New synthesis of multi-layer 3 D chiral molecules has been developed under novel conditions to give better outcomes.The aggregation-induced emission(AIE),UV irradiation/excitation,charge transfer(CT)and local excited(...New synthesis of multi-layer 3 D chiral molecules has been developed under novel conditions to give better outcomes.The aggregation-induced emission(AIE),UV irradiation/excitation,charge transfer(CT)and local excited(LE)ππ*transitions have been investigated on a representative individual enantiomer of pseudo C_2 asymmetry which was made possibly by differentiating moieties on phosphorous on N-phosphonyl ring of chiral sandwich framework.Meanwhile,a new tandem C–N/C–C coupling reaction was unexpectedly rendered providing a novel access to special benzo[a]carbazoles.展开更多
Conjugated polymers and oligomers have great potentials in various fields,especially in materials and biological sciences because of their intriguing electronic and optoelectronic properties.In recent years,the throug...Conjugated polymers and oligomers have great potentials in various fields,especially in materials and biological sciences because of their intriguing electronic and optoelectronic properties.In recent years,the through-space conjugation system has emerged as a new assembled pattern of multidimensional polymers.Here,a novel series of structurally condensed multicolumn/multilayer 3D polymers and oligomers have been designed and synthesized through one-pot Suzuki polycondensation(SPC).The intramolecularly stacked arrangement of polymers can be supported by either X-ray structural analysis or computational analysis.In all cases,polymers were obtained with modest to good yields,as determined by GPC and 1 H-NMR.MALDI-TOF analysis has proven the speculation of the step-growth process of this polymerization.The computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic transition.Experimental results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.展开更多
基金supported by the National Natural Science Foundation of China(91956110,21672100)Robert A.Welch Foundation(D-1361,USA)+1 种基金financial support from Beijing National Laboratory for Molecular Sciences(BNLMS201910)support from the School of Pharmaceutical Science and Technology(SPST),Tianjin University,Tianjin,China。
文摘New synthesis of multi-layer 3 D chiral molecules has been developed under novel conditions to give better outcomes.The aggregation-induced emission(AIE),UV irradiation/excitation,charge transfer(CT)and local excited(LE)ππ*transitions have been investigated on a representative individual enantiomer of pseudo C_2 asymmetry which was made possibly by differentiating moieties on phosphorous on N-phosphonyl ring of chiral sandwich framework.Meanwhile,a new tandem C–N/C–C coupling reaction was unexpectedly rendered providing a novel access to special benzo[a]carbazoles.
基金supported by the Welch Foundation(D-1361,USA)the National Natural Science Foundation of China(22071102 and 91956110)。
文摘Conjugated polymers and oligomers have great potentials in various fields,especially in materials and biological sciences because of their intriguing electronic and optoelectronic properties.In recent years,the through-space conjugation system has emerged as a new assembled pattern of multidimensional polymers.Here,a novel series of structurally condensed multicolumn/multilayer 3D polymers and oligomers have been designed and synthesized through one-pot Suzuki polycondensation(SPC).The intramolecularly stacked arrangement of polymers can be supported by either X-ray structural analysis or computational analysis.In all cases,polymers were obtained with modest to good yields,as determined by GPC and 1 H-NMR.MALDI-TOF analysis has proven the speculation of the step-growth process of this polymerization.The computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic transition.Experimental results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.
