Synthesis and characterization of novel fluorescent amphiphilic diblock copolymer

Dhanalakshmi, T.; Meenarathi, B.; Anbarasan, R.

doi:10.1007/s00289-016-1600-z

Cited by 14 publications

(13 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison, the xanthene type dyes (Flur) are not suitable for the ROP of CL at 160 o C, whereas the R6G dye is stable at the same experimental conditions. In our previous publications [31], a similar effect was observed while using xanthene type dyes.…”

Section: Uv-visible Spectral Analysissupporting

confidence: 76%

See 1 more Smart Citation

Structural and Thermal Studies of Fluorescein and Rhodamin6G Grafted Diblock Copolymers

Anbarasan

Meenarathi²,

Parthasarathy

2021

J Inorg Organomet Polym

Self Cite

View full text Add to dashboard Cite

The ring-opening polymerization (ROP) of tetrahydrofuran (THF) and ε-caprolactone (CL) was performed at 160 o C for 2 hr under N 2 ambiance by using two different dyes such as uorescein (Flur) and rhodamine6G (R6G) as novel initiators. The structure of the dye centered diblock copolymers was concluded by analyzing the NMR spectra. The melt transition temperature and thermal stability of the polymers were concluded by DSC and TGA. The FT-IR spectra concluded the structure of the dye grafted homopolymer and diblock copolymers. The increase in molecular weight (M w ) of the dye-centered diblock copolymer was concluded by the GPC measurement. The conjugation of dye with the polymer backbone was carried out by a single-step method.

show abstract

Section: Uv-visible Spectral Analysissupporting

confidence: 76%

“…7a). The major mass loss at 410 o C (Table 1) is attributing to the decomposition of PCL [31]. The minor mass loss at 500 o C is responsible for the decomposition of Flur dye attached to the chain end of the PCL.…”

Section: Tga Studymentioning

confidence: 99%

Structural and Thermal Studies of Fluorescein and Rhodamin6G Grafted Diblock Copolymers

Anbarasan

Meenarathi²,

Parthasarathy

2021

J Inorg Organomet Polym

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, one can see both the agglomerated and nonagglomerated nanoparticles. Moreover, the interphase region between hydrophilic PTHF and hydrophobic PCL leads to the formation of nanoparticles [38]. Hence, the nanoparticles appeared are due to the nanosized V 2 O 5 and polymer nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of fluorescent diblock copolymer nanoparticle supported catalyst for the reduction of Cr(VI), p-nitrophenol and rhodamine 6G dye: a comparative study

Abinayasri¹,

Nageswari²,

Meenarathi³

et al. 2017

Bull Mater Sci

View full text Add to dashboard Cite

A fluorescent diblock copolymer nanocomposite (DBCNC) was synthesized by ring opening polymerization (ROP) method using rhodamine 6G (R6G) dye as an initiator through bulk polymerization technique. ROP of caprolactone was carried out at 160 • C for 2 h under nitrogen atmosphere in the presence of stannous octoate (Sn(Oct) 2) as a catalyst followed by the ROP of tetrahydrofuran in the presence of phthalicanhydride as a co-monomer. Thus, synthesized fluorescent DBCNC was characterized by various analytical tools such as FTIR spectroscopy, UV-visible spectroscopy fluorescence emission spectroscopy, DSC, TGA and FESEM. The catalytic reduction of p-nitrophenol (NiP), Cr(VI) and R6G was carried out in the presence of DBCNC as a catalyst with the help of UV-visible spectrophotometer. The apparent rate constant (k app) and induction time (T i) were determined from the UV-visible spectral data. The nanosized V 2 O 5 was prepared by a simple chemical reduction of bulk-sized V 2 O 5 by using sodium borohydride (NaBH 4) as a reducing agent. During the DBC formation, 0.01 g of nanosized V 2 O 5 was added. This type of polymer supports the catalyst which is very much useful in the catalysis industry because of its easy separation and recyclable property.

show abstract

“…The thermal stability and other properties of the PTHF can be increased by the copolymerization. Poly(methylmethacrylate)‐based block copolymer of PTHF was reported by Yoshida et al Similarly, the other block copolymers of PTHF with 2‐methyl‐2‐oxazoline, urethane, PCL, poly(ethersulfone), styrene, and caprolactone were made. By thorough literature survey, we found few reports are available on the block copolymer of PTHF with PCL by using a single initiator for the both CL and THF polymerization.…”

Section: Introductionmentioning

confidence: 96%

Low temperature splinting activity and catalytic behavior of nano Ag doped sulphamicacid bridged diblock copolymer

Anbarasan

Jeyapriya²,

Meenarathi³

et al. 2018

Polymers for Advanced Techs

Self Cite

View full text Add to dashboard Cite

A novel silver nanoparticle doped diblock copolymer was synthesized by a 3‐step process via bulk polymerization process under nitrogen atmosphere. The above prepared polymer is characterized by FTIR spectroscopy, fluorescence emission spectroscopy, circular dichroism (CD), HRTEM, and FESEM. The sulphamicacid end capped poly(ε‐caprolactone) (P1) system exhibited higher tensile strength than the sulphamicacid bridged diblock copolymer (P2) and nano Ag doped sulphamicacid bridged diblock copolymer (P3) systems. The splinting activity of the diblock copolymers was tested and confirmed the low temperature splinting activity of the diblock copolymer. The Ag nanoparticle catalyzed catalytic reduction of p‐nitrophenol (NiP) was tested, and the apparent rate constant (kapp) was determined as 7.36 × 10−3 sec−1. The thermal studies were carried out by DSC and TGA methods. The TGA study declared that the P1 system has higher degradation temperature than the P2 and P3 systems. The P1 system has higher melting temperature (Tm) (75.5°C) than the P2 and P3 systems. The CD study indicated that the conformation of sulphamicacid was not changed even after the formation of nano Ag doped sulphamicacid bridged diblock copolymer.

show abstract

Synthesis and characterization of novel fluorescent amphiphilic diblock copolymer

Cited by 14 publications

References 24 publications

Structural and Thermal Studies of Fluorescein and Rhodamin6G Grafted Diblock Copolymers

Structural and Thermal Studies of Fluorescein and Rhodamin6G Grafted Diblock Copolymers

Synthesis of fluorescent diblock copolymer nanoparticle supported catalyst for the reduction of Cr(VI), p-nitrophenol and rhodamine 6G dye: a comparative study

Low temperature splinting activity and catalytic behavior of nano Ag doped sulphamicacid bridged diblock copolymer

Contact Info

Product

Resources

About