Supporting Information for:
Blue-Shift of Photoluminescence Induced by Coupling Effect
of a Nanohybrid Composed of Fluorophore-Phenothiazine
Derivative and Gold Nanoparticles
Lin Kong, Jia-xiang Yang, Qi-yu Chen, Qiong Zhang, Wen-dong Ke, Zhao-ming Xue, Hong-ping
Zhou, Jie-ying Wu, Bao-kang Jin, Yu-peng Tian
Contents
1. Preparation of Intermediate a~b
2. SEM images of L nanocrystals obtained from the other two solutions
3. SEM micrograph of the mixture physically mixed L belts and Au NPs
4. Calculated excitation energies (E), oscillator strengths (f), corresponding wavelengths (λabs)
and major contributors for L
To synthesize intermediate a, phenothiazine (0.4 g, 2 mmol), ethyl bromide (0.33 g, 3 mmoL)
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and NaH (0.07 g, 3 mmoL) were mixed in round-bottom flask. The mixture was stirred at 140 °C
for about 24 h. The solvent was evaporated to get intermediate a.
Then, intermediate a (0.12 g, 5 mmol), triphenylphosphine (10 mL) were dissolved in DMF (15
mL) in ice-water bath. Then, the mixture was stirred at 80 ºC for 1 h, cooled to room temperature,
poured into ice water (50 mL) and light-yellow solid was deposited. The soilid was extract with
ethyl acetate (150 mL  4). The organic layer was combined, washed with water and dried over
MgSO4. The solvent was evaporated and the residue was purified by column chromatograph of
silica gel with petroleum ether/ethyl acetate (3:1) as the eluent to obtain intermediate b as a yellow
solid in yield 64%.
Fig. S1 SEM of L belts obtained from DMF solution
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Fig. S2 SEM of L rods obtained from EtOH solution
Fig. S3 SEM micrograph of the mixture physically mixed L belts and Au NPs
Table S1 Calculated excitation energies (E), oscillator strengths (f), corresponding wavelengths
(λabs) and major contributors for L
Comp.
E(eV)
2.6789*
3.6597
λabs(nm)
462.83
338.79
f
0.2836
0.0184
3.8939*
4.2886
318.41
289.11
0.2593
0.0010
L
* main transition
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Nature of Transitions (C)
HOMO→LUMO (0.63936)
HOMO-1→LUMO (0.58473)
HOMO→LUMO+1 (0.32631)
HOMO→LUMO+1 (0.58748)
HOMO-3→LUMO (0.20886)
HOMO→LUMO+2 (0.62827)
Fig. S4 UV-vis absorption spectrum of L-Au nanohybrid when the ratio of L to Au was 1:10
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Graphic abstract for:
Blue-Shift of Photoluminescence Induced by Coupling Effect
of a Nanohybrid Composed of Fluorophore-Phenothiazine
Derivative and Gold Nanoparticles
Lin Kong, Jia-xiang Yang, Qi-yu Chen, Qiong Zhang, Wen-dong Ke, Zhao-ming Xue,
Hong-ping Zhou, Jie-ying Wu, Bao-kang Jin, Yu-peng Tian
A D-π-A type phenothiazine derivative (L) was synthesized and used to prepare nanohybrid
with Au NPs. L molecules coupled with Au NPs through S atoms, which brought about significant
blue-shift of the fluorescence and an obvious increase of FL lifetime.
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