Remote Biosensing with Polychromatic Optical Waveguide Using Blue Light‐Emitting Organic Nanowires Hybridized with Quantum Dots

Abstract

Nanometer-scale optical waveguides are attractive due to their potential applicability in photonic integration, optoelectronic communication, and optical sensors. Nanoscale white light-emitting and/or polychromatic optical waveguides are desired for miniature white-light generators in microphotonic circuits. Here, polychromatic (i.e., blue, green, and red) optical waveguiding characteristics are presented using a novel hybrid composite of highly crystalline blue light-emitting organic nanowires (NWs) combined with blue, green, and red CdSe/ZnS quantum dots (QDs). Near white-color waveguiding is achieved for organic NWs hybridized with green and red QDs. Light, emitted from QDs, can be transferred to the organic NW and then optically waveguided through highly packed π-conjugated organic molecules in the NW with different decay characteristics. Remote biosensing using dye-attached biomaterials is presented by adapting the transportation of QD-emitted light through the organic NW.

Enhancement of photoresponsive electrical characteristics of multilayer MoS2 transistors using rubrene patches

“…The incident laser power on the sample and the acquisition time for each PL spectrum were 10 W and 20 ms, respectively. The detailed methods of the LCM experiment have been previously reported [21]. The photoresponsive electrical characteristics of the devices were measured in vacuum (CTI-Cryogenic cryostat) using a source-measurement unit (SMU) guaranteed for the measurement resolution and accuracy as 10 pA and (0.04% + 60 pA), respectively, (Keithley 237, USA).…”

Fine Fabrication and Optical Waveguide Characteristics of Hexagonal tris(8-hydroxyquinoline)aluminum(Ⅲ) (Alq3) Crystal

“…Organic crystal structures offer unique advantages, such as relatively high electrical performance and good processability, making them complementary to inorganic materials, which have been demonstrated in light-emitting diodes, photovoltaic cells, field-effect transistors, optical waveguides, and lasers [6][7][8][9][10]. In particular, crystalline structures of organic molecules with remarkably improved optoelectronic characteristics are achievable, enabling propagation of emission by active optical waveguiding in a crystal [11][12][13].…”

Bio‐Photonic Waveguide of a DNA‐Hybrid Semiconductor Prismatic Hexagon

“…It is much desired to detect the recognition event even without providing direct optical stimulation to the biomaterials of interest. [ 40 ] In the next stage, we performed remote recognition experiments using the bio‐hybrid Alq3 crystals.…”