Selective growth and enhanced field emission properties of micropatterned iron phthalocyanine nanofiber arrays

Growth and modelling of spherical crystalline morphologies of molecular materials

“…Yao and colleagues 8 , for instance, have demonstrated the growth of single-crystal tris(8-hydroxyquinoline)aluminum (Alq 3 ) nanowires using adsorbent-assisted physical vapour deposition, where the degree of saturation of Alq 3 can be controlled via adsorbents in the vapour phase. Huang et al 15 developed a method for the micropatterned growth of iron phthalocyanine (FePc) nanofibre arrays using VTE by controlling the surface energy and temperature of the substrate, where a grainlike (in-plane) morphology was obtained on Si surfaces (higher surface energy) and a fibre-like (out-of-plane) morphology was obtained on silver surfaces (lower surface energy) within a certain range of substrate temperatures. Chiu et al 3 have used a vapour condensation method for the growth of Alq 3 nanowires.…”

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

“…1(h). Some of the wires can even stand vertically onto the glass/Au substrate, rendering them to be suitable for serving as field emitters [3][4][5][6][7][8][9].…”

“…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].…”

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.…”