Research group of Professor Jin Guoxin, Fudan University: reversible structural transformation between molecular Solomon and unusual asymmetric trilobe

For the molecular type compounds with interlocking structure, the attraction lies not only in their interesting topological structure, but also in their potential applications as functional materials and nanoscale devices in the field of molecular machinery, which has attracted more and more scientists' attention In the process of exploring the synthesis of these compounds, scientists have synthesized some interlocking molecular compounds with complex topological structure by designing and using different synthesis strategies, such as molecular Borromean ring, metal alkanes and different molecular kinks However, due to the structural stability of these molecular compounds, it is still a challenge to realize the conversion between different topological structures under mild conditions Recently, Jin Guoxin research group of Fudan University has made new progress in this field (J am Chem SOC 2019, DOI: 10.1021/jacs.9b08254) The research group has been devoted to the design, assembly and application of carborane chemistry and organometallic supramolecular compounds (ring and cage) The research group has published more than 300 papers in international famous journals such as J am Chem SOC., angel Chem Int ed., chem, NAT Commun., chem SOC Rev., acc chem Res., coord Chem Rev Prof Jin Guoxin is the leader of the State Key Discipline of inorganic chemistry in the Department of chemistry, Fudan University, the winner of the national fund for Distinguished Young Scholars (1999), and the distinguished professor of Changjiang Scholars (2001) He enjoys the special government allowance of the State Council Deputy editor in chief of Dalton Transactions, coordination chemistry review, organically, Journal of organically chemistry , Journal of inorganic chemistry, organic chemistry and other well-known journals; member of Royal Society of chemistry; member of the academic committee of National Key Laboratory of organometallic chemistry, National Key Laboratory of rare earth resource utilization, National Key Laboratory of coordination chemistry and National Key Laboratory of carbonyl synthesis and selective oxidation, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Member of the 9th, 10th, 12th and 13th chemical evaluation expert group of NSFC, academic member of Coordination Catalysis Committee and Applied Chemistry Committee of China Chemical Society He has been engaged in the research of organometallic macrocycle, carborane chemistry and organometallic olefin polymerization catalyst for a long time; in 2009, he won the first prize of Shanghai Natural Science Award, and in 2016, he won the Humboldt Research Award of Germany Frontier research achievements: reversible structural transformation between molecular Solomon and unusual asymmetric trilobal junction The research group of Professor Jin Guoxin of Fudan University has made a series of cutting-edge work in the design and synthesis of interlocking molecular compounds based on the half sandwiched iridium and rhodium metal angle and in the exploration of their properties On the one hand, a series of molecular Borromean rings and metal chorohydrocarbons (j.am.chem.soc 2013, 135) have been reasonably designed and synthesized by using rigid building units, 8125–8128; Angew Chem Int Ed   2014 , 53 , 11218–11222; J Am Chem Soc   2017 , 139 , 1653-1660; Chem   2017 , 3 , 110-121; Angew Chem Int Ed   2019 , 58 , 5882-5886; J Am Chem Soc   2019 , 141 , 9160-9164; Chem Commun   2018 , 54 , 1559-1562; Chem Asian J   2019 , 14 , 2712-2718), on the other hand, some molecular kink compounds with important topological significance were designed and synthesized by using semi-rigid ligands (NAT Commun 2019, 10, 2057; chem EUR J 2019, 25, 9721-9727) Recently, because of its small size, diversity, self-guidance, self-assembly, accuracy and high efficiency, self-adaptive, driven only by chemical energy or thermal energy, molecular coordination and other unmatched performance, molecular machinery has gradually become a research hotspot In the self-assembly process driven by coordination, the coordination bond between metal ions and coordination atoms has the characteristics of dynamic balance of formation and fracture, which provides an important basis for the design and synthesis of molecular machines based on spontaneous structural transformation of external stimulus response Recently, Professor Jin Guoxin's research group has cleverly used the chemical reaction characteristics of monovalent silver ions to realize the reversible structural transformation between the molecular Solomon and the unusual asymmetric triple junction under mild conditions, and has carried out in-depth research on the transformation behavior of the single ring and the interlocking structure of the obtained molecular Solomon in the solution state Fig 1 The related synthesis routes of molecular Solomon and asymmetric trilobal junction (source: j.am Chem SOC.) Fig 2 Crystal structure diagram and simplified structure diagram of molecular Solomon (source: j.am Chem SOC.) Fig 3 Crystal structure diagram and simplified structure diagram of asymmetric trilobal junction (source: j.am Chem SOC.) This research achievement was recently published in Journal of the American Chemical Society (DOI: 10.1021 / JACS 9b08254) in the form of article Zhang Haining, a doctoral student, is the first author of the paper, and Professor Jin Guoxin is the corresponding author This work was supported by NSFC and Shanghai Science and Technology Commission Nowadays, people and scientific research have been paid more and more attention in the economic life China has ushered in the "node of science and technology explosion" Behind the progress of science and technology is the work of countless scientists In the field of chemistry, in the context of the pursuit of innovation driven, international cooperation has been strengthened, the influence of Returned Scholars in the field of R & D has become increasingly prominent, and many excellent research groups have emerged in China For this reason, CBG information adopts the 1 + X reporting mechanism CBG information website, chembeangoapp, chembeango official micro blog, CBG information wechat subscription number and other platforms jointly launch the column of "people and scientific research", approach the representative research groups in China, pay attention to their research, listen to their stories, record their demeanor, and explore their scientific research spirit.