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The purpose of this research is as follows: DPP-BOH-PVA has been synthesized from 1,1′:3′,1″-terphenyl-5'-boronic acid (DPP-OH) and polyvinyl alcohol (PVA). The afterglow lifetime of DPP-BOH-PVA was studied by changing contents of DPP-OH (1, 2 and 4 Wt.%). These films were characterized with Fourier transform infrared, X-ray diffraction as structural analysis and DSC as thermal analysis. Afterglow lifetimes were evaluated as time-resolved emission decay profile analysis. Fiber films of DPP-BOH-PVA-2-E have been prepared by electrospinning method with the diameter of 5 μm and afterglow life time of 2.1 s (@ 535 nm) under ambient conditions. Stimulus responsive properties with afterglow emission for fiber film were investigated.

During the synthesis of the polymer, modification was carried out using DPP-OH/PVA with a molar ratio of 1/4, under an alkalinity medium with ammonium hydroxide and with a temperature of 80°C.

XRD results indicate that DPP-BOH-PVA film had high crystallinity, which is crucial for preparing organic room temperature phosphorescence (RTP) materials.

The reaction mixture must be stirred continuously. Temperature should be controlled to prevent the rapid evaporation of ammonium hydroxide.

This study provides technical information for the synthesis of multidimensional stimulation response RTP micron fiber thin film. The electrospinning technology may also promote the applications of the large areas of RTP films.

This resin will be used for the multidimensional stimulation response RTP fiber thin film.

The diameter of fiber film of PP-BOH-PVA-2-E by electrospinning method was in the range of 5 μm, and its afterglow lifetime decayed to be 2.1 s.

During the past several decades, national distance (ND) increasingly became a vital cornerstone in international business (IB) research, as both explicit and implicit distance are parts of the essential reasons for IB activities. However, there are various and chaotic methods to measure ND in the last literature; therefore, this paper aims to suggest legitimate uses of ND in the IB field and the best ND dimensions for various situations.

This paper used a historical overview of the theoretical background and conceptual development of ND based on the past four decades worth of studies in leading 17-IB journals using Google Scholar. The authors also focus on multiform ND measurement methods and details through qualitative and quantitative analysis based on previous studies’ data collection.

This research summarized the common measurement methods and elements of different ND and proposed solutions based on a multifaceted analysis.

The micro analysis examines each type of ND in terms of the proportion of variables, issues, measurement methods, representative proxies beyond previous studies. This research also tried to provide clarity and suggest solutions to these problems through our macro& micro-analysis.