Poly(o-phenylenediamine) and benzeneselenol copolymer fluorescent nanorod: An ultra-sensitive fluorescent probe and a fluorescent switch triggered by redox procedure

Large-scale fabrication of heavy doped carbon quantum dots with tunable-photoluminescence and sensitive fluorescence detection

“…This can be attributed to the low c of S and Se, which can be an electron donor. 25,26 In contrast the PL spectrum blue shied when CQDs were doped by N element. 27 Furthermore, the F f of heavy doped CQDs is also related to the c of heteroatoms.…”

Theoretical calculation based synthesis of a poly(p-phenylenediamine)–Fe3O4composite: a magnetically recyclable photocatalyst with high selectivity for acid dyes

“…The peaks at 1239 and 1370 cm À1 were associated with C-N stretching in the benzenoid and quinoid imine units. [37][38][39][40] The peaks at 900 and 830 cm À1 can be attributed to the out-of-plane deformation of C-H on a 1, 2, 4-tetrasubstituted benzene ring, which implied that the polymers had a basic phenazine skeleton. Moreover, the bands at 754 and 593 cm À1 , characteristic of C-H out-ofplane bending vibrations of benzene nuclei in the phenazine skeleton, were also observed.…”

“…Previous reports conrmed that the PANI and PpPD were mixtures of oligomers, include dimer, trimer, and other oligomers. [24][25][26]36,37 Considering this issue, four types of oligomers of PpPD were chosen: Fig. 1 shows all types of molecular structures used in the calculations, A1 was the molecular structure of the PANI, A2, A3, A4, and A5 were the molecular structures of PpPD.…”

“…The two broad diffraction peaks at 20 and 30 were attributed to the amorphous structure of PpPD. 37 Each diffraction peak of the Fe 3 O 4 could be assigned to the cubic phase structure of Fe 3 O 4 (JCPDS 65-3107). The peaks at 2q values: 30, 35, 43, and 62.5 , could be indexed as the (220), (311), (400), and (422) crystal planes of cubic phase Fe 3 O 4 , respectively.…”

Quantum size effect of poly(o-phenylenediamine) quantum dots: From controllable fabrication to tunable photoluminescence properties

“…As sensitive fluorescent sensing platforms, these CPs nano-particles played an important role in fluorescence detection [57]. Moreover, we also have demonstrated the extensive application prospect of poly(pphenylenediamine) (PpPD) nano-particles in fluorescence detection [59][60][61][62][63][64]. The PpPD nanofibers show high-efficiency effects in enhancing the PL properties of thiols through the fluorescence resonance energy transfer [63].…”