Tremendous progress has been made on aromatic fusion of acenaphthylene towards organic semiconductors.However,scarce studies focus on the functionalization of acenaphthylene without resort to aromatic extension,althou...Tremendous progress has been made on aromatic fusion of acenaphthylene towards organic semiconductors.However,scarce studies focus on the functionalization of acenaphthylene without resort to aromatic extension,although vinylene double bond is highly reactive ascribed to the ring strain of the fused cyclopentene.Herein,for the first time we employ copper-promoted domino cyanation/Ullmann coupling to achieve a series of difunctionalized acenaphthylene imides(ANIs)with varied optoelectronic properties.Both Ullmann homocoupling and crosscoupling can be combined with cyanation for difunctionalization of ANIs.The introduction of cyano groups influences oppositely not only the energy levels but also the antiaromaticity of the fivemembered rings in ANIs relative to the dimethylamino substituent due to the electron donating or withdrawing effects.By altering the functional units,the optical and electrical characteristics have been tailored rationally;thus p,n or ambipolar semiconducting properties can be achieved for the ANI derivatives.This article opens up possibilities to the development of organic semiconducting materials based on ANIs without aromatic extension,which is promising for applications in organic electronics.展开更多
The organic single-crystal field-effect transistors using anthracene derivative, H-Ant as an active layer with source/drain electrodes decorated by metal charge transfer salt(Cu TCNQ) were fabricated. We demonstrated ...The organic single-crystal field-effect transistors using anthracene derivative, H-Ant as an active layer with source/drain electrodes decorated by metal charge transfer salt(Cu TCNQ) were fabricated. We demonstrated that this bottom-contact structure displayed an obvious improvement in the electrical characteristics relative to their pristine copper and top-contact gold electrode counterparts. This observation could be ascribed to the lower contact resistance resulting from the energetic match between electrodes and semiconductor.展开更多
A novel semiconductor, dihexyl-substituted pentathienoacene(C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with a...A novel semiconductor, dihexyl-substituted pentathienoacene(C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with about threefold increase in carrier mobility and one to three orders of magnitude improvement in current on/off ratio. Furthermore, single crystal FETs based on C6-PTA exhibited mobility up to 0.64 cm^2 V^(-1) s^(-1), which is over 50 times higher than the thin film counterpart. The results indicate clearly that C6-PTA is a promising organic semiconductor with high stability.展开更多
The physical and chemical properties of organic semiconductors are closely related to their aggregation structure. Tuning of aggregation structure and electrical property is important for the application in organic el...The physical and chemical properties of organic semiconductors are closely related to their aggregation structure. Tuning of aggregation structure and electrical property is important for the application in organic electronics. In this study, a facile way to tune the aggregation structure and electrical property of 2.6-diphenyl-anthracene(DPA) is realized by using the octadecyltrichlorosilane(OTS) modification layer with different density which is fabricated by controlling reaction temperature and time.Compared with low density OTS, DPA forms larger grain size, less grain boundaries, and better molecular ordering on high density OTS surface. As a result, the charge transporting mobility of DPA film on high density OTS surface is about two orders of magnitude higher than that on low density OTS surface. The tunable aggregation structure and electrical property of DPA demonstrated here would be meaningful for the application of DPA in organic electronics.展开更多
In this article,an acid-responsive luminescent material,1,4-di(quinoline-6-yl)buta-1,3-diyne(DQBD)is designed and synthesized.Upon different pH values,gradual changes of fluorescence colors for DQBD in both solution a...In this article,an acid-responsive luminescent material,1,4-di(quinoline-6-yl)buta-1,3-diyne(DQBD)is designed and synthesized.Upon different pH values,gradual changes of fluorescence colors for DQBD in both solution and solid phases are demonstrated due to the protonation effect.Moreover,such responsive characteristics can also be reversible,suggesting DQBD as a promising fluorescent material with great potential for reusable-and accurate-p H sensors in the future.展开更多
基金supported by the Fundamental Research Funds for the Central Universities(buctrc202103,buctrc202128)the National Natural Science Foundation of China(21975263,22171019,52103200)+4 种基金SINOPEC(222131)the Open Project Program of Wuhan National Laboratory for Optoelectronics(2021WNLOKF005)the State Key Laboratory of Fine Chemicals(KF2201,Dalian University of Technology)the State Key Laboratory of Luminescent Materials and Devices(2022skllmd-14)the State Key Laboratory of Supramolecular Structure and Materials(SKLSSM2022036)。
文摘Tremendous progress has been made on aromatic fusion of acenaphthylene towards organic semiconductors.However,scarce studies focus on the functionalization of acenaphthylene without resort to aromatic extension,although vinylene double bond is highly reactive ascribed to the ring strain of the fused cyclopentene.Herein,for the first time we employ copper-promoted domino cyanation/Ullmann coupling to achieve a series of difunctionalized acenaphthylene imides(ANIs)with varied optoelectronic properties.Both Ullmann homocoupling and crosscoupling can be combined with cyanation for difunctionalization of ANIs.The introduction of cyano groups influences oppositely not only the energy levels but also the antiaromaticity of the fivemembered rings in ANIs relative to the dimethylamino substituent due to the electron donating or withdrawing effects.By altering the functional units,the optical and electrical characteristics have been tailored rationally;thus p,n or ambipolar semiconducting properties can be achieved for the ANI derivatives.This article opens up possibilities to the development of organic semiconducting materials based on ANIs without aromatic extension,which is promising for applications in organic electronics.
基金financial support from the Ministry of Science and Technology of China (2017YFA0204503 and 2016YFB0401100)the National Natural Science Foundation of China (51725304, 51633006, 51703159, 51733004 and 21875259)+1 种基金the Strategic Priority Research Program (XDB12030300)the Chinese Academy of Sciences and the National Program for Support of Top-notch Young Professionals
基金supported by the National Natural Science Foundation of China(20721061,51033006,51003107,91027043)the China-Denmark Co-project,TRR61(NSFC-DFG Transregio Project)the National Basic Research Program of China(2011CB808400,2011CB932300,2009CB930400)and Chinese Academy of Sciences
文摘The organic single-crystal field-effect transistors using anthracene derivative, H-Ant as an active layer with source/drain electrodes decorated by metal charge transfer salt(Cu TCNQ) were fabricated. We demonstrated that this bottom-contact structure displayed an obvious improvement in the electrical characteristics relative to their pristine copper and top-contact gold electrode counterparts. This observation could be ascribed to the lower contact resistance resulting from the energetic match between electrodes and semiconductor.
基金financial support from the Ministry of Science and Technology of China (Nos. 2015CB856502, 2016YFB0401100 and 2017YFA0204503)the National Natural Science Foundation of China (Nos. 51733004, 51822308, 51725304, 51633006, 21661132006)+2 种基金the Strategic Priority Research Program (No. XDB12000000)the Youth Innovation Promotion Association of the Chinese Academy of Sciences, Startup Foundation for Doctors of China West Normal University (No. 15E007)Open Foundation of Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province (No. CSPC2015-1-1)
文摘A novel semiconductor, dihexyl-substituted pentathienoacene(C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with about threefold increase in carrier mobility and one to three orders of magnitude improvement in current on/off ratio. Furthermore, single crystal FETs based on C6-PTA exhibited mobility up to 0.64 cm^2 V^(-1) s^(-1), which is over 50 times higher than the thin film counterpart. The results indicate clearly that C6-PTA is a promising organic semiconductor with high stability.
基金supported by the National Natural Science Foundation of China (51303185, 21021091, 51033006, 51222306, 51003107, 61201105, 3591027043, 91222203, 91233205, 21473222 and 21773040)the Ministry of Science and Technology of China (2011CB808400, 2011CB932300, 2013CB933403, 2013CB933500 and 2014CB643600)the Chinese Academy of Sciences (Y42D0A12D1 and Y42D0412D1)。
基金supported by the National Natural Science Foundation of China(21573277)Chinese Academy of Sciences
文摘The physical and chemical properties of organic semiconductors are closely related to their aggregation structure. Tuning of aggregation structure and electrical property is important for the application in organic electronics. In this study, a facile way to tune the aggregation structure and electrical property of 2.6-diphenyl-anthracene(DPA) is realized by using the octadecyltrichlorosilane(OTS) modification layer with different density which is fabricated by controlling reaction temperature and time.Compared with low density OTS, DPA forms larger grain size, less grain boundaries, and better molecular ordering on high density OTS surface. As a result, the charge transporting mobility of DPA film on high density OTS surface is about two orders of magnitude higher than that on low density OTS surface. The tunable aggregation structure and electrical property of DPA demonstrated here would be meaningful for the application of DPA in organic electronics.
基金the Ministry of Science and Technology of China(Nos.2017YFA0204503,2016YFB0401100)the National Natural Science Foundation of China(Nos.21875259,51725304,51633006,61890943,91833306,51822308,21975263)the Strategic Priority Research Program(No.XDB12030300)of the Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences(No.BNLMS-CXXM-202012)。
文摘In this article,an acid-responsive luminescent material,1,4-di(quinoline-6-yl)buta-1,3-diyne(DQBD)is designed and synthesized.Upon different pH values,gradual changes of fluorescence colors for DQBD in both solution and solid phases are demonstrated due to the protonation effect.Moreover,such responsive characteristics can also be reversible,suggesting DQBD as a promising fluorescent material with great potential for reusable-and accurate-p H sensors in the future.
