Molecular miscible blend of poly(2-cyano-1,4-phenyleneterephthalamide) and polyvinylpyrrolidone characterized by two-dimensional correlation FTIR and solid state 13C NMR spectroscopy

Visualising substrate–fingermark interactions: Solid-state NMR spectroscopy of amino acid reagent development on cellulose substrates

“…Similar deshielding effects of C4 0 and C6 0 were observed in the isatin and DFO samples, although, in both cases, very weak interactions between the reaction products and other cellulosic groups were observed. In particular, the C4 0 and C6 0 carbons from the second I b cellulose chain exhibited the greatest downfield shifts coupled with a dramatic increase in relative intensity, due to localised electron withdrawal and assisted dipolar coupling (hence improved cross-polarisation signal intensity) of these carbon atoms [34,35]. Each of these downfield migrations corresponded to previously reported chemical shift values for cellulose I b [25,27,28].…”

Two-dimensional correlation spectroscopy — Biannual survey 2007–2009

“…It was found that theophylline interacts with acrylic acid moiety preferentially in the form of a stable cyclic hydrogen-bonded structure. Oh et al [248] used 2D IR for the composition dependence of blends of poly(2-cyano-1,4-phenyleneterephthalimide) and polyvinylpyrrolidone to show the existence of intermolecular hydrogen-bonding interactions.…”

“…Oh et al [248] used 2D IR to probe intermolecular hydrogenbonding interactions of blends of poly(2-cyano-1,4-phenyleneterephthalimide) and polyvinylpyrrolidone. Sun et al [170] studied thermal behavior of poly(N-isopropylacrylamide) in D 2 O around LCST during the heating and cooling cycles.…”

Two-dimensional correlation spectroscopy in polymer study

“…The generalized 2DCOS can elucidate information in spectral variations, e.g., IR (Kim et al, 2006b; Cerdà-Costa et al, 2009; Huang et al, 2009; Unger et al, 2009, 2011; Del Río et al, 2010; Huang and Kuo, 2010; Jelèić et al, 2010; Jia et al, 2010; Lee et al, 2010, 2012; Peng et al, 2010; Popescu and Vasile, 2010, 2011; Zheng et al, 2010; Cheng et al, 2011; Jin et al, 2011; Kuo and Liu, 2011; Musto et al, 2011; Quaroni et al, 2011; Wang and Wu, 2011; Zhang et al, 2011; Ando et al, 2012; Qu et al, 2012; Su et al, 2012; Wu et al, 2012; Chai et al, 2013; Lai and Wu, 2013; Park et al, 2013; Shinzawa et al, 2013; Wang et al, 2013, 2014; Galizia et al, 2014; Hou et al, 2014; Noda, 2014c; Seo et al, 2014), Raman (Radice et al, 2010; Tang et al, 2010; Ma et al, 2011; Ji et al, 2012; Pazderka and Kopecký Jr, 2012; Brewster et al, 2013; Grzeszczuk et al, 2013; Noda, 2014d), terahertz (THz) (Hoshina et al, 2012, 2014), X-ray (Guo et al, 2011), UV-Vis (Hong et al, 2005; Jiang and Wu, 2008; Sikirzhytski et al, 2012; Zhong et al, 2012), NMR (Oh et al, 2009; Li et al, 2013), fluorescence (Hur et al, 2011; Zhang et al, 2013), and even chromatography (Izawa et al, 2001), under various external perturbations, such as thermal, electrical, optical, magnetic, and chemical perturbations (Noda, 1986, 1993; Hong et al, 2005; Kim et al, 2006b; Jiang and Wu, 2008; Cerdà-Costa et al, 2009; Huang et al, 2009; Oh et al, 2009; Unger et al, 2009; Del Río et al, 2010; Huang and Kuo, 2010; Jelèić et al, 2010; Jia et al, 2010; Lee et al, …”

“…The most popularly applied external perturbation in 2DCOS is temperature (Kim et al, 2006b; Unger et al, 2009, 2011; Jia et al, 2010; Peng et al, 2010; Popescu and Vasile, 2010; Tang et al, 2010; Zheng et al, 2010; Cheng et al, 2011; Wang and Wu, 2011; Pazderka and Kopecký Jr, 2012; Chai et al, 2013; Li et al, 2013; Wang et al, 2013, 2014; Hoshina et al, 2014; Hou et al, 2014; Seo et al, 2014). Applications of 2DCOS in investigations of intriguing properties of polymer system measured by different types of analytical probes has been substantially increased (Izawa et al, 2001; Hong et al, 2005; Kim et al, 2006b; Jiang and Wu, 2008; Huang et al, 2009; Oh et al, 2009; Unger et al, 2009, 2011; Del Río et al, 2010; Huang and Kuo, 2010; Jelèić et al, 2010; Jia et al, 2010; Lee et al, 2010, 2012; Peng et al, 2010; Popescu and Vasile, 2010, 2011; Radice et al, 2010; Tang et al, 2010; Zheng et al, 2010; Cheng et al, 2011; Guo et al, 2011; Jin et al, 2011; Kuo and Liu, 2011; Ma et al, 2011; Wang and Wu, 2011; Zhang et al, 2011; Ando et al, 2012; Hoshina et al, 2012, 2014; Qu et al, 2012; Su et al, 2012; Wu et al, 2012; Zhong et al, 2012; Chai et al, 2013; Grzeszczuk et al, 2013; Lai and Wu, 2013; Park et al, 2013; Shinzawa et al, 2013; Wang et al, 2013, 2014; Hou et al, 2014; Noda, 2014c,d; Seo et al, 2014). Generalized 2D correlation spectra has notable advantages: examination of inter- or intra-molecular interactions and determination of the sequential order of events, which is hardly depicted in conventional spectroscopy.…”