TY - JOUR
T1 - Strongly Photosensitive and Fluorescent F8T2 Electrospun Fibers
AU - Ferreira, Isabel Maria Mercês
AU - Baptista, Ana Catarina
AU - Leitão, Joaquim Pratas
AU - Soares, Jorge
AU - Fortunato, Elvira Maria Correia
AU - Martins, Rodrigo Ferrão de Paiva
AU - Borges, João Paulo Miranda Ribeiro
N1 - The authors acknowledge Dr. Paulo Lemos for the microscopy images. This work was supported by FCT-MEC through Strategic Project PEst-C/CTM/LA0025/2011. Ana Catarina Baptista also acknowledges FCT-MEC for the doctoral grant SFRH/BD/69306/2010.
PY - 2013
Y1 - 2013
N2 - Electrospun fibers of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-bithiophene] (F8T2) with exceptional electro-optical performance are obtained. The I/T characteristics measured in fibers with 715 mu m diameter and 1mm length show a semiconductor behavior; their thermal activation energy is 0.5eV and the dark conductivity at RT is 5x109 (cm)1. Besides exhibiting a photosensitivity of about 60 under white light illumination with a light power intensity of 25mW center dot cm2, the fibers also attain RT photoluminescence in the cyan, yellow, and red wavelength range under ultraviolet, blue, and green light excitation, respectively. Optical microscope images of F8T2 reveal homogeneous electrospun fibers, which are in good agreement with the uniformly radial fluorescence observed.
AB - Electrospun fibers of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-bithiophene] (F8T2) with exceptional electro-optical performance are obtained. The I/T characteristics measured in fibers with 715 mu m diameter and 1mm length show a semiconductor behavior; their thermal activation energy is 0.5eV and the dark conductivity at RT is 5x109 (cm)1. Besides exhibiting a photosensitivity of about 60 under white light illumination with a light power intensity of 25mW center dot cm2, the fibers also attain RT photoluminescence in the cyan, yellow, and red wavelength range under ultraviolet, blue, and green light excitation, respectively. Optical microscope images of F8T2 reveal homogeneous electrospun fibers, which are in good agreement with the uniformly radial fluorescence observed.
KW - fluorescence
KW - F8T2
KW - photosensitivity
KW - electrospun fibers
KW - polythiophenes
KW - electrospun fibers
KW - F8T2
KW - fluorescence
KW - photosensitivity
KW - polythiophenes
U2 - 10.1002/mame.201200009
DO - 10.1002/mame.201200009
M3 - Article
SN - 1438-7492
VL - 298
SP - 174
EP - 180
JO - Macromolecular Materials And Engineering
JF - Macromolecular Materials And Engineering
IS - 2
ER -