,resulting in the fabrication of chiral supramolecular 2D XOFs.These chiral XOFs displayed the induced circular dichroism(ICD)signals and assembled them into helical fibers.The post-synthetic modification strategy demonstrated its versatility and simplicity for the construction and functionalization of XOFs.展开更多
An ultrasensitive detection and effective removal material was successfully developed by using a pillar[n]arene-based supramolecular polymer gel(MTP5?HB).The MTP5?HB can ultrasensitively recognize Cu^2+and Fe^3+,and t...An ultrasensitive detection and effective removal material was successfully developed by using a pillar[n]arene-based supramolecular polymer gel(MTP5?HB).The MTP5?HB can ultrasensitively recognize Cu^2+and Fe^3+,and the limits of detection(LODs)for Cu^2+and Fe^3+are 1.55 and 2.68 nmol/L,respectively.Additionally,the in-situ generated metallogel MTP5?HB-Cu can exclusively detect CN,and the LOD for CN is 1.13 nmol/L.Noticeably,the xerogel of MTP5?HB-Cu can effectively remove CN from aqueous solution with 94.40%removal rate.Test kit based on MTP5?HB-Cu is also prepared for convenient detection of CN.展开更多
The escalating utilization of nuclear energy and nuclear medicine raises concerns about the environmental impact of radioactive iodine,necessitating the development of effective iodine adsorbents,especially under a re...The escalating utilization of nuclear energy and nuclear medicine raises concerns about the environmental impact of radioactive iodine,necessitating the development of effective iodine adsorbents,especially under a real-world scenario with extremely low iodine concentration and elevated temperature.Herein,we have presented the construction of a nitrogen-abundant two-dimensional(2D)halogen-bonded organic framework,XOF-TNP,characterized by exceptional crystallinity,thermal stability,and nitrogen-rich structures.XOF-TNP exhibits strong binding to iodine,thanks to the fact that iodine can be pre-enriched into the framework through N…I interactions.The nitrogen-rich framework and I^(+) synergistically have extremely high binding force to iodine,enabling the rapid and efficient capture of iodine in both vapor and solution phases,with significant recyclability.Further flow-through adsorption experiments using an XOF-TNP-packed column achieve 99%iodine removal from hexane and aqueous solutions,surpassing traditional activated carbon.This highlights its potential for environmental remediation.XOFTNP enables the development of a novel rewritable security paper,utilizing its iodine adsorption properties to encrypt and decrypt QR codes.This research expands the application scope of halogen-bonded organic frameworks,providing insights into the design of materials for environmental remediation and security applications.展开更多
基金supported by the National Natural Science Foundation of China(22371218,21702153,21801194)the Wuhan Science and Technology Bureau(whkxjsj009)+1 种基金the support of the Core Facility of Wuhan Universitythe Large-scale Instrument and Equipment Sharing Foundation of Wuhan University。
文摘The development of preparation methods for XOFs,as a new class of organic frameworks,plays a crucial role in shaping their structures,functions,and potential applications.In this study,we presented the construction of chiral supramolecular 2D halogen-bonded organic frameworks(XOFs)through a post-synthetic modification strategy.A linear halogen-bonded organic polymer(XOP),XOP-DPBA,decorated with aldehyde groups,was initially prepared to validate the feasibility of post-synthetic modification for XOF construction and functionalization.XOP-DPBA exhibited excellent reactivity with amines,forming imine bonds.By utilizing this reactivity,a series of cross-linked 2D XOFs were efficiently prepared through post-synthetic modified cross-linking reactions.Furthermore,we successfully introduced chiralα/β-cyclodextrins(α/β-CD)into the XOF skeletons via host-vip interactions,resulting in the fabrication of chiral supramolecular 2D XOFs.These chiral XOFs displayed the induced circular dichroism(ICD)signals and assembled them into helical fibers.The post-synthetic modification strategy demonstrated its versatility and simplicity for the construction and functionalization of XOFs.
基金supported by the National Natural Science Foundation of China(Nos.21661028,21662031,21574104)the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(No.IRT 15R56)。
文摘An ultrasensitive detection and effective removal material was successfully developed by using a pillar[n]arene-based supramolecular polymer gel(MTP5?HB).The MTP5?HB can ultrasensitively recognize Cu^2+and Fe^3+,and the limits of detection(LODs)for Cu^2+and Fe^3+are 1.55 and 2.68 nmol/L,respectively.Additionally,the in-situ generated metallogel MTP5?HB-Cu can exclusively detect CN,and the LOD for CN is 1.13 nmol/L.Noticeably,the xerogel of MTP5?HB-Cu can effectively remove CN from aqueous solution with 94.40%removal rate.Test kit based on MTP5?HB-Cu is also prepared for convenient detection of CN.
基金supported by the National Natural Science Foundation of China (22371218, 21702153, and 21801194)Wuhan Science and Technology Bureau (whkxjsj009)+1 种基金the support of the Core Facility of Wuhan Universitythe Large-scale Instrument and Equipment Sharing Foundation of Wuhan University
文摘The escalating utilization of nuclear energy and nuclear medicine raises concerns about the environmental impact of radioactive iodine,necessitating the development of effective iodine adsorbents,especially under a real-world scenario with extremely low iodine concentration and elevated temperature.Herein,we have presented the construction of a nitrogen-abundant two-dimensional(2D)halogen-bonded organic framework,XOF-TNP,characterized by exceptional crystallinity,thermal stability,and nitrogen-rich structures.XOF-TNP exhibits strong binding to iodine,thanks to the fact that iodine can be pre-enriched into the framework through N…I interactions.The nitrogen-rich framework and I^(+) synergistically have extremely high binding force to iodine,enabling the rapid and efficient capture of iodine in both vapor and solution phases,with significant recyclability.Further flow-through adsorption experiments using an XOF-TNP-packed column achieve 99%iodine removal from hexane and aqueous solutions,surpassing traditional activated carbon.This highlights its potential for environmental remediation.XOFTNP enables the development of a novel rewritable security paper,utilizing its iodine adsorption properties to encrypt and decrypt QR codes.This research expands the application scope of halogen-bonded organic frameworks,providing insights into the design of materials for environmental remediation and security applications.
