2 Squaraine Dyes
45
sensitized solar cells: the effect of π-bridges and anchoring groups on solar cell performance.
Chem Mater 27:2480
Keil D, Hartmann H (2001) Synthesis and characterization of a new class of unsymmetrical squaraine
dyes. Dyes Pigms 49:161
Law K-Y (1993) Organic photoconductive materials: recent trends and developments. Chem Rev
93:449
Law K-Y (1987) Squaraine chemistry: effects of structural changes on the absorption and multiple
fluorescence emission of bis[4-(dimethylamino)phenyl]squaraine and its derivatives. J Phys Chem
91:5184
Law KY (1992) Squaraine chemistry: design, synthesis and xerographic properties of a highly
sensitive unsymmetrical fluorinated squaraine. Chem Mater 4, 605
Law
KY,
Bailey
FC
(1986)
Sqararaine
chemistry:
Synthesis
of
bis(4dimethylaminophenyl)squaraince from dialkyl squarates. Mechanism and scope of the synthesis.
Can J Chem 64, 2267
Liebeskind LS, Fengl RW (1990) 3-stannylcyclobutenediones as nucleophilic cyclobutenedione
equivalents. synthesis of substituted cyclobutenediones and cyclobutenedione monoacetals and
the beneficial effect of catalytic copper iodide on the stille reaction. J Org Chem 55, 5359
Liebeskind LS, Fengl RW, Wirtz KR, Shawe TT (1988) An improved method for the synthesis of
substituted cyclobutenediones. J Org Chem 53:2482
Liu T, Liu X, Valencia MA, Sui B, Zhang Y, Belfield KD (2017) Far-red-emitting TEG-substituted
squaraine dye: synthesis, optical properties, and selective detection of cyanide in aqueous solution.
Eur J Org Chem 3957
Li J-Y, Chen C-Y, Lee C-P, Chen S-C, Lin T-H, Tsai H-H, Ho K-C, Wu C-G (2010) Unsymmetrical
squaraines incorporating the thiophene unit for panchromatic dye-sensitized solar cells. Org Lett
12:5454
Maahs G, Hegengerg P (1966) Syntheses and derivatives of squaric acid. Angew Chem Int Ed 5:888
Maeda T, Shima N, Tsukamoto T, Yagi S, Nakazumi H (2011a) Unsymmetrical squarylium dyes
with π-extended heterocyclic components and their application to organic dye-sensitized solar
cells. Synth Met 161:2481
Maeda T, Hamamura Y, Miyanaga K, Shima N, Yagi S, Nakazumi H (2011b) Near-infrared
absorbing squarylium dyes with linearly extended π-conjugated structure for dye-sensitized solar
cell applications. Org Lett 13:5994
Maeda T, Tsukamoto T, Seto A, Yagi S, Nakazumi H (2012) Synthesis and characterization of
squaraine-based conjugated polymers with phenylene linkers for bulk heterojunction solar cells.
Macromol Chem Phys 213, 2590
Maeda T, Arikawa S, Nakao H, Yagi S, Nakazumi H (2013) Linearly π-extended squaraine dyes
enable the spectral response of dye-sensitized solar cells in the NIR region over 800 nm. New J
Chem 37:701
Maeda T, Mineta S, Fujiwara H, Nakao H, Yagi S, Nakazumi H (2013) Conformational effect of
symmetrical squaraine dyes on the performance of dye-sensitized solar cells. J Mater Chem A 1,
1303
Maeda T, Nguyen TV, Kuwano Y, Chen X, Miyanaga K, Nakazumi H, Yagi S, Soman S, Ajayaghosh
A (2018) Intramolecular exciton-coupled squaraine dyes for dye-sensitized solar cells. J Phys
Chem C 122:21745
Mayerhöffer U, Deing K, Gruß H, Braunschweig K, Meerholz F. Würthner (2009) Outstanding
short-circuit currents in BHJ solar cells based on NIR-absorbing acceptor-substituted squaraines.
Angew Chem Int Ed 48, 8776
Mayerhöffer U, Würthner F (2012) Cooperative self-assembly of squaraine dyes. Chem Sci 3:1215
Mayerhöffer U, Gsänger M, Stolte M, Fimmel B, Würthner F (2013) Synthesis and molecular
properties of acceptor-substituted squaraine dyes. Chem Eur J 19:218
McEwen JJ, Wallace KJ (2009) Squaraine dyes in molecular recognition and self-assembly. Chem
Commun 6339
45
sensitized solar cells: the effect of π-bridges and anchoring groups on solar cell performance.
Chem Mater 27:2480
Keil D, Hartmann H (2001) Synthesis and characterization of a new class of unsymmetrical squaraine
dyes. Dyes Pigms 49:161
Law K-Y (1993) Organic photoconductive materials: recent trends and developments. Chem Rev
93:449
Law K-Y (1987) Squaraine chemistry: effects of structural changes on the absorption and multiple
fluorescence emission of bis[4-(dimethylamino)phenyl]squaraine and its derivatives. J Phys Chem
91:5184
Law KY (1992) Squaraine chemistry: design, synthesis and xerographic properties of a highly
sensitive unsymmetrical fluorinated squaraine. Chem Mater 4, 605
Law
KY,
Bailey
FC
(1986)
Sqararaine
chemistry:
Synthesis
of
bis(4dimethylaminophenyl)squaraince from dialkyl squarates. Mechanism and scope of the synthesis.
Can J Chem 64, 2267
Liebeskind LS, Fengl RW (1990) 3-stannylcyclobutenediones as nucleophilic cyclobutenedione
equivalents. synthesis of substituted cyclobutenediones and cyclobutenedione monoacetals and
the beneficial effect of catalytic copper iodide on the stille reaction. J Org Chem 55, 5359
Liebeskind LS, Fengl RW, Wirtz KR, Shawe TT (1988) An improved method for the synthesis of
substituted cyclobutenediones. J Org Chem 53:2482
Liu T, Liu X, Valencia MA, Sui B, Zhang Y, Belfield KD (2017) Far-red-emitting TEG-substituted
squaraine dye: synthesis, optical properties, and selective detection of cyanide in aqueous solution.
Eur J Org Chem 3957
Li J-Y, Chen C-Y, Lee C-P, Chen S-C, Lin T-H, Tsai H-H, Ho K-C, Wu C-G (2010) Unsymmetrical
squaraines incorporating the thiophene unit for panchromatic dye-sensitized solar cells. Org Lett
12:5454
Maahs G, Hegengerg P (1966) Syntheses and derivatives of squaric acid. Angew Chem Int Ed 5:888
Maeda T, Shima N, Tsukamoto T, Yagi S, Nakazumi H (2011a) Unsymmetrical squarylium dyes
with π-extended heterocyclic components and their application to organic dye-sensitized solar
cells. Synth Met 161:2481
Maeda T, Hamamura Y, Miyanaga K, Shima N, Yagi S, Nakazumi H (2011b) Near-infrared
absorbing squarylium dyes with linearly extended π-conjugated structure for dye-sensitized solar
cell applications. Org Lett 13:5994
Maeda T, Tsukamoto T, Seto A, Yagi S, Nakazumi H (2012) Synthesis and characterization of
squaraine-based conjugated polymers with phenylene linkers for bulk heterojunction solar cells.
Macromol Chem Phys 213, 2590
Maeda T, Arikawa S, Nakao H, Yagi S, Nakazumi H (2013) Linearly π-extended squaraine dyes
enable the spectral response of dye-sensitized solar cells in the NIR region over 800 nm. New J
Chem 37:701
Maeda T, Mineta S, Fujiwara H, Nakao H, Yagi S, Nakazumi H (2013) Conformational effect of
symmetrical squaraine dyes on the performance of dye-sensitized solar cells. J Mater Chem A 1,
1303
Maeda T, Nguyen TV, Kuwano Y, Chen X, Miyanaga K, Nakazumi H, Yagi S, Soman S, Ajayaghosh
A (2018) Intramolecular exciton-coupled squaraine dyes for dye-sensitized solar cells. J Phys
Chem C 122:21745
Mayerhöffer U, Deing K, Gruß H, Braunschweig K, Meerholz F. Würthner (2009) Outstanding
short-circuit currents in BHJ solar cells based on NIR-absorbing acceptor-substituted squaraines.
Angew Chem Int Ed 48, 8776
Mayerhöffer U, Würthner F (2012) Cooperative self-assembly of squaraine dyes. Chem Sci 3:1215
Mayerhöffer U, Gsänger M, Stolte M, Fimmel B, Würthner F (2013) Synthesis and molecular
properties of acceptor-substituted squaraine dyes. Chem Eur J 19:218
McEwen JJ, Wallace KJ (2009) Squaraine dyes in molecular recognition and self-assembly. Chem
Commun 6339