Narayana, Yemineni S. L. V. ; Venkatakrishnarao, Dasari ; Biswas, Arani ; Mohiddon, Mahamad Ahamad ; Viswanathan, Nirmal ; Chandrasekar, Rajadurai (2016) Visible–Near-Infrared Range Whispering Gallery Resonance from Photonic μ-Sphere Cavities Self-Assembled from a Blend of Polystyrene and Poly[4,7-bis(3-octylthiophene-2-yl)benzothiadiazole-co-2,6-bis(pyrazolyl)pyridine] Coordinated to Tb(acac)3 ACS Applied Materials & Interfaces, 8 (1). pp. 952-958. ISSN 1944-8244
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Official URL: http://doi.org/10.1021/acsami.5b10710
Related URL: http://dx.doi.org/10.1021/acsami.5b10710
Abstract
A novel red emitting copolymer (P1) was prepared (Mn ∼ 10.7 kDa) by copolymerizing tridentate ligand, namely 2,6-bis(pyrazolyl)pyridine (BPP) with 4,7-bis(2-ethynyl-5-thienyl)-2,1,3-benzothiadiazole. This copolymer readily formed an orange yellow emitting metal containing conjugated polymer (P1.Tb) with Tb(acac)3. Further, a judicial blend of P1.Tb with polystyrene and its subsequent self-assembly in THF/water produced microspheres with smooth surface area. Interestingly, continuous wave laser excitation of a single microsphere displayed whispering-gallery-mode (WGM) resonance modes over a broad wavelength range covering visible (Vis) and near-infrared (NIR) regions (0.550–0.875 μm). The estimated Q factor was up to 700, which is very high for a metal containing conjugated polymer (MCCP)-based optical gain medium.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| Keywords: | WGM Resonators; Self-assembly; Polystyrene; Metallo-polymers; Near-infrared Emission. |
| ID Code: | 117393 |
| Deposited On: | 23 Apr 2021 06:07 |
| Last Modified: | 23 Apr 2021 06:07 |
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