【摘 要】
：
Pursuing purely organic materials with high-efficiency near-infrared(NIR)emissions is fundamentally limited by the large non-radiative decay rates(knr)governed by the energy gap law.To date,reported endeavors to decelerate knr are mainly focused on reduci
【机 构】
：
Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education,Department of
论文部分内容阅读
Pursuing purely organic materials with high-efficiency near-infrared(NIR)emissions is fundamentally limited by the large non-radiative decay rates(knr)governed by the energy gap law.To date,reported endeavors to decelerate knr are mainly focused on reducing the electron-vibration coupling with the electronic nonadiabatic coupling assumed as a constant.Here,we demonstrated a feasible and innovative strategy by employing intermolecular charge-transfer(CT)aggregates(CTA)to realize high-efficiency NIR emissions via nonadiabatic coupling suppression.The formation of CTA engenders intermolecular CT in the excited states;thereby,not only reducing the electronic nonadiabatic coupling and contributing to small knr for high-efficiency NIR photo-luminescence,but also stabilizing excited-state energies and achieving thermally activated delayed fluorescence for high-efficiency NIR electroluminescence.This work provides new insights into aggregates and opens a new avenue for organic materials to overcome the energy gap law and achieve high-efficiency NIR emissions.
其他文献
The blood and immune system of coronavirus disease 2019(COVID-19)infected patients are dysfunctional,and numerous studies have been conducted to resolve their characteristics and pathogenic mechanisms.Nevertheless,the variations of immune responses along
Genome-edited human induced pluripotent stem cells (iPSCs) hold great promise for therapeutic applications.However,low editing efficiency has hampered the applications of CRISPR-Cas9 technology in creating knockout and homology-directed repair (HDR)-edite
The interaction between the aggregation-induced emissive(AIE)luminogens(AIEgen)and the polymer is the key scientific question in the design of functional AIE hydrogels.In this study,we report the AIE behavior of a poly(acrylic acid)(PAAc)and poly(acrylami
Limited benefit population of immune checkpoint inhibitors makes it urgent to screen predictive biomarkers for stratifying the patients.Herein,we have investigated peripheral CD4+T cell signatures in advanced non-small cell lung cancer(NSCLC)patients rece
Chimeric antigen receptor(CAR)T cell is a novel approach,which utilizes anti-tumor immunity for cancer treatment.As compared to the traditional cell-mediated immunity,CAR-T possesses the improved specificity of tumor antigens and in-dependent cytotoxicity
We aimed to assess the associations of large artery stenosis (LAS) and cerebral small vessel disease (CSVD) with the risk of ischemic stroke and to investigate their respective and combined contributions.In the prospective population-based Shunyi Study,1,
Mutations of the genes encoding aminoacyl-tRNA synthetases are highly associated with various central nervous system disorders.Recurrent mutations,including c.5A＞G,p.D2G;c.1367C＞T,p.S456L;c.1535G＞A,p.R512Q and c.1846_1847del,p.Y616Lfs*6 of RARS1 gene,whic
Lysine acetylation,one of the major types of post-translational modifications,plays critical roles in regulating gene expression and protein function.Histone deacetylases(HDACs)are responsible for removing acetyl groups from lysines of both histone and no
Viral diseases cause serious economic loss in farmed animals industry.However,the efficacy of remedies for viral infection in farmed animals is limited,and treatment strategies are generally lacking for aquatic animals.Interactions of commensal microbiota
Evolutionary developmental biology,or Evo-Devo for short,has become an established field that,broadly speaking,seeks to understand how changes in development drive major transitions and innovation in organismal evolution.It does so via in-tegrating the pr