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A novel phthalazine based highly selective chromogenic and fluorogenic chemosensor for Co2+ in semi-aqueous medium: Application in cancer cell imaging.

26-11-2014 | Smita Patil; Rahul D. Patil; Umesh A Fegade; Banashree Bondhopadhyay; Suban K Sahoo; Narinder Singh; Anupam Basu; Ra ..., Photochemical & Photobiological Sciences, 2014

A new phthalazine based chemosensor 3 was developed for the highly selective and sensitive detection of Co2+ in mixed solvent system CH3CN/H2O (1:1, v/v). In the presence of Co2+, colour of the solution 3 was changed from yellow to green, the absorption maxima of 3 was red-shifted from 383 nm to ...


A high efficiency solution processed polymer inverted triple-junction solar cell exhibiting a power conversion efficiency of 11.83%

25-11-2014 | Abd. Rashid bin Mohd Yusoff; Dongcheon Kim; Hyeong Pil Kim; Fabio Kurt Shneider; Wilson Jose da Silva; Jin Jang, Energy & Environmental Science, 2014

High efficiency, solution-deposited polymer inverted double- and triple-junction solar cells are demonstrated. The devices are composed of three distinctive photosensitive materials in three distinct subcells, with minimal absorption spectral overlap, and with a bandgap ranging from 1.3 eV to ...


Novel heterocyclic poly(pyridine‐imide)s with unsymmetric carbazole substituent and noncoplanar structure: High thermal, mechanical and optical transparency, electrochemical, and electrochromic properties

21-11-2014 | Ying‐Chi Huang, Kun‐Li Wang, Wei‐Yi Lee, Yi‐An Liao, Der‐Jang Liaw, Kueir‐Rarn Lee, Juin‐Yih Lai, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT A diamine containing heterocyclic pyridine and unsymmetrical carbazole substituents, 4‐(9‐ethyl‐3‐carbazole)‐2,6‐bis(4‐aminophenyl)pyridine (CBAPP), was prepared for use in the synthesis of poly(pyridine‐imide)s PI‐1–8 by direct polycondensation with dianhydrides in ...


Fluorescence Enhancement of Covalently Linked 1‐Cyano‐1,2‐Diphenylethene Chromophores with Naphthalene‐1,8‐diyl Linker Units: Analysis Based on Kinetic Constants

20-11-2014 | Takashi Hirose, Yohei Tsunoi, Yuya Fujimori, Kenji Matsuda, Chemistry - A European Journal, 2014

Abstract The fluorescence enhancement effect of covalently fixed fluorescent chromophores has been investigated by means of kinetic analysis of decay rate constants and theoretical calculations. Derivatives of 1‐cyano‐1,2‐diphenylethene dimer have a distorted cyclic structure when both ends ...


Solution processable diketopyrrolopyrrole (DPP) cored small molecules with BODIPY end groups as novel donors for organic solar cells

18-11-2014 | Diego Cortizo-Lacalle, Calvyn T. Howells, Upendra K. Pandey, Joseph Cameron, Neil J. Findlay, Anto Regis Inigo, Tell ..., Beilstein Journal of Organic Chemistry, 2014

Abstract Two novel triads based on a diketopyrrolopyrrole (DPP) central core and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) units attached by thiophene rings have been synthesised having high molar extinction coefficients. These triads were characterised and used as donor materials ...


A facile synthesis of a novel three‐phase nanocomposite: Single‐wall carbon nanotube/silver nanohybrid fibers embedded in sulfonated polyaniline

18-11-2014 | Rajesh K. Agrawalla, Subhasish Paul, Pratap K. Sahoo, Amit K. Chakraborty, Apurba K. Mitra, Journal of Applied Polymer Science, 2014

ABSTRACT A three‐phase water‐soluble nanocomposite of single wall carbon nanotube/silver nanoparticle hybrid fibers embedded in sulfonated polyaniline has been synthesized by a simple chemical solution mixing process. The nanocomposite has been characterized by high resolution electron ...


Mechanisms of SnO2 Nanoparticles Formation and Growth in Acid Ethanol Solution Derived from SAXS and Combined Raman–XAS Time-Resolved Studies

18-11-2014 | Bruno L. Caetano; Florian Meneau; Celso V. Santilli; Sandra H. Pulcinelli; Marina Magnani; Valérie Briois, Chemistry of Materials, 2014

Although nanocrystalline SnO2 is among the most intensely studied nanoscale semiconductor metal oxide, the actual mechanisms of nanoparticle formation and growth often remain unclear due to limited accessibility to in situ derived time-resolved information about the evolutions of precursor ...


Arsenic-Rich Acid Mine Water with Extreme Arsenic Concentration: Mineralogy, Geochemistry, Microbiology, and Environmental Implications

14-11-2014 | Juraj Majzlan; Jakub Plášil; Radek Škoda; Johannes Gescher; Felix Kögler; Anna Rusznyak; Kirsten Küsel; Thomas R. Ne ..., Environmental Science & Technology, 2014

Extremely arsenic-rich acid mine waters have developed by weathering of native arsenic in a sulfide-poor environment on the 10th level of the Svornost mine in Jáchymov (Czech Republic). Arsenic rapidly oxidizes to arsenolite (As2O3), and there are droplets of liquid on the arsenolite crust with ...


Sensors, Vol. 14, Pages 21535-21548: Magnetic Bead-Based Colorimetric Immunoassay for Aflatoxin B1 Using Gold Nanoparticles

14-11-2014 | Wang, Xu ; Niessner, Reinhard ; Knopp, Dietmar, Sensors, 2014

A competitive colorimetric immunoassay for the detection of aflatoxin B1 (AFB) has been established using biofunctionalized magnetic beads (MBs) and gold nanoparticles (GNPs). Aflatoxin B1-bovine serum albumin conjugates (AFB-BSA) modified MBs were employed as capture probe, which could ...


EXAFS Study of the Speciation of Protactinium(V) in Aqueous Hydrofluoric Acid Solutions

12-11-2014 | Stéphanie M. De Sio; Richard E. Wilson, Inorganic Chemistry, 2014

The speciation of protactinium(V) in hydrofluoric acid (HF) solutions was studied using X-ray absorption spectroscopy. Extended X-ray absorption fine structure measurements were performed on an aqueous solution of 0.05 M protactinium(V) with various HF concentrations ranging from 0.5 to 27 M in ...


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