Blue organic light-emitting diodes with hybridized local and charge-transfer excited state realizing high external quantum efficiency.

Donor-spacer-acceptor (D-π-A) materials CAPI and CCAPI, with hybridized local and charge transfer (HLCT) emissive states, have been synthesized. The twisting D-π-A architecture promotes the partial separation of HOMO and LUMO, leading to an enhanced % CT component, and the anthracene moiety in CAPI and CCAPI increases the conjugation length, leading to an enhanced % LE component. The non-doped device with CCAPI shows the blue emission (450 nm) with maximum current efficiency ( ), power efficiency ( ), and external quantum efficiency ( ) of 16.

Evaluation of cost effective diagnostic tools in characterisation of Acute Leukemia in Southern India.

The incidence of Acute Leukemia (AL) subtypes varies according to geographical distribution and more predominant in developing countries. The aim here was to evaluate the usefulness of cost effective diagnostic tools in characterization of Acute Lymphoblastic Leukemia (ALL) in resource poor population. One hundred and two AL cases were diagnosed.

Seborrheic keratosis over genitalia masquerading as Buschke Lowenstein tumor.

Seborrheic keratosis (SK) is a common benign condition of the skin. It does not usually appear before middle age. Upper trunk and face are the sites most commonly involved.

A study on Fourier transform infrared spectroscopy, thermal, mechanical, NLO and laser damage properties on unidirectional Glycinium Picrate Mono Glycine crystal.

By directional solidification, single crystal of Glycinium Picrate Mono Glycine (GPMG) was successfully grown by Sankaranarayanan-Ramasamy (SR) method. An optically transparent crystal of GPMG has been grown along 〈011〉 plane by a mixed solvent of acetone and double distilled water. The evaporation rate was controlled and a single crystal of 12mm diameter and 35mm length was obtained.