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The Control of Conjugation Lengths and Steric Hindrance to Modulate Aggregation‐Induced Emission with High Electroluminescence Properties and Interesting Optical Properties

20-Nov-2015 | Miao‐Miao Xue, Yue‐Min Xie, Lin‐Song Cui, Xiang‐Yang Liu, Xiao‐Dong Yuan, Yong‐Xi Li, Zuo‐Quan Jiang, Liang‐Sheng Liao, Chemistry - A European Journal, 2015

Abstract A series of novel AIE‐active (aggregation‐induced emission) molecules, named SAF‐2‐TriPE, SAF‐3‐TriPE, and SAF‐4‐TriPE, were designed and synthesized through facile reaction procedures. We found that incorporation of the spiro‐acridine‐fluorene (SAF) group, which is famous for its ...


Polymorphism of Two-Dimensional Cyanine Dye J-Aggregates and Its Genesis: Fluorescence Microscopy and Atomic Force Microscopy Study

20-Nov-2015 | Valery V. Prokhorov; Olga M. Perelygina; Sergey I. Pozin; Eugene I. Mal’tsev; Anatoly V. Vannikov, Journal of Physical Chemistry B, 2015

Polymorphic J-aggregates of monomethine cyanine dye 3,3′-di(γ-sulfopropyl)-5,5′-dichlorotiamonomethinecyanine (TC) have been studied by fluorescence optical microscopy (FOM) and by atomic force microscopy (AFM). The in situ FOM observations in a solution drop distinguish two J-aggregate ...


A sensitive fluorescence method for detection of E. Coli using rhodamine 6G dyeing

17-Nov-2015 | Yaohui Wang, Caina Jiang, Guiqing Wen, Xinghui Zhang, Yanghe Luo, Aimiao Qin, Aihui Liang, Zhiliang Jiang, Luminescence, 2015

Abstract Negatively charged bacteria combined with positively charged alkaline dye rhodamine 6G (Rh6G) in NaH2PO4–Na2HPO4 buffer solution pH 7.4, by electrostatic interaction. The dyed bacteria exhibited a strong fluorescence peak at 552 nm and fluorescence intensity was directly linear to ...


High rectification in organic diodes based on liquid crystalline phthalocyanines

17-Nov-2015 | Petru Apostol; Juliana Eccher; Marta Elisa Rosso Dotto; Cassiano Batesttin Costa; Thiago Cazati; Elizabeth A Hillard ..., Physical Chemistry Chemical Physics, 2015

The optical and electrical properties of mesogenic metal-free and metalated phthalocyanines (PCs) with a moderately sized and regioregular alkyl periphery were investigated. In solution, the individualized molecules show fluorescence lifetimes of 4-6 ns in THF. When deposited as solid thin films ...


Ultrasound-assisted chiral derivatization of etodolac with (1R)-(-)-menthyl chloroformate for the determination of etodolac enantiomers

15-Nov-2015 | Author(s): Yan Jin, Jing Zhao, Lydia Rhyman, Ponnadurai Ramasami, Yujin Shin, Kyung Min Jeong, Jeongmi Lee, Arabian Journal of Chemistry, 2015

Publication date: Available online 11 November 2015 Source:Arabian Journal of Chemistry Author(s): Yan Jin, Jing Zhao, Lydia Rhyman, Ponnadurai Ramasami, Yujin Shin, Kyung Min Jeong, Jeongmi Lee This study presents the first report of an ultrasound-assisted derivatization ...


Exploration of Quenching Pathways of Multiluminescent Acenes Using the GRRM Method with the SF-TDDFT Method

13-Nov-2015 | Satoshi Suzuki; Satoshi Maeda; Keiji Morokuma, Journal of Physical Chemistry A, 2015

The quenching pathways were investigated for three types of multiluminescent acene derivatives, which show environment-dependent fluorescence. Spin–flip time dependent density functional theory (SF-TDDFT) combined with the Global Reaction Route mapping (GRRM) strategy is employed to locate ...


Unimolecular Submersible Nanomachines. Synthesis, Actuation, and Monitoring

13-Nov-2015 | Víctor García-López; Pinn-Tsong Chiang; Fang Chen; Gedeng Ruan; Angel A. Martí; Anatoly B. Kolomeisky; Gufeng Wang; ..., Nano Letters, 2015

Unimolecular submersible nanomachines (USNs) bearing light-driven motors and fluorophores are synthesized. NMR experiments demonstrate that the rotation of the motor is not quenched by the fluorophore and that the motor behaves in the same manner as the corresponding motor without attached ...


2-Hetaryl-1,3-tropolones based on five-membered nitrogen heterocycles: synthesis, structure and properties

12-Nov-2015 | Yury A. Sayapin, Inna O. Tupaeva, Alexandra A. Kolodina, Eugeny A. Gusakov, Vitaly N. Komissarov, Igor V. Dorogan, N ..., Beilstein Journal of Organic Chemistry, 2015

Abstract A series of derivatives of 2-hetaryl-1,3-tropolone (β-tropolone) was prepared by the acid-catalyzed reaction of 2-methylbenzoxazoles, 2-methylbenzothiazoles and 2,3,3-trimethylindoline with 3,4,5,6-tetrachloro-1,2-benzoquinone. The molecular structures of the three representative ...


Amphiphilic Cyanine‐Platinum Conjugates as Fluorescent Nanodrugs

11-Nov-2015 | Tingting Sun, Zhigang Xie, Chemistry - An Asian Journal, 2015

Two fluorescent nanomedicines based on small molecular cyanine‐platinum conjugates have been prepared for the first time via a nanoprecipitation method, and characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS). The conjugates exhibited enhanced fluorescence ...


A ‘turn‐on’ fluorescent chemosensor for quantification of serum albumin in aqueous solution at neutral pH

10-Nov-2015 | Yuanyuan Li, Kai Li, Juan He, Luminescence, 2015

Abstract A fluorescent chemosensor 1 (4‐diethylamino‐2′‐hydroxychalcone) for detecting serum albumin with long‐wavelength emission, good selectivity and facile synthesis was reported. Upon the addition of bovine serum albumin (BSA) to an aqueous solution of 1 at neutral pH, a ‘turn‐on’ ...


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