The study of luminescence phenomena in non-conjugated systems,namely clusteroluminescence,has gained significant attention for the development of advanced luminescent materials.While conventional strategies to manipul...The study of luminescence phenomena in non-conjugated systems,namely clusteroluminescence,has gained significant attention for the development of advanced luminescent materials.While conventional strategies to manipulate the luminescent performances are based on complicated chemical reactions.In contrast,nature employs complexation to modulate luminescence,inspiring researchers to adopt an engineering approach for the construction of efficient clusteroluminogens.In this work,we explore the complexationinduced clusteroluminescence of carbonyl-based polymers with nitrogen-containing organic bases,exemplified by polyamide,polyester,polycarbonate,and poly(monothiocarbonate).展开更多
Clusteroluminogens(CLgens),nonconjugated structures with visible luminescence at the clustering state,have recently received remarkable attention due to their great theoretical significance and practical values.In car...Clusteroluminogens(CLgens),nonconjugated structures with visible luminescence at the clustering state,have recently received remarkable attention due to their great theoretical significance and practical values.In carbonyl-based aliphatic polymers,(n,π*)transition of carbonyl groups and the through-space interactions have been demonstrated to play an important role in their clusteroluminescence(CL)properties,but it is still a big challenge to manipulate their CL at the molecular level.In this work,six nonconjugated carbonyl-based polymers with different heteroatoms and steric hindrances were synthesized,and their photophysical properties were systematically studied.These polymers all showed CL but with different emission efficiency and wavelength.Experimental and theoretical studies indicated that the CL properties could be manipulated by changing the electronic structures of carbonyl groups and the rigidity of polymer chains.This work not only gains further insights into the CL mechanism but also provides reliable strategies to design and manipulate non-conjugated luminescent materials.展开更多
基金support from the National Natural Science Foundation of China(22205197)the Youth Talent Excellence Program of ZJU-Hangzhou Global Scientific and Technological Innovation Center.
文摘The study of luminescence phenomena in non-conjugated systems,namely clusteroluminescence,has gained significant attention for the development of advanced luminescent materials.While conventional strategies to manipulate the luminescent performances are based on complicated chemical reactions.In contrast,nature employs complexation to modulate luminescence,inspiring researchers to adopt an engineering approach for the construction of efficient clusteroluminogens.In this work,we explore the complexationinduced clusteroluminescence of carbonyl-based polymers with nitrogen-containing organic bases,exemplified by polyamide,polyester,polycarbonate,and poly(monothiocarbonate).
基金Fundamental Research Funds for the Central Universities,Grant/Award Number:2021QNA4032Molecular Aggregates and South China University of Technology,Grant/Award Number:2019B030301003+1 种基金National Science Foundation of the People’s Republic of China,Grant/Award Numbers:51973190,21774108Zhejiang Provincial Department of Science and Technology,Grant/Award Number:2020R52006。
文摘Clusteroluminogens(CLgens),nonconjugated structures with visible luminescence at the clustering state,have recently received remarkable attention due to their great theoretical significance and practical values.In carbonyl-based aliphatic polymers,(n,π*)transition of carbonyl groups and the through-space interactions have been demonstrated to play an important role in their clusteroluminescence(CL)properties,but it is still a big challenge to manipulate their CL at the molecular level.In this work,six nonconjugated carbonyl-based polymers with different heteroatoms and steric hindrances were synthesized,and their photophysical properties were systematically studied.These polymers all showed CL but with different emission efficiency and wavelength.Experimental and theoretical studies indicated that the CL properties could be manipulated by changing the electronic structures of carbonyl groups and the rigidity of polymer chains.This work not only gains further insights into the CL mechanism but also provides reliable strategies to design and manipulate non-conjugated luminescent materials.
