Photoexcitation dynamics and energy engineering in supramolecular doping of organic conjugated molecules
作者机构：Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)30 South Puzhu RoadNanjing 211816China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications9 Wenyuan RoadNanjing 210023China College of Science and Institute of New EnergyChina University of Petroleum(East China)Qingdao 266580China Shaanxi Institute of Flexible Electronics(SIFE)Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072 ShaanxiChina
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2023年第12卷第2期
页 面：183-193页
核心收录：
学科分类：070207[理学-光学] 07[理学] 08[工学] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学]
基 金：The work is supported by the National Key R&D Program of China(No.2020YFA0709900) National Natural Science Foundation of China(No.62288102,61874053,22075136,22105099,62105262 and 62205141) Natural Science Funds of the Education Committee of Jiangsu Province(No.18KA430009) the Natural Science Foundation of Jiangsu Province(No.BK202006700) the Six Peak Talents Foundation of Jiangsu Province(XCLCXTD-009) the"High-Level Talents in Six Industries"of Jiangsu Province(No.XYDxX-019) the China Postdoctoral Science Foundation(2022M711591) Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX22_1284 and KYCX21_0772) the open research fund from the State Key Laboratory of Luminescent Materials and Devices(South China University of Technology) the Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology NO.OMST202101.Y.H.acknowledges support from Jiangsu Funding Program for Excellent Postdoctoral Talent
主 题：spectroscopy. solution. excitation
摘 要：Doping and blending strategies are crucial means to precisely control the excited states and energy level in conjugated molecular ***,effective models and platforms are rarely proposed to systematically explore the effects of the formation of trapped doped centers on heterogeneous structures,energy level and ultrafast photophysical ***,for deeply understanding the impact of molecular doping in film energy levels and photoexcitation dynamics,we set a supramolecular N-B coordination composed by the conjugated molecules of pyridine functionalized diarylfluorene(host material),named as ODPF-Phpy and ODPF-(Phpy)2,and the molecule of tris(perfluorophenyl)borane(BCF)(guest material).The generation of the molecular-level coordination bond increased the binding energy of N atoms and tuned the band-gap,leading to a new fluorescent emission center with longer excitation wavelength and emission *** intermolecular Forster resonance energy transfer(FRET)in blending flms make it present inconsistent fluorescent behaviors compared to that in *** charge transfer(CT)state of N-B coordinated compounds and the changed dielectric constant of blending films resulted in a large PL spectra red-shift with the increased dopant ratio,causing a wide-tunable fluorescent *** excited state behaviors of two compounds in blending system was further investigated by the transient absorption(TA)***,we found supramolecular coordination blending can effectively improve the films photoluminescence quantum yield(PLQY)and *** believe this exploration in the internal coordination mechanisms would deepen the insights about doped semiconductors and is helpful in developing novel high-efficient fluorescent systems.
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