Low-temperature formation of self-assembled 1,5-diaminoanthraquinone nanofibers: Substrate effects and field emission characteristics

Experimental and theoretical investigation of enhanced cold cathode emission by plasma-etched 3d array of nanotips derived from CuPc nanotube

“…The eld emission characteristics are shown in the Fig. [10][11][12][13][14][21][22][23][24][25][26] These values are also comparable various tube like eld emitter such as B-C-N microtube, Fe doped TiO 2 nanotube, ZnO nanotubes, boron nanotubes and carbon nanotubes. The turn-on eld and threshold eld in the case of CuPc nanotube was obtained 6.8 and 8.4 V mm À1 respectively, which get down-shied to 4.2 and 6.5 V mm À1 for the P-CuPc nanotips respectively.…”

“…Inspired by this speculated array of exciting features, several groups have focused their attentions to design excellent cold cathode emitting materials. Field emission properties of others kind of organic nanostructures such as CuTCNQ (TCNQ ¼ tetracyanoquinodimethane) nanotube, Cu-TCNAQ (TCNAQ ¼ tetracyanoanthraquinodimethane) nanowires, CuTCNQ nanorod, Alq3{Tris(8-hydroxyquinoline)-aluminium} nanowires, PTCDA (3,4,9,10- 17,[21][22][23][24][25][26] Even then until now there is no report in the literature on high quality, uniform 3D out of plane nanotips arrays over a base morphology where both materials acts as a eld emitter and there are few reports of organic eld emitters which have turn-on eld less than $5 V mm À1 (dened current density@10 mA cm À2 ). Such inorganic nanostructures, in spite of their excellent eld emission characteristics, possess several drawbacks such as high temperature processing and expensive deposition system.…”

Self-assembled coronene nanofiber arrays: toward integrated organic bioelectronics for efficient isolation, detection, and recovery of cancer cells

“…For example, the in-plane morphologies (planar structures) of small-molecule thin lms have been exploited widely in organic light emitting diodes (OLEDs) and organic eldeffect transistors (OFETs), 9 while out-of-plane three-dimensional (3D) morphologies [nanober (NF) arrays] of active layers have been generally developed for organic photovoltaics (OPVs) and organic eld emitters. [10][11][12][13][14] Although the use of organic small molecule (OSM) semiconductors as device active layers has been examined for the development of organic bioelectronics, [15][16][17] practical examples of their applications in cell-based bioelectronics have been very rare, due to the lack of reliable techniques for controlling the 3D morphologies of OSM thin lms and for regulating cell-matrix interactions at the device level.…”

Growth methods, enhanced photoluminescence, high hydrophobicity and light scattering of 4,4′-bis(1,2,2-triphenylvinyl)biphenyl nanowires

“…As the quantum size effect of nanostructured materials may induce new optical, electronic, magnetic and mechanical properties compared with those of conventional materials, nanotechnology has become a subject of intensive study in recent years. Among the nanostructured materials, one dimensional (1D) organic nanostructures like nanowires, nanorods, nanoneedles, nanotubes and nanobelts attracted considerable interest recently due to their milder growth conditions such as low-temperature and catalyst-free, compared with those of their inorganic counterparts [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. With their novel structural, optical and electronic properties, the facilely grown 1D organic nanostructures have found potential applications in solar cells [1,2], field emitters [3][4][5][6][7][8][9], chemical sensors [10], hydropho-bic surfaces, etc [11,12].…”

“…Several small molecular organic materials that were used to grow 1D nanostructures have been reported recently. For example, 1D nanostructures of copper phthalocyanine (CuPc) [1,2,17], 1,5-diaminoanthraquinone (DAAQ) [3,10], tris(8-hydroxyquinolinato)aluminum (Alq 3 ) [5,6,[13][14][15][16], metal-tetracyanoquinodimethane (TCNQ) [7][8][9], anthracene (AN) and perylene (PY) [18] have been successfully obtained using a wide range of growth methods such as vacuum sublimation [1,3,4], vapor condensation under Ar atmosphere [5,6], physical vapor deposition [2,7,8,13] or solution processing [9,14]. 4,4 0 -bis(1,2,2-triphenylvinyl)biphenyl (BTPE), a luminogenic molecule that emits efficiently in its solid state with fluorescent efficiency reaching unity, has been employed as a bluish-green emitter and host for organic lightemitting diodes (OLEDs) recently [19,20].…”