Erratum: Correction to bright, color-tunable fluorescent dyes based on π-expanded diketopyrrolopyrroles (Organic Letters (2012) 14:11 (2670-2673) DOI: 10.1021/ol300674v)

Full text of DOI:10.1021/ol5035782

Addition/Correction
pubs.acs.org/OrgLett
Correction to Bright, Color-Tunable Fluorescent Dyes Based
on π‑Expanded Diketopyrrolopyrroles
Marek Grzybowski, Eliza Glodkowska-Mrowka, Tomasz Stoklosa, and Daniel T. Gryko*
Org. Lett. 2012, 14 (11), 2670−2673. DOI: 10.1021/ol300674v
S
* Supporting Information
rong calibration of fluorescence spectrometer at the time
of original emission measurements led to wrong values
W
of fluorescence quantum yields for diketopyrrolopyrroles
described. We present here the correct values obtained during
scrupulous measurements performed with a freshly calibrated
apparatus. We also present slightly corrected absorption and
emission spectra of π-expanded diketopyrrolopyrroles.
Page 2673, Table 2 should read:
Table 2. Spectroscopic Data of Diacetals 2a−f and Products
of Their Electrophilic Cyclizations 3a−f
max
max
λ
λ
Stokes shift
εmax
abs
em
compd solvent
(nm)
(nm)
(cm−1
)
(M−1 cm−1
)
Φfl
a
2a
2b
2c
2d
2e
2f
CHCl3
CHCl3
CHCl3
CHCl3
CHCl3
CHCl3
CHCl3
DMF
495
496
533
493
580
595
593
593
590
592
605
605
575
575
643
645
648
648
538
541
557
524
594
613
597
602
597
602
609
618
578
586
651
658
653
660
1610
1680
810
1200
410
490
110
250
200
280
110
350
90
23000
31000
24000
24000
75000
83000
110000
91000
97000
135000
64000
62000
71000
68000
110000
107000
89000
0.90
0.90
0.70
0.90
0.75
0.75
0.85
0.70
0.80
0.70
0.75
0.62
0.80
0.73
0.99
0.60
0.70
0.50
a
b
a
b
b
c
,
,
c
c
3a
c
Figure S-1. Absorption and normalized fluorescence emission spectra of
π-expanded DPPs measured in CHCl3.
c
3b
3c
3d
3e
3f
CHCl3
DMF
c
c
CHCl3
DMF
c
ASSOCIATED CONTENT
* Supporting Information
■
c
S
CHCl3
DMF
c
330
190
310
120
280
Corrected version of the Supporting Information. This material
is available free of charge via the Internet at http://pubs.acs.org.
d
c
CHCl3
DMF
d
c
CHCl3
DMF
58000
a
b
Φfl reference: fluorescein in 0.1 M NaOH (Φfl = 0.9). Φfl reference:
c
rhodamine 6G in EtOH (Φfl = 0.94). Φfl reference: Cresyl Violet in
MeOH (Φfl = 0.54). Φfl reference: Nile Blue in EtOH (Φfl = 0.27).
d
In the Supporting Information, page 2, Figure S-1 has been
corrected as shown.
Published: January 2, 2015
© 2015 American Chemical Society
394
DOI: 10.1021/ol5035782
Org. Lett. 2015, 17, 394−394