Chemistry Letters · 140 New Organic Sensitizers with N-Substituted or Nonsubstituted PyrroleUnits for Dye-sensitized Solar Cells hν N N CN R n O O n=1~2 R = H, Me, Bu, Oct, Dod
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94 Heterocyclic CarbeneMetal-catalyzed Csp2Csp2 and CspCsp2 Couplings Using Non-metallic Substrates
HR3
R2
R4
HR2
+R1 NHC-Metalcomplex
XR1
R3
R2 R4
R1
R2or
Miguel Yus* and Isidro M. Pastor*doi:10.1246/cl.2013.94
The use of carbene ligands for transition-metal complexes has been developed in the last decades, being of special interest thosecarbenes derived from a nitrogen-containing heterocyclic system. An interesting variety of carbenemetal complexes has been testedin the MizorokiHeck reaction. In comparison, few examples can be found for the MatsudaHeck version of this coupling reaction.Additionally, the Sonogashira coupling has been also catalyzed with different carbenemetal catalysts.
Letter
109 Ethyl Imidazole-1-carboxylate (EImC) as aCarbonylating Agent: Efficient Synthesis ofOxazolidin-2-ones from Amino Alcohols
OHR2
NH
R3
R1
NO
R1
R2
R3
ON
N
O
O
K2CO3 / THF
R1 = Different alkyl groupsR2 = Different alkyl (or) aryl groupsR3 = Different alkyl (or) aryl groups
S. Veeraswamy, K. Indrasena Reddy, R. VenkatRagavan,* Satyanarayana Yennam, and A.Jayashreedoi:10.1246/cl.2013.109Electronic Supporting Information
127 Systematic Exploration of Lipophilic TagsThat Allow Efficient Anchoring of Aptamersto Live Cell Surfaces
Takeshi Tokunaga, Kohei Kuwahata, andShinsuke Sando*doi:10.1246/cl.2013.127Electronic Supporting Information
130 Enhanced Tumor Targeting and Photo-cytotoxicity of FolatePoly(ethylene glycol)Chlorin Photosensitizer Mediated by FolateReceptor
A549HeLa
Hep-20
20
40
60
80 II+FAA+F
Flu
ore
scen
ce in
ters
ity
NH N
N HN
OH
OH
OH
CONH O NHR
A R = -Boc,
I R = -Fol,
n
n =75
F = folic acidDonghong Li,* Pengxi Li, Zonglin Jiang, andLinfeng Guodoi:10.1246/cl.2013.130Electronic Supporting Information
132 Localized Sn2+ Emission Center Independ-ent of the Optical Basicity of Zinc PhosphateGlass
We have demonstrated that emission of Sn2+ center is not affected by chemical composition of the glass, indicating that local coordination state of Sn2+ emission center is generated.
135 A New Method for Estimating Surface BandEnergies of a Semiconductor Electrode inContact with an Electrolyte Solution
A new graphical method is presented to estimate surface band energies (or the flat-band potential, Ufb) of a semiconductor electrode unambiguously and consistently under conditions that various kinds of surface charges exist simultaneously. Surface band energies are a key quantity for knowing the reactivity of electrons and holes in bands, and the present method will be of fundamental importance in analyzing and developing high-performance semiconductor devices such as solar cells.Yoshihiro Nakato
doi:10.1246/cl.2013.135
137 (3-Fluoro-4-methoxyanilinium)+([18]Crown-6)Supramolecular Cation Salt of Ferromag-netic [MnIICrIII(oxalate)3]¹
140 New Organic Sensitizers with N-Substitutedor Nonsubstituted Pyrrole Units for Dye-sensitized Solar Cells
hνν
NN
CN
R n
O
O
n = 1~2R = H, Me, Bu, Oct, Dod
e
02468
1012
0 0.2 0.4 0.6 0.8Cu
rren
t d
ensi
ty /
mA
cm
-2
Voltage / V
n = 1, R = Hη = 5.1%TiO2
Masaki Hara, Daisuke Kondo, TomohiroShono, Yoshihito Kunugi, and HidenoriAihara*doi:10.1246/cl.2013.140Electronic Supporting Information
143 Inclusion Crystals of 3¡,7¡,12¡,24-Tetra-hydroxycholane with Haloaromatic Com-pounds: Pitches and Stability of HerringboneAssemblies in Channels
Wen-Tzu Liu, Yute Kin, Kazunori Nakano,Ichiro Hisaki,* Norimitsu Tohnai, and MikijiMiyata*doi:10.1246/cl.2013.143Electronic Supporting Information
146 Acetals of N,N-Dimethylformamides: Ambi-philic Behavior in Converting Carbon Di-oxide to Dialkyl Carbonates
Carbon dioxide is immobilized into dialkyl carbonate using acetals of N,N-dimethylformamide under atmospheric pressure. No special treatment with tailor-made catalysts is needed. Use of dimethyl sulfoxide as a solvent is critical. An ambiphilic mechanism is proposed for the direct synthesis of dialkyl carbonates from acetals and carbon dioxide.
Yuki Takada, Aki Matsuoka, Ya Du, HiroshiNaka, and Susumu Saito*doi:10.1246/cl.2013.146Electronic Supporting Information
148 Fabricating Perovskite BaHfO3 HollowNanospheres through a Mild Reflux Route
Yongzheng Lu, Hua Huang, Tiannan Ye,Jianguo Yu, Guodong Li, and Yongnan Zhao*doi:10.1246/cl.2013.148Electronic Supporting Information
150 Low-temperature Hydrothermal Synthesis ofBismuth Nanoflowers and Their Applicationfor Heavy Metal Detection Utilizing a low-temperature hydrothermal
method, pure bismuth nanoflowers were synthesized for the first time with remarkable productivity. The obtained nanostructures were used to prepare modified electrode, which have shown high sensibility for the detection of heavy metal ions in aqueous solution by stripping analysis.
Haifeng Yang, Yan Yan,* Junfang Li, XiaojingLu, Guangcheng Xi, Qing Zhang, and ChaoWangdoi:10.1246/cl.2013.150Electronic Supporting Information
ZnS−CuInS2−AgInS2 (Z-CAIS) nanoparticles with rod-like or spherical shapes were successfully synthesized, the band gap of which was dependent on the chemical compositions.
Meilin Dai, Taro Uematsu, Susumu Kuwabata,and Tsukasa Torimoto*doi:10.1246/cl.2013.171Electronic Supporting Information
174 Drawing Effect of Poly(vinyl alcohol) onCrystal Growth of Calcium Carbonate
The crystal form, morphology, orientation, and nucleation frequency of the calcium carbonate thin films which were formed on poly(vinyl alcohol) (PVA) have been changed by the drawing of PVA.
VateriteAragonite VateriteAragonite
nondrawn drawn
10μ μm 25 mNaoyuki Kubo and Masafumi Yamato*doi:10.1246/cl.2013.174
177 Facile Solubilization and Photovoltaic Ap-plication of C60 FullereneEthylenediamineAdduct
H2N
NH2
toluene
C60PC60
toluene
C9H19COCl
C60P-DC (n)
C60-EDA adduct particle
EDA DC
P3HT (p)S
C6H13
PEDOT:PSS(hole transportlayer)
S
OO
n SO3-
n
ITO (-)
TiO2
P3HT:C60P-DC
PEDOT:PSS
Au (+)
Brown Colored Solid
nTsuyoshi Akiyama,* Taiki Ueda, Yuji Ono,Kento Kimura, Ken-ichi Matsuoka, SunaoYamada, and Takeo Okudoi:10.1246/cl.2013.177Electronic Supporting Information
180 Primary ¢-Amino Acid Salt-catalyzed Asym-metric Michael Addition of Benzoylacetatesto Cyclic Enones and Its Application for theSynthesis of Enantioenriched 1,5-Diketones
LiO2C OTBDPS
NH2
Catalyst:
Ph
O
CO2t -Bu +( )n Ph
CO2t -Bu
O
O
*( )n
O
( )n Ph
O
O
*
Catalyst
yield up to 99%ee up to 98%
CF3CO2H
Masanori Yoshida,* Ami Kubara, and ShojiHaradoi:10.1246/cl.2013.180Electronic Supporting Information