We have demonstrated a rapid and facile synthetic method to prepare N-doped Cdots that has excitation independent-emission in yellow-orange region. The Cdots showed solvatochromic behavior in different solvents due to change in solvent polarity illustrating n → π* transition (edge band).

In recent years, polyaniline/CoFe ₂ O ₄ nanocomposites have gained attention because of their wide utilization in optoelectronics and biomedical studies. However, very limited research has been carried out on the anticandidal activity of polyaniline/CoFe ₂ O ₄ nanocomposite against Candida spp. Thus, the study was designed to investigate the anticandidal potential of PANI/CoFe ₂ O ₄ nanocomposite against Candida albicans 077. PANI/CoFe ₂ O ₄ nanocomposite (denoted as “cfPNCs”) was synthesized by polymerization of aniline in the presence of CoFe ₂ O ₄ nanoparticles. The structural and thermal properties of the synthesized PANI/CoFe ₂ O ₄ nanocomposite were investigated. It was noteworthy that PANI/CoFe ₂ O ₄ nanocomposite showed promising anticandidal activity in a dose-dependent manner. Results also showed that the protection of histidine (a ROS quencher) against ROS clearly suggested the implication of ROS in anticandidal activity of PANI/CoFe ₂ O ₄ nanocomposite. It is encouraging to conclude that PANI/CoFe ₂ O ₄ nanocomposite bears the potential of their applications in biomedicine, especially nanotherapy for diseases caused by C. albicans .

In bulk heterojunction organic solar cells (OSCs), nanomorphology of the photoactive layer plays a crucial role in determining photocurrent and fill factor (FF) of OSCs, and therefore it is essential to control the nanomorphology of the photoactive layer to fabricate devices with high power conversion efficiency (PCE). We demonstrate the combined effects of a ZnO nanorippled electron transport layer (ETL) and solvent additive (1,8-diiodooctane (DIO)) on the nanomorphology and performance of a model OSC in an inverted geometry. The photoactive layer in the model OSC is composed of Poly [4,8-bis (5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl] (PTB7-Th):phenyl-C71-butyric acid methyl ester (PC ₇₁ BM) blend. It is observed that the use of ZnO nanoripples as an ETL and DIO as a solvent additive facilitates the formation of near ideal nanomorphology of bi-continuous interpenetrating network of donor and acceptor. This is confirmed by morphological studies using atomic force microscopy, scanning electron microscopy and transmission electron microscopy. Photo-electrochemical impedance spectroscopy measurements confirm that obtained nanomorphology of bicontinuous interpenetrating network is contributing to the improved device performance. The device with 3 vol% DIO, with underneath ZnO nanoripples exhibited improved current density ( J _sc ), FF, open circuit voltage ( V _oc ) and PCE of 15.57 mA cm ⁻² , 64.50%, 0.81V and 8.20%, respectively.