https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48629 Wed 07 Feb 2024 15:26:20 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38133 -1 cm2 V^-1 s^-1) and significant reduction in solid-state emission quenching compared to pristine CDs; hence, it is used here as an emitting layer in both indium tin oxide (ITO)-coated glass and ITO-coated flexible poly(ethylene terephthalate) (PET) substrate OLED devices, without any hole-injection layer. The flexible OLED device exhibits a stable, voltage-independent blue/cyan emission with a record maximum luminescence of 350 cd m^-2, whereas the OLED device based on the rigid glass substrate shows a maximum luminescence of 700 cd m^-2. This work sets up a platform to develop next-generation OLED displays using CD emitters derived from the biowaste material.]]> Wed 04 Aug 2021 15:14:40 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42357 Wed 01 May 2024 16:22:39 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41883 −1 in the electrochemically doped state, whereas PTII-DT thin film prevents the macroscopic charge transport due to a large-scale crystalline disorientation. Upon evaluating both polymers as active conjugated materials in light-emitting electrochemical cells, they both exhibit emission under efficient electron/hole doping conditions.]]> Wed 01 May 2024 16:09:55 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41142 2 V⁻¹ s⁻¹, respectively. Most intriguingly, a clear charge-carrier-polarity change is observed when the devices are measured under vacuum. The pDPF-DTF2 polymer exhibits a balanced ambipolar performance with the µ_h/µ_e ratio of 1.9, whereas pDPSe-DTF2 exhibits p-type dominated charge carrier transport properties with the µ_h/µ_e ratio of 26.7. Such a charge carrier transport change is due to the strong electron-donating nature of the selenophene. Furthermore, pDPPy-DTF2 with electron-withdrawing pyridine flanking units demonstrates unipolar n-type charge transport properties with an electron mobility as high as 0.20 cm2 V⁻¹ s⁻¹. Overall, this study demonstrates a simple yet effective approach to switch the charge carrier polarity in transistors by varying the electron affinity of flanking groups of the diketopyrrolopyrrole unit.]]> Wed 01 May 2024 15:47:56 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34547 alt-naphthalene}):PC₇₁BM ([6,6]-phenyl C₇₁ butyric acid methyl ester) NP system and then compare the thermal stability of NP and BHJ films to the common poly(3-hexylthiophene) (P3HT): phenyl C₆₁ butyric acid methyl ester (PC₆₁BM) system. We find that material T_g plays a key role in the superior thermal stability of the PDPP-TNT:PC₇₁BM system; whereas for the P3HT:PC₆₁BM system, domain structure is critical.]]> Tue 26 Mar 2019 13:54:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47661 Tue 24 Jan 2023 15:33:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52538 Tue 17 Oct 2023 10:12:50 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49156 Tue 14 Nov 2023 11:41:55 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34418 −2 cm² V s⁻¹ whereas PBIBDF-TVT polymer exhibited 5.0 × 10⁻⁴ cm² V s⁻¹. The two orders of magnitude higher electron mobility of PBIBDF-TBT over PBIBDT-TVT is a clear indicator of the better charge transport ability of this polymer semiconductor arising from its higher crystallinity and better donor–acceptor interaction.]]> Tue 03 Sep 2019 18:23:10 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51327 Thu 31 Aug 2023 14:35:28 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47436 Thu 19 Jan 2023 17:01:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43296 Thu 15 Sep 2022 12:51:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40482 Thu 14 Jul 2022 08:46:09 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44455 Thu 13 Oct 2022 15:15:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38568 2O4, CoFe₂O₄ and Fe_3,O₄) coated with PEG for MNF formulation and evaluated the loading/release efficacy of doxorubicin (DOX), an anticancer drug. We have presented in detail the drug loading capacity and the time-dependent cumulative drug release of DOX from PEG-coated MNPs based MNFs. Specifically, we have selected three different MNPs (NiFe₂O₄, CoFe₂O₄ and Fe₃O₄) coated with PEG for the MNFs and compared their variance in the loading/release efficacy of DOX, through experimental results fitting into mathematical models. DOX loading takes the order in the MNFs as CoFe₂O₄ > NiFe₂O₄ > Fe₃O₄. Various drug release models were suggested and evaluated for the individual MNP based NFs. While the non-Fickian diffusion (anomalous) model fits for DOX release from PEG coated CoFe₂O₄, PEG coated NiFe₂O₄ NF follows zero-order kinetics with a slow drug release rate of 1.33% of DOX per minute. On the other hand, PEG coated NiFe₂O₄ follows zero-order DOX release. Besides, several thermophysical properties and magnetic susceptibility of the MNFs of different concentrations have been studied by dispersing the MNPs (NiFe₂O₄, CoFe₂O₄ and Fe₃O₄) in the base fluid at 300 K under ultrasonication. This report on the DOX loading/release capability of MNF will set a new paradigm in view that MNF can resolve problems related to the self-heating of drug carriers during mild laser treatment with its thermal conducting properties.]]> Thu 04 Nov 2021 13:58:14 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40144 Thu 02 Nov 2023 13:44:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18538 Sat 24 Mar 2018 07:50:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30009 −2 and the power efficiency of 1.5 lm W⁻¹ while that of PY-PH exhibited 2116 cd m⁻² and 0.45 lm W⁻¹ respectively.]]> Sat 24 Mar 2018 07:28:50 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49713 500 programming and erasing cycles. Overall, this study demonstrates a charge carrier polarity change in OFETs fabricated with DPP-based dual-acceptor copolymers by incorporating various acceptors into the polymer backbone and reports a high-performance nonvolatile ambipolar flash memory.]]> Mon 29 May 2023 14:17:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39296 Mon 29 Jan 2024 18:47:28 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53890 Mon 29 Jan 2024 18:26:14 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53177 Mon 29 Jan 2024 18:20:39 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48493 Mon 29 Jan 2024 18:00:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50335 Mon 29 Jan 2024 18:00:39 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39958 L-F) has been designed and synthesized starting from a low-cost pyrene core functionalized with triphenilamine substituents at 1,3,6,8 positions (L-H), obtained via Suzuki coupling reactions. Its performance when used as green emitter in organic light emitting diodes (OLEDs) or as dopant-free hole-transporting material (HTM) in halide perovskite solar cells (PSCs) is higher than that of the L-H counterpart, in spite of its lower bulk hole-mobility (7.0 x 10⁻⁶ cm²/V) to L-H (1.9 x 10⁻⁴ cm²/V). In fact, the OLED devices based on a L-F active layer showed excellent green emission (brightness and current efficiency were 1759.8 cd/m² and 3.7 cd/A, respectively) at a 4.5 V turn-on voltage. When the molecules were employed as a dopant-free HTM in PSCs, L-F led to a power conversion efficiency (PCE) and open circuit voltage (V_oc) of 5.9% and 1.07 V, respectively, thus outperforming those of corresponding devices based on L-H (PCE = 5.0% and V_oc = 0.87 V) under similar experimental conditions (AM 1.5G and 100 mW cm²). We attribute the enhancements of L-F-based optoelectronic devices (OLEDs and PSCs) to the observed better quality of the L-F films. The promising performance of L-F indicates that fluorination of small molecules can be an effective strategy to achieve low-cost and high-performing materials for energy harvesting and display-based organic electronic devices.]]> Mon 29 Jan 2024 17:53:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48833 Mon 10 Apr 2023 10:43:09 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39338 Fri 25 Aug 2023 10:12:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38284 Fri 20 Aug 2021 16:35:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37073 b:6,5-b′]dithiophene (TPA-NADT-TPA), 4,4′-(anthracene-2,6-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (TPA-ANR-TPA) and N²,N²,N⁶,N⁶-tetrakis(4-methoxyphenyl)anthracene-2,6-diamine (DPA-ANR-DPA), are designed and synthesized for use in organic light-emitting diodes (OLEDs) and perovskite solar cells (PSCs). In OLEDs, devices based on TPA-NADT-TPA, TPA-ANR-TPA and DPA-ANR-DPA showed pure blue, blue green, and green emission, respectively. Also, the maximum brightness of the devices with a turn-on voltage of 3.8 V reached 8682 cd m⁻² for TPA-NADT-TPA, 11 180 cd m⁻² for TPA-ANR-TPA, and 18 600 cd m⁻² for DPA-ANR-DPA. These new materials are also employed as hole transporting materials (HTMs) in inverted PSCs, where they were used without additives. The inverted devices based on these HTMs achieved an overall efficiency of 10.27% for TPA-NADT-TPA, 7.54% for TPA-ANR-TPA, and 6.05% for DPA-ANR-DPA under identical conditions (AM 1.5G and 100 mW cm⁻²). While the PSCs with TPA-NADT-TPA as the HTM achieved the highest efficiency, the DPA-ANR-DPA-based OLED devices showed the brightest emission and efficiency. Based on the obtained promising performance, it is clear that this molecular design presents a new research strategy to develop materials that can be used in multiple types of devices.]]> Fri 14 Aug 2020 13:34:14 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36858 Fri 10 Jul 2020 19:14:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47944 Fri 10 Feb 2023 15:10:53 AEDT ]]>