Hari Sharan Giri

Phenothiazine-Based Polyaniline Fibers: Impact of Fiber Architecture on Electrical Properties

Hari Sharan Giri, Humayun Ahmad, Santanu Kundu, Colleen N. Scott

In this study, a phenothiazine-based polyaniline derivative ( PTZ–PANI ) was employed to fabricate coaxial and uniaxial electrospun fibers to examine the effects of fiber architecture on material properties. Uniaxial fibers were produced from a homogeneous mixture of doped polymer ( PTZ–PANI-D …

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Knowledge, attitudes, and conservation threats to globally vulnerable Sarus Cranes in Lumbini Province, Nepal

Bishnu Prasad Bhattarai, Hem Bahadur Katuwal, Sandeep Regmi, Amrit Nepali et autres

Understanding people’s knowledge and attitudes is essential for evaluating and assessing the distribution and threats confronted by wildlife, including bird species. However, research and data are limited, particularly on large waterbirds like the globally threatened Sarus Crane ( Grus antigone ) that …

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First photographic evidence of black giant squirrel Ratufa bicolor (Sparrman, 1778) in Makawanpur District, Nepal

Sachet Timilsina, Bishnu Prasad Pandey, Hari Sharan Giri, Bishnu Prasad Bhattarai et autres

The black giant squirrel (Ratufa bicolor), a Globally Near Threatened species has been the first recorded sighting in Nepal's Makawanpur district.We present the photographic record of two black giant squirrels in lowland broad-leaved forest at 592 meters.Previously, evidence of the black giant …

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Corrosion Protective Coatings from Poly(heterocyclic diphenylamine): Polyaniline Analogues

Raymond Femi Awoyemi, Mohammed N. Almtiri, Hari Sharan Giri, Colleen N. Scott et autres

This study explores conducting polymers with side chains containing long, branched alkyl groups as candidates for corrosion suppression coatings. These polymers, containing carbazole, phenothiazine, and phenoxazine cores, may be considered as analogues to polyaniline, which is often employed in corrosion control applications. …

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Side Chain Effects on the Conductivity of Phenothiazine-Derived Polyaniline

Hari Sharan Giri, Guorong Ma, Mohammed N. Almtiri, Xiaodan Gu et autres

Side chain alkyl groups have become the standard for incorporating solubilizing groups into conjugated polymers. However, the variety of alkyl groups available and their location on the polymer’s backbone can contribute to the packing of the polymer chains in many different ways, …

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Population and conservation threats to the vulnerable Sarus crane Grus antigone in Nepal

Hari Prasad Sharma, Hem Bahadur Katuwal, Sandeep Regmi, Rajendra Narsingh Suwal et autres

), which inhabits agricultural-wetland ecosystems. Despite the burgeoning built-up areas and diminishing agricultural and wetland spaces, scant research investigates the impact of these changing land uses on the globally vulnerable Sarus crane in Nepal. During the pre-breeding season from April to June …

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Polyaniline Derivatives and Their Applications

Hari Sharan Giri, Timothy J. Dowell, Mohammed N. Almtiri, Colleen N. Scott

Polyaniline (PANI) is one of the oldest, yet most profound conducting polymer discovered. It’s ease of synthesis, high conductivity, and environmental stability in the doped state makes it very attractive for a variety of potential applications. However, its insolubility and lack of …

Evaluation of the Passivation Effects of PEDOT:PSS on Inverted Perovskite Solar Cells

Yifang Qi, Mohammed N. Almtiri, Hari Sharan Giri, Surabhi Jha et autres

Abstract Poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is a popular hole transport material in perovskite solar cells (PSCs). However, the devices with PEDOT:PSS exhibit large open‐circuit voltage ( V oc ) loss and low efficiency, which is attributed to mismatched energy level alignment and the …

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Electrochemically Stable Carbazole-Derived Polyaniline for Pseudocapacitors

Mohammed N. Almtiri, Timothy J. Dowell, Hari Sharan Giri, David O. Wipf et autres

Supercapacitor energy storage devices are well suited to meet the rigorous demands of future portable consumer electronics (PCEs) due to their high energy and power densities (i.e., longer battery-life and rapid charging, respectively) and superior operational lifetimes (10 times greater than lithium-ion …

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Phytochemical Evaluation of Some Medicinal Plants of Puthan District of Nepal

Hari Sharan Giri, Meena Rajbhandari

Different parts of eleven medicinal plants used in the traditional medicine in Puthan district were collected. Three different extracts, methanol, 50% aqueous methanoland 70% aqueous acetone extractswere prepared for each plant material. The methanol extractswere screened for the presence of different classes …

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