Visible−Near Infrared Absorbing Dithienylcyclopentadienone−Thiophene Copolymers for Organic Thin-Film Transistors
摘要:
Structural design, synthesis, and characterization of a series of organic semiconductors consisting exclusively of dithienylcyclopentadienone subunits within a polythiophene backbone are described as the first example for organic electronic devices. The donor (thiophene)-alt-acceptor (cyclopentadienone) copolymers exhibit a substantial p-carrier mobility in OFET but an unexpected noncorrelation between absorption and photoconductivity.
Diels–Alder Reaction of Isobenzofurans/Cyclopentadienones with Tetrathiafulvalene: Preparation of Naphthalene, Fluoranthene, and Fluorenone Derivatives
作者:Jayachandran Karunakaran、Arasambattu K. Mohanakrishnan
DOI:10.1021/acs.orglett.7b03686
日期:2018.2.16
Diels–Alder reaction of 1,3-diarylbenzo[c]furan/cyclopentadienone with TTF followed by triflic acid mediated cleavage of the resulting adducts led to the formation of the respective 1,4-diaryl substituted naphthalenes, fluoranthenes, and fluorenones. The photophysical properties of representative diaryl-substituted hydrocarbons are also reported.
1,3-二芳基苯并[ c ]呋喃/环戊二烯酮与TTF的Diels-Alder反应,然后由三氟乙酸介导裂解所生成的加合物,从而形成各自的1,4-二芳基取代的萘,荧蒽和芴酮。还报道了代表性的二芳基取代的烃的光物理性质。
Diels–Alder reaction of tetraarylcyclopentadienones with benzo[<i>b</i>]thiophene <i>S</i>,<i>S</i>-dioxides: an unprecedented de-oxygenation <i>vs.</i> sulfur dioxide extrusion
作者:Palani Manikandan、Jayachandran Karunakaran、Elumalai Varathan、Georg Schreckenbach、Arasambattu K Mohanakrishnan
DOI:10.1039/d0cc05842d
日期:——
benzo[b]thiophene dioxides in xylenes at reflux led to the formation of tetra aryl-substituted dibenzothiophene as well as penta aryl-substituted benzene analogues depending on the influence of aryl substituents present on cyclopentadienones. The intermediate dihydrodibenzothiophene-dioxides underwent aromatization either through de-oxygenation or extrusion of sulfur dioxide to furnish substituted dibenzothiophenes
四芳基环戊二烯酮与二甲苯中的苯并[ b ]噻吩二氧化物在回流下的Diels-Alder反应导致四芳基取代的二苯并噻吩以及五芳基取代的苯类似物的形成,具体取决于芳基取代基对环戊二烯的影响。中间体二氢二苯并噻吩二氧化物通过脱氧或挤出二氧化硫进行芳构化,以提供取代的二苯并噻吩或苯。
A Donor–Acceptor–Donor Structured Organic Conductor with S···S Chalcogen Bonding
作者:Monalisa Bai、Sajesh P. Thomas、Ranjith Kottokkaran、Susanta K. Nayak、Praveen C. Ramamurthy、T. N. Guru Row
DOI:10.1021/cg401069y
日期:2014.2.5
A novel thiophene derivative 7,9-di(thiophen-2-yl)-8H-cyclopenta[a]acenaphthylen-8-one (DTCPA) is shown to exhibit high electrical conductivity (1.97 x 10(-2) +/- 0.0018 S/cm at RT) in the crystalline state. The material shows two orders of increase in conductivity from normal solid to single crystalline state. The crystal structure has S center dot center dot center dot S chalcogen bonding, C-H center dot center dot center dot O hydrogen bonding, and pi center dot center dot center dot pi stacking as the major intermolecular interactions. The nature and strength of the S center dot center dot center dot S interactions in this structure have been evaluated by theoretical charge density analysis, and its contribution to the crystal packing quantified by Hirshfeld surface analysis. Further, thermal and morphological characterizations have been carried out, and the second harmonic generation (SHG) efficiency has been measured using the Kurtz-Perry method.
Visible−Near Infrared Absorbing Dithienylcyclopentadienone−Thiophene Copolymers for Organic Thin-Film Transistors
作者:Changduk Yang、Shinuk Cho、Ryan C. Chiechi、Wesley Walker、Nelson E. Coates、Daniel Moses、Alan J. Heeger、Fred Wudl
DOI:10.1021/ja806784e
日期:2008.12.10
Structural design, synthesis, and characterization of a series of organic semiconductors consisting exclusively of dithienylcyclopentadienone subunits within a polythiophene backbone are described as the first example for organic electronic devices. The donor (thiophene)-alt-acceptor (cyclopentadienone) copolymers exhibit a substantial p-carrier mobility in OFET but an unexpected noncorrelation between absorption and photoconductivity.
Importance of the donor unit on fluoranthene for selective detection of nitro aromatic explosives
作者:Kasthuri Selvaraj、Praveen B. Managutti、Sharmarke Mohamed、Satyanarayana Talam、Venkatramaiah Nutalapati
DOI:10.1016/j.jphotochem.2022.114215
日期:2022.12
photophysical properties of M1 and T1 were explored in solution, solid-state and their AIEE phenomenon was studied in THF/water systems. Both the compounds show strong sky-blue emission at 453 nm (M1) and 460 nm (T1). The fluorescence lifetime and quantum yields are varied significantly in the aggregated form. The emissionenhancement ascribed due to restricted intramolecular rotation (RIR) of thiophene/phenyl