Photoconductivity of Self-Assembled Nanotapes Made from meso-Tri(4-sulfonatophenyl)monophenylporphine

Photoconductivity of Self-Assembled Nanotapes Made from meso-Tri(4-sulfonatophenyl)monophenylporphine

meso-Tri(4-sulfonatophenyl)monophenylporphine (TPPS3) has one fewer sulfonate group than meso-tetra(4-sulfonatophenyl)porphine (TPPS4), which has been shown to form well-defined, photoelectronically active nanorods. TPPS3, when deposited via immersion and spin-drying, forms tapelike aggregates of tw...

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Veröffentlicht in:Journal of physical chemistry. C 2008-02, Vol.112 (6), p.2170-2176
Hauptverfasser: Yeats, Andrew L, Schwab, Alexander D, Massare, Brittany, Johnston, Danvers E, Johnson, Alan T, de Paula, Julio C, Smith, Walter F
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container_end_page 2176
container_issue 6
container_start_page 2170
container_title Journal of physical chemistry. C
container_volume 112
creator Yeats, Andrew L
Schwab, Alexander D
Massare, Brittany
Johnston, Danvers E
Johnson, Alan T
de Paula, Julio C
Smith, Walter F
description meso-Tri(4-sulfonatophenyl)monophenylporphine (TPPS3) has one fewer sulfonate group than meso-tetra(4-sulfonatophenyl)porphine (TPPS4), which has been shown to form well-defined, photoelectronically active nanorods. TPPS3, when deposited via immersion and spin-drying, forms tapelike aggregates of two distinct heights. The larger width of these nanotapes (compared to TPPS4 nanorods) is expected from the smaller charge of the monomer when it is dissolved in acidic solution. The deposition of nanotapes onto a substrate can be patterned to a limited extent by scratching the substrate prior to aggregation. The nanotapes exhibit photoconductive properties very similar to those of TPPS4 nanorods, including growth of photoconductivity over hundreds of seconds, as well as photovoltaic activity with trainable polarity. However, they show a stronger memory of the slow growth of photoconductivity. The quantum efficiency of photoconductivity is approximately 10 times lower than that for TPPS4 nanorods.
doi_str_mv 10.1021/jp0765695
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title Photoconductivity of Self-Assembled Nanotapes Made from meso-Tri(4-sulfonatophenyl)monophenylporphine
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