Vidya R

VIT School for Agricultural Innovations and Advanced Learning

Vellore Campus

Ganesamoorthy R

Sakthivel P.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

IET Nanobiotechnology

Solar Energy Materials and Solar Cells

Review: Fullerene based acceptors for efficient bulk heterojunction organic solar cell applications

Journal of Fluorescence

Bay Functionalized Perylenediimide with Pyridine Positional Isomers: NIR Absorption and Selective Colorimetric/Fluorescent Sensing of Fe3+ and Al3+ Ions

Development of nonfullerene acceptors plays an important role in the commercial availability of plastic solar cells. We report herein synthesis of bay-substituted donor–acceptor–donor (D–A–D)-type perylene diimide (PDI)-based small molecules (SM-1 to SM-4) by Suzuki coupling method and their use as acceptors in bulk heterojunction organic solar cells (BHJ-OSCs) with poly(3-hexylthiophene) (P3HT) polymer donor. We varied the number of electron-rich thiophene units and the solubilizing side chains and also evaluated the optical and electrochemical properties of the small molecules. The synthesized small molecules were confirmed by Fourier-transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and high-resolution mass spectroscopy (HR-MS). The small molecules showed extensive and strong absorption in the ultraviolet–visible (UV–Vis) region up to 750 nm, with bandgap (Egopt) reduced below &lt;2 eV. The energy levels of small molecules SM-1 to SM-4 were suitable for use as electron-accepting materials. The small molecules showed good thermal stability up to 300°C. BHJ-OSCs with SM-1 and P3HT polymer donor showed maximum power conversion efficiency (PCE) of 0.19% with Voc of 0.30 V, Jsc of 1.72 mA cm−2, and fill factor (FF) of 37%. The PCE decreased with the number of thiophene units. The PCE of SM-2 was lower than that of SM-1. This difference in PCE can be explained by the higher aggregation tendency of the bithiophene compared with the thiophene unit. Introduction of the solubilizing group in the bay position increased the aggregation property, leading to much lower PCE than for the small molecules without solubilizing group. © 2017, The Minerals, Metals & Materials Society.

Journal of Electronic Materials

Perylene-Diimide Based Donor–Acceptor–Donor TypeSmall-Molecule Acceptors for Solution-ProcessableOrganic Solar Cells

Tetrahedron Letters

Review of carbazole based conjugated molecules for highly efficient organic solar cell application

A series of ruthenium-quinolinol complexes were synthesized using a simple and effective pathway and their in vitro antibacterial activity against various resistant gram-positive and gram-negative bacteria were evaluated. It was established that compound [(η6-pcymene)RuCl(κ2-O,N-5,7-dibromo-HyQ)]·Cl (3b) &amp; [(η6-pcymene)RuCl(κ2-O,N-5,7-dibromo-HyQ)]·Cl (3e) were significantly active against Staphylococcus aureus, Escherichia coli, Bacillus subtilis &amp; Salmonella sp. The structures of the new compounds were elucidated by the analysis of spectroscopic data. The stability of complex [(η6-pcymene)RuCl(κ2-O,N-5,7-dibromo-HyQ)]·Cl (3b) was measured by UV spectroscopy &amp; time dependent NMR spectroscopy. Compound 3b also shows remarkable fluorescence. © 2015 Elsevier Ltd. All rights reserved.

Bioorganic & Medicinal Chemistry Letters

An efficient synthesis and in vitro antibacterial evaluation of ruthenium–quinolinol complexes

Synthesis and studies of bay-substituted perylene diimide-based D–A–D-type SM acceptors for OSC and antimicrobial applications

Journal	IET Nanobiotechnology
Publisher	Institution of Engineering and Technology (IET)
ISSN	1751-8741
Open Access	0