SUPPORTING INFORMATION
for
NITRO AROMATIC COMPOUND SENSING APPLICATION OF HEXAARMED DANSYL END-CAPPED POLY(-CAPROLACTONE) STAR
POLYMER WITH PHOSPHAZENE CORE
Merve Dandan Doganci1*, Sümeyra Bayir2, Erdinc Doganci1, Mesut Gorur3, Faruk
Yilmaz2*
Department of Chemistry and Chemical Processing Tech., Kocaeli University, Kocaeli,
Turkey
2
Department of Chemistry, Gebze Technical University, Kocaeli, Turkey
3
Department of Chemistry, Istanbul Medeniyet University, Istanbul, Turkey
1
* Corresponding authors. Merve Dandan Doganci, e-mail: [email protected];
tel: +902623732802-122.
Faruk Yilmaz, e-mail: [email protected]; tel: +902626053089-149.
Synthesis of Hexa-Armed PCL Star Polymer with OH Functional End Units (N 3P3(PCL-OH)6)
N3P3-(OC6H4-p-CH2OH)6 and
(N3P3-(PCL-OH)6)
was synthesized
using
the method
reported in the literature [29].
Tin(II) 2-ethylhexanoate (Sn(Oct)2) (0.0487 g, 0.120 mmol) and N3P3-(OC6H4-p-CH2OH)6
(0.1 g, 0.114 mmol) was added to a fire dried polymerization tube. Then, ε -CL (2.743 g,
24.035 mmol) was added and the mixture was stirred at 115 °C for 24 h under argon
atmosphere until a clear solution was obtained. Then, after cooling the mixture to room
temperature, the raw product as dissolved in dichloromethane (3 mL) and isolated by
precipitating in cold methanol. N3P3-(PCL-OH)6 was filtered and dried under high vacuum
at ambient temperature until a constant weight.
Yield: 2.607 g (91.4%). Mn,NMR: 22,789 g/mol; Mn,GPC:18,700 g/mol; Mw/Mn: 1.30. FTIR
(cm-1): 3355 (O-H, weak, broad); 2944 (C-H), 2866 (C-H); 1722 (C=O); 1470 (C-H);
1240 ((C=O) AO); 1168 (P=N); 1046 (C-O-C); 958 (P-O-Ph); 732 (P-N). 1H-NMR (CDCl3,
d, ppm): 7.18, 7.16 and 6.92, 6.90 (AA BB pattern, C6H4 in phosphazene core); 5.05 (s,
C6H4CH2O); 4.06 (m, CH2OC(O) in PCL); 3.65 (t, terminal CH2OH in PCL); 2.30 (m,
OC(O)CH2
in
PCL),
1.65
(m,
C(O)CH2CH2CH2CH2CH2OC(O)
in
PCL),
1.38
(m,C(O)CH2CH2CH2CH2CH2OC(O) in PCL).
Synthesis of Hexa-Armed PCL Star Polymer with Dansyl Functional End Units
(N3P3-(PCL-Dansyl)6)
N3P3-(PCL-OH)6 (Mn,NMR=22,789 g/mol, 0.5 g, 0.0219 mmol) was dissolved in dry
dichloromethane (10 mL) under an oxygen-free argon atmosphere. After triethylamine
(0.027 g, 0.263 mmol) was added, the solution was cooled to -10°C using an ice–NaCl
mixture. Dansyl chloride (0.053 g, 0.197 mmol) in anhydrous dichloromethane (10 mL)
was added dropwise to the mixture within 20 min. Then, the cooling ice–NaCl bath was
removed and the mixture was allowed to attain room temperature for 48 h with
continuous stirring. The solution was concentrated to about 5 mL by rotary evaporator
and the resulting polymer (N3P3-(PCL-Dansyl)6) was isolated by precipitating in cold
methanol. N3P3-(PCL-Dansyl)6 was filtered and dried under high vacuum at ambient
temperature until a constant weight.
Yield: 0.457 g (86.2%). Mn,NMR: 24,188 g/mol; Mn,GPC: 19,800 g/mol; Mw/Mn: 1.29. FTIR
(cm-1): 2946 (C-H), 2866 C-H); 1722 (C=O); 1471 (C-H); 1240 ((C=O) -O); 1176
(P=N); 1046 (C-O-C); 960 (P-O-Ph); 732 (P-N). 1H-NMR (CDCl3, d, ppm): 8.60, 8.25,
7.56, 7.43, and 7.00 (CH, in dansyl moiety); 7.18, 7.16 and 6.92, 6.90 (AABB pattern,
C6H4 in phosphazene core); 5.05 (s, C6H4CH2O); 4.05 (m, CH2OC(O) in PCL a); 2.88 (s, N(CH3)2,
in
dansyl
moiety);
2.30
(m,
O(CO)CH 2
in
PCL),
1.64
COCH2CH2CH2CH2CH2O(CO) in PCL), 1.38 (m,COCH2CH2CH2CH2CH2O(CO) in PCL).
(m,
Figure 1. FTIR spectrum of N3P3-(PCL-OH)6.
Figure 2. FTIR spectrum of N3P3-(PCL-Dansyl)6.
Figure 3. 1H NMR spectrum of N3P3-(PCL-OH)6 in CDCl3 at room temperature.
Figure 4. 1H NMR spectrum of N3P3-(PCL-Dansyl)6 in CDCl3 at room temperature.